Channel Plus 8052 Spezifikationen

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MicroConverter
®
Multichannel
24-/16-Bit ADCs with Embedded 62 kB
Flash and Single-Cycle MCU
Data Sheet
ADuC845/ADuC847/ADuC848
Rev. C Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©20042012 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
High resolution Σ-Δ ADCs
2 independent 24-bit ADCs on the ADuC845
Single 24-bit ADC on the ADuC847 and
single 16-bit ADC on the ADuC848
Up to 10 ADC input channels on all parts
24-bit no missing codes
22-bit rms (19.5 bit p-p) effective resolution
Offset drift 10 nV/°C, gain drift 0.5 ppm/°C chop enabled
Memory
62-kbyte on-chip Flash/EE program memory
4-kbyte on-chip Flash/EE data memory
Flash/EE, 100-year retention, 100 kcycle endurance
3 levels of Flash/EE program memory security
In-circuit serial download (no external hardware)
High speed user download (5 sec)
2304 bytes on-chip data RAM
8051-based core
8051-compatible instruction set
High performance single-cycle core
32 kHz external crystal
On-chip programmable PLL (12.58 MHz max)
3 × 16-bit timer/counter
24 programmable I/O lines, plus 8 analog or
digital input lines
11 interrupt sources, two priority levels
Dual data pointer, extended 11-bit stack pointer
On-chip peripherals
Internal power-on reset circuit
12-bit voltage output DAC
Dual 16-bit Σ-Δ DACs
On-chip temperature sensor (ADuC845 only)
Dual excitation current sources (200 µA)
Time interval counter (wake-up/RTC timer)
UART, SPI®, and I
2
serial I/O
High speed dedicated baud rate generator (incl. 115,200)
Watchdog timer (WDT)
Power supply monitor (PSM)
Power
Normal: 4.8 mA max @ 3.6 V (core CLK = 1.57 MHz)
Power-down: 20 µA max with wake-up timer running
Specified for 3 V and 5 V operation
Package and temperature range:
52-lead MQFP (14 mm × 14 mm),40°C to +125°C
56-le
ad LFCSP (8 mm × 8 mm), 40°C to +85°C
APPLICATIONS
Multichannel sensor monitoring
Industrial/environmental instrumentation
Weigh scales, pressure sensors, temperature monitoring
Portable instrumentation, battery-powered systems
Data logging, precision system monitoring
FUNCTIONAL BLOCK DIAGRAM
62 kBYTES FLASH/EE PROGRAM MEMORY
4 kBYTES FLASH/EE DATA MEMORY
2304 BYTES USER RAM
3 × 16 BIT TIMERS
BAUD RATE TIMER
4 × PARALLEL
PORTS
SINGLE-CYCLE 8061-BASED MCU
ADuC845
TEMP
SENSOR
CURRENT
SOURCE
AIN1
AIN10
AINCOM
RESET
DV
DD
DGND
WAKE-UP/
RTC TIMER
IEXC1
IEXC2
PWM0
PGA
BUF
MUX
AUXILIARY
24-BIT S-D ADC
PRIMARY
24-BIT S-D ADC
DAC
BUF
PWM1
12-BIT
DAC
AV
DD
DUAL 16-BIT
S-D DAC
DUAL 16-BIT
PWM
POWER SUPPLY MON
WATCHDOG TIMER
UART, SPI, AND I
2
C
SERIAL I/O
MUX
04741-001
XTAL2XTAL1
OSC
AVCO
AGND
PLL AND PRG
CLOCK DIV
POR
REFIN+
REFIN–
REFIN2–
REFIN2+
EXTERNAL
V
REF
DETECT
INTERNAL
BAND GAP
V
REF
Figure 1. ADuC845 Functional Block Diagram
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Inhaltsverzeichnis

Seite 1 - ADuC845/ADuC847/ADuC848

MicroConverter® Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU Data Sheet ADuC845/ADuC847/ADuC848 Rev. C Documen

Seite 2 - TABLE OF CONTENTS

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 10 of 108 ABOSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 2. Parameter Rating

Seite 3 - REVISION HISTORY

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 100 of 108 Table 69. SPI MASTER MODE TIMING (CPHA = 0) Parameter Min Typ Max Unit tSL

Seite 4 - SPECIFICATIONS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 101 of 108 Table 70. SPI SLAVE MODE TIMING (CPHA = 1) Parameter Min Typ Max Unit tSS

Seite 5 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 102 of 108 Table 71. SPI SLAVE MODE TIMING (CPHA = 0) Parameter Min Typ Max Unit tSS SS to SCL

Seite 6 - 1.25 − 1%

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 103 of 108 Table 72. UART TIMING (SHIFT REGISTER MODE) Parameter 12.58 MHz Core_Clk Variable Cor

Seite 7 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 104 of 108 OUTLINE DIMENSIONS COMPLIANT TO JEDEC STANDARDS MO-112-AC-1SEATINGPLANEVIEW A2.45MAX1.03

Seite 8 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 105 of 108 ORDERING GUIDE Model1, 2, 3 Temperature Range Package Description Package Option ADu

Seite 9

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 106 of 108 NOTES

Seite 10 - ABOSOLUTE MAXIMUM RATINGS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 107 of 108 NOTES

Seite 11 - Footnotes at end of table

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 108 of 108 NOTES Purchase of licensed I2C components of Analog Device

Seite 12 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 11 of 108 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 52 51 50 49 48 43 42 41 4047 46 45 4414 15 1

Seite 13 - 22, 36, 51

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 12 of 108 Pin No: 52-MQFP Pin No: 56-LFCSP Mnemonic Type1 Description 9 9 P1.4/AIN5 I On pow

Seite 14 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 13 of 108 Pin No: 52-MQFP Pin No: 56-LFCSP Mnemonic Type1 Description 20, 34, 48 22, 36, 51 DVDD

Seite 15 - GENERAL DESCRIPTION

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 14 of 108 Pin No: 52-MQFP Pin No: 56-LFCSP Mnemonic Type1 Description 43–46, 49–52 46–49, 52–55

Seite 16 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 15 of 108 GENERAL DESCRIPTION The ADuC845, ADuC847, and ADuC848 are single-cycle, 12.58 MIPs, 8052

Seite 17 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 16 of 108 WATCHDOGTIMER2304 BYTESUSER RAMPOWER SUPPLYMONITORTEMPSENSOR200A200ABAND GAPREFERENCEVRE

Seite 18 - EXTERNAL MEMORY ACCESS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 17 of 108 WATCHDOGTIMER2304 BYTESUSER RAMPOWER SUPPLYMONITOR200A200ABAND GAPREFERENCEVREFDETECTAVD

Seite 19 - COMPLETE SFR MAP

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 18 of 108 WATCHDOGTIMER2304 BYTESUSER RAMPOWER SUPPLYMONITOR200µA200µABAND GAPREFERENCEVREFDETECTAV

Seite 20 - FUNCTIONAL DESCRIPTION

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 19 of 108 COMPLETE SFR MAP RESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVEDRESERVED

Seite 21 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 2 of 108 TABLE OF CONTENTS Specifications ...

Seite 22 - MEMORY ORGANIZATION

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 20 of 108 FUNCTIONAL DESCRIPTION 8051 INSTRUCTION SET Table 4. Optimized Single-Cycle 8051 Instruct

Seite 23 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 21 of 108 Mnemonic Description Bytes Cycles1 RLC A Rotate A left through carry 1 1 RR A Rota

Seite 24 - Figure 11. Programming Model

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 22 of 108 Mnemonic Description Bytes Cycles1 SJMP rel Short jump (relative address) 2 3 JC re

Seite 25 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 23 of 108 1110010007H0FH17H1FH2FH7FH00H08H10H18H20HRESET VALUE OFSTACK POINTER30HFOUR BANKS OF EIGH

Seite 26 - ADC CIRCUIT INFORMATION

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 24 of 108 SPECIAL FUNCTION REGISTERS (SFRs) The SFR space is mapped into the upper 128 bytes of int

Seite 27 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 25 of 108 Power Control Register (PCON) The PCON SFR contains bits for power-saving options and gen

Seite 28 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 26 of 108 ADC CIRCUIT INFORMATION The ADuC845 incorporates two 10-channel (8-channel on the MQFP pa

Seite 29 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 27 of 108 Signal Chain Overview (Chop Enabled, CHOP = 0) With the CHOP bit = 0 (see the ADCMODE SFR

Seite 30 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 28 of 108 This offset is removed by performing a running average of 2. This average by 2 means that

Seite 31 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 29 of 108 ADC Noise Performance with Chop Enabled (CHOP = 0) Table 10, Table 11, Table 12, and Tabl

Seite 32 - BURNOUT CURRENT SOURCES

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 3 of 108 Power-On Reset Operation ... 88 Power

Seite 33 - DIGITAL FILTER

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 30 of 108 Signal Chain Overview with Chop Disabled (CHOP = 1) With CHOP = 1, chop is disabled and t

Seite 34 - CALIBRATION

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 31 of 108 ADC Noise Performance with Chop Disabled (CHOP = 1) Table 14, Table 15, Table 16, and Tab

Seite 35 - PROGRAMMABLE GAIN AMPLIFIER

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 32 of 108 AUXILIARY ADC (ADUC845 ONLY ) Table 18. ADuC845 Typical Output RMS Noise (µV) vs. Update

Seite 36 - ADC POWER-ON

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 33 of 108 of the input voltage on the analog input channel can be taken. When the resulting voltage

Seite 37

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 34 of 108 enabled for any SF word that yields an ADC throughput that is less than 20 Hz with chop e

Seite 38 - AMPLITUDE (dB)

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 35 of 108 Therefore, the full-scale endpoint calibration automatically subtracts the offset calibra

Seite 39

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 36 of 108 DATA OUTPUT CODING When the primary ADC is configured for unipolar operation, the output

Seite 40 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 37 of 108 TYPICAL PERFORMANCE CHARACTERISTICS –120–110–100–80–70–50–40–20–10–90–30–6000 10 20 30 4

Seite 41 - ADCMODE (ADC MODE REGISTER)

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 38 of 108 –120–100–80–40–20–60010095908575708065605550404535302520101550FREQUENCY (Hz)AMPLITUDE (dB

Seite 42 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 39 of 108 FUNCTIONAL DESCRIPTION ADC SFR INTERFACE The ADCs are controlled and configured via a num

Seite 43 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 4 of 108 SPECIFICATIONS1 AVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, DVDD = 2.7 V to 3.6 V or 4.75 V

Seite 44 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 40 of 108 ADCSTAT (ADC STATUS REGISTER) This SFR reflects the status of both ADCs including data re

Seite 45

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 41 of 108 ADCMODE (ADC MODE REGISTER) Used to control the operational mode of both ADCs. SFR Addre

Seite 46 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 42 of 108 Notes on the ADCMODE Register • Any change to the MD bits immediately resets both ADCs (

Seite 47 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 43 of 108 ADC0CON1 (PRIMARY ADC CONTROL REGISTER) ADC0CON1 is used to configure the primary ADC for

Seite 48 - 04741-026

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 44 of 108 ADC0CON2 (PRIMARY ADC CHANNEL SELECT REGISTER) ADC0CON2 is used to select a reference so

Seite 49 - 100 YEARS MIN

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 45 of 108 ADC1CON (AUXILIARY ADC CONTROL REGISTER) (ADuC845 ONLY) ADC1CON is used to configure the

Seite 50 - USER DOWNLOAD MODE (ULOAD)

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 46 of 108 SF (ADC SINC FILTER CONTROL REGISTER) The SF register is used to configure the decimation

Seite 51 - USING FLASH/EE DATA MEMORY

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 47 of 108 ICON (EXCITATION CURRENT SOURCES CONTROL REGISTER) The ICON register is used to configure

Seite 52 - FLASH/EE MEMORY TIMING

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 48 of 108 NONVOLATILE FLASH/EE MEMORY OVERVIEW The ADuC845/ADuC847/ADuC848 incorporate Flash/EE mem

Seite 53 - DAC CIRCUIT INFORMATION

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 49 of 108 40 60 70 90TJ JUNCTION TEMPERATURE (C)RETENTION(Years)25020015010050050 80 110300100ADI S

Seite 54 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 5 of 108 Parameter Min Typ Max Unit Conditions Normal Mode Rejection 50 Hz/60 Hz2 On

Seite 55 - PULSE-WIDTH MODULATOR (PWM)

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 50 of 108 USER DOWNLOAD MODE (ULOAD) Figure 28 shows that it is possible to use the 62 kbytes of Fla

Seite 56 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 51 of 108 USING FLASH/EE DATA MEMORY The 4 kbytes of Flash/EE data memory are configured as 1024 pag

Seite 57 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 52 of 108 Example: Programming the Flash/EE Data Memory A user wants to program F3H into the second

Seite 58 - Figure 42. PWM Mode 4

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 53 of 108 DAC CIRCUIT INFORMATION The ADuC845/ADuC847/ADuC848 incorporate a 12-bit, voltage output

Seite 59 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 54 of 108 Using the DAC The on-chip DAC architecture consists of a resistor string DAC followed by a

Seite 60 - ON-CHIP PLL (PLLCON)

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 55 of 108 SOURCE/SINK CURRENT (mA)30 5 10 15OUTPUT VOLTAGE (V)210DAC LOADED WITH 0000HDAC LOADED WIT

Seite 61 - C SERIAL INTERFACE

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 56 of 108 PWMCON PWM Control SFR SFR Address: AEH Power-On Default: 00H Bit Addressable: N

Seite 62 - C System

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 57 of 108 PWM Cycle Width High Byte (PWM1H) SFR Address: B4H Power-On Default: 00H Bit Addressa

Seite 63 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 58 of 108 Mode 3 (Twin 16-Bit PWM) In Mode 3, the PWM counter is fixed to count from 0 to 65536, gi

Seite 64 - SPI SERIAL INTERFACE

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 59 of 108 Mode 5 (Dual 8-Bit PWM) In Mode 5, the duty cycle and the resolution of the PWM outputs a

Seite 65 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 6 of 108 Parameter Min Typ Max Unit Conditions AUXILIARY ADC ANALOG INPUTS (ADuC845 Only)

Seite 66 - USING THE SPI INTERFACE

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 60 of 108 ON-CHIP PLL (PLLCON) The ADuC845/ADuC847/ADuC848 are intended for use with a 32.768 kHz w

Seite 67 - DUAL DATA POINTERS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 61 of 108 I2C SERIAL INTERFACE The ADuC845/ADuC847/ADuC848 support a fully licensed I2C serial inte

Seite 68 - POWER SUPPLY MONITOR

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 62 of 108 I2CADD—I2C Address Register 1 Function: Holds one of the I2C peripheral addresses for th

Seite 69 - WATCHDOG TIMER

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 63 of 108 Hardware Slave Mode After reset, the ADuC845/ADuC847/ADuC848 default to hardware slave mo

Seite 70 - TIME INTERVAL COUNTER (TIC)

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 64 of 108 SPI SERIAL INTERFACE The ADuC845/ADuC847/ADuC848 integrate a complete hardware serial per

Seite 71 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 65 of 108 SPICON—SPI Control Register SFR Address: F8H Power-On Default: 05H Bit Addressable:

Seite 72 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 66 of 108 USING THE SPI INTERFACE Depending on the configuration of the bits in the SPICON SFR sh

Seite 73 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 67 of 108 DUAL DATA POINTERS The parts incorporate two data pointers. The second data pointer is a

Seite 74 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 68 of 108 POWER SUPPLY MONITOR The power supply monitor, once enabled, monitors the DVDD and AVDD s

Seite 75 - TIMERS/COUNTERS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 69 of 108 WATCHDOG TIMER The watchdog timer generates a device reset or interrupt within a reasonab

Seite 76

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 7 of 108 Parameter Min Typ Max Unit Conditions TRANSDUCER BURNOUT CURRENT SOURCES AIN

Seite 77 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 70 of 108 TIME INTERVAL COUNTER (TIC) A TIC is provided on-chip for counting longer intervals than

Seite 78 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 71 of 108 TIMECON—TIC Control Register SFR Address: A1H Power-On Default: 00H Bit Addressable:

Seite 79 - X X 0 Off

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 72 of 108 I N T VA L —User Timer Interval Select Register Function: User code writes the required t

Seite 80 - UART SERIAL INTERFACE

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 73 of 108 8052-COMPATIBLE ON-CHIP PERIPHERALS This section gives a brief overview of the various se

Seite 81 - 04741-056

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 74 of 108 P2.5 and P2.6 can also be used as PWM outputs, while P2.7 can act as an alternate PWM clo

Seite 82 - 2:26553616 −×

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 75 of 108 TIMERS/COUNTERS The ADuC845/ADuC847/ADuC848 have three 16-bit timer/ counters: Timer 0, T

Seite 83 - 04741-058

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 76 of 108 TCON—Timer/Counter 0 and 1 Control Register SFR Address: 88H Power-On Default: 00H Bi

Seite 84 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 77 of 108 Timer/Counter 0 and 1 Operating Modes This section describes the operating modes for Time

Seite 85 - INTERRUPT SYSTEM

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 78 of 108 T2CON—Timer/Counter 2 Control Register SFR Address: C8H Power-On Default: 00H Bit Add

Seite 86 - INTERRUPT VECTORS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 79 of 108 Timer/Counter 2 Operating Modes The following sections describe the operating modes for T

Seite 87 - POWER SUPPLIES

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 8 of 108 Parameter Min Typ Max Unit Conditions LOGIC OUTPUTS (All Digital Outputs except XTAL

Seite 88 - 04741-087

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 80 of 108 UART SERIAL INTERFACE The serial port is full duplex, meaning that it can transmit and re

Seite 89 - RECOMMENDATIONS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 81 of 108 Mode 0 (8-Bit Shift Register Mode) Mode 0 is selected by clearing both the SM0 and SM1 bit

Seite 90 - 04741-065

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 82 of 108 Mode 3 (9-Bit UART with Variable Baud Rate) Mode 3 is selected by setting both SM0 and SM

Seite 91 - LFCSP PACKAGE

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 83 of 108 Timer 3 Generated Baud Rates The high integer dividers in a UART block mean that high sp

Seite 92 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 84 of 108 T3FD—Timer 3 Fractional Divider Register See Table 57 for values. SFR Address: 9DH Po

Seite 93

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 85 of 108 INTERRUPT SYSTEM The ADuC845/ADuC847/ADuC848 provide nine interrupt sources with two prio

Seite 94 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 86 of 108 IEIP2—Secondary Interrupt Enable Register SFR Address: A9H Power-On Default: A0H Bit

Seite 95 - TIMING SPECIFICATIONS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 87 of 108 HARDWARE DESIGN CONSIDERATIONS This section outlines some of the key hardware design cons

Seite 96 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 88 of 108 as op amps and voltage reference) can be powered from the AVDD supply line as well. DVDDA

Seite 97 - Table 67. I

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 89 of 108 • Cycling Power All registers are set to their default state and program exe-cution star

Seite 98 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 9 of 108 Parameter Min Typ Max Unit Conditions PWM −Fxtal 3 µA −Fvco 0.5

Seite 99 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 90 of 108 DGNDAGNDPLACE ANALOGCOMPONENTSHEREPLACE DIGITALCOMPONENTSHEREGNDPLACE ANALOGCOMPONENTSHERE

Seite 100 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 91 of 108 C1+V+C1–C2+C2–V–T2OUTR2INVCCGNDT1OUTR1INR1OUTT1INT2INR2OUTADM3202RS-232 INTERFACE11234567

Seite 101 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 92 of 108 The serial port debugger is fully contained on the device, unlike ROM monitor type debugg

Seite 102 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 93 of 108 DVDD0.1µFRESET ACTIVE HIGH.(NORMALLY OPEN)353443441kΩDVDD1kΩ2-PIN HEADER FOREMULATION ACC

Seite 103 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 94 of 108 QuickStart DEVELOPMENT SYSTEM The QuickStart Development System is an entry-level, low co

Seite 104 - OUTLINE DIMENSIONS

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 95 of 108 TIMING SPECIFICATIONS AC inputs during testing are driven at DVDD – 0.5 V for Logic 1 and

Seite 105 - ORDERING GUIDE

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 96 of 108 Table 65. EXTERNAL DATA MEMORY READ CYCLE Parameter 12.58 MHz Core Clock 6.29 MHz Core

Seite 106 - Rev. C

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 97 of 108 Table 66. EXTERNAL DATA MEMORY WRITE CYCLE Parameter 12.58 MHz Core Clock 6.29 MHz Cor

Seite 107 - Rev. C

ADuC845/ADuC847/ADuC848 Data Sheet Rev. C | Page 98 of 108 MSBtBUFSDATA (I/O)SCLK (I)STOPCONDITIONSTARTCONDITIONREPEATEDSTARTLSB ACK MSB1 2-7 8 9

Seite 108 - D04741-0-12/

Data Sheet ADuC845/ADuC847/ADuC848 Rev. C | Page 99 of 108 Table 68. SPI MASTER MODE TIMING (CPHA = 1) Parameter Min Typ Max Unit tSL

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