89C51IC2-CM ATMEL [ATMEL Corporation], 89C51IC2-CM Datasheet - Page 143
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89C51IC2-CM
Manufacturer Part Number
89C51IC2-CM
Description
8-bit Flash Microcontroller with 2-wire Interface
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.89C51IC2-CM.pdf
(146 pages)
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4301A–8051–01/04
Features ................................................................................................. 1
Description ............................................................................................ 2
Block Diagram ....................................................................................... 3
SFR Mapping ......................................................................................... 4
Pin Configurations .............................................................................. 10
Oscillators ........................................................................................... 14
Enhanced Features ............................................................................. 21
Dual Data Pointer Register ................................................................ 25
Expanded RAM (XRAM) ..................................................................... 27
Timer 2 ................................................................................................. 30
Programmable Counter Array PCA ................................................... 35
Serial I/O Port ...................................................................................... 47
Interrupt System ................................................................................. 58
Overview............................................................................................................. 14
Registers............................................................................................................. 14
Functional Block Diagram................................................................................... 17
Operating Modes ................................................................................................ 17
Design Considerations........................................................................................ 19
Timer 0: Clock Inputs.......................................................................................... 20
X2 Feature and OSCA Clock Generation ........................................................... 21
Auto-Reload Mode.............................................................................................. 30
Programmable Clock-Output .............................................................................. 31
PCA Capture Mode............................................................................................. 43
16-bit Software Timer/ Compare Mode............................................................... 43
High Speed Output Mode ................................................................................... 44
Pulse Width Modulator Mode.............................................................................. 45
PCA Watchdog Timer ......................................................................................... 46
Framing Error Detection ..................................................................................... 47
Automatic Address Recognition.......................................................................... 48
Baud Rate Selection for UART for mode 1 and 3............................................... 50
UART Registers.................................................................................................. 54
Registers............................................................................................................. 59
Interrupt Sources and Vector Addresses............................................................ 66
AT89C51IC2
i
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