AT89C51RC2-3CSCM(2003) 데이터 시트보기 (PDF) - Atmel Corporation
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AT89C51RC2-3CSCM Datasheet PDF : 125 Pages
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4180B–8051–04/03
UART Registers.................................................................................................. 48
Interrupt System ................................................................................. 53
Registers............................................................................................................. 54
Interrupt Sources and Vector Addresses............................................................ 61
Keyboard Interface ............................................................................. 62
Registers............................................................................................................. 63
Serial Port Interface (SPI) ................................................................... 66
Features.............................................................................................................. 66
Signal Description............................................................................................... 66
Functional Description ........................................................................................ 68
Hardware Watchdog Timer ................................................................ 75
Using the WDT ................................................................................................... 75
WDT During Power-down and Idle ..................................................................... 76
ONCE™ Mode (ON Chip Emulation) .................................................. 77
Power Management ............................................................................ 78
Reset .................................................................................................................. 78
Reset Recommendation to Prevent Flash Corruption ........................................ 80
Idle Mode ............................................................................................................ 80
Power-down Mode.............................................................................................. 80
Power-off Flag ..................................................................................... 82
Reduced EMI Mode ............................................................................. 83
Flash EEPROM Memory ..................................................................... 84
Features.............................................................................................................. 84
Flash Programming and Erasure........................................................................ 84
Flash Registers and Memory Map...................................................................... 85
Flash Memory Status.......................................................................................... 88
Memory Organization ......................................................................................... 88
Bootloader Architecture ...................................................................................... 89
ISP Protocol Description..................................................................................... 93
Functional Description ........................................................................................ 94
Flow Description ................................................................................................. 95
API Call Description.......................................................................................... 103
Electrical Characteristics ................................................................. 105
Absolute Maximum Ratings ..............................................................................105
DC Parameters for Standard Voltage ............................................................... 105
DC Parameters for Low Voltage ....................................................................... 107
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