AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 111

• Manufacturer Part Number: AT89C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RD2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 2
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Table 24-9.
4235K–8051–05/08
Command
03h
04h
05h
07h
ISP Commands Summary (Continued)
Program EEPROM data
Command Name
Display Function
Write Function
Read Function
Data[4] = 02h: Display EEPROM
Data[0]
Data[4] = 00h:Display Code
Data[4] = 01h: Blank check
0Ah
0Bh
0Eh
0Fh
01h
03h
04h
05h
06h
07h
00h
07h
Data[0:1] = start address
Data [2:3] = end address
Data[1]
C0h
00h
20h
40h
80h
00h
00h
00h
01h
00h
01h
04h
08h
00h
01h
02h
03h
00h
01h
02h
06h
00h
00h
01h
00h
-
Full Chip Erase (This command needs about 6 sec to be
Bootloader will accept up to 128 (80h) data bytes.
Program BLJB fuse (value to write in data[2])
Program X2 fuse (value to write in data[2])
Program BSB (value to write in data[2])
Program SBV (value to write in data[2])
Program Nn EEprom Data Byte.
Erase block4 (C000h- FFFFh)
Erase block3 (8000h- BFFFh)
Erase block0 (0000h-1FFFh)
Erase block1 (2000h-3FFFh)
Erase block2 (4000h-7FFFh)
Read Bootloader Version
AT89C51RD2/ED2
Display EEPROM data
Read Device Boot ID1
Read Device Boot ID2
Program SSB level 1
Program SSB level 2
Read Hardware Byte
Erase SBV & BSB
Command Effect
Hardware Reset
Read Extra Byte
Manufacturer Id
Display Code
Blank Check
Device Id #1
Device Id #2
Device Id #3
Read SSB
Read BSB
Read SBV
executed)
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