AT89C51RC2 Atmel Corporation, AT89C51RC2 Datasheet - Page 106

• Manufacturer Part Number: AT89C51RC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RC2

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 1.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Table 74. API Call Summary (Continued)
106
READ BOOT VERSION
PROGRAM X2 FUSE
PROGRAM BLJB
READ BOOT ID1
READ BOOT ID2
READ HSB
Command
FUSE
AT89C51RB2/RC2
0Ah
0Ah
0Bh
0Eh
0Eh
R1
0Fh
Fuse value
Fuse value
00h or 01h
00h or 01h
XXh
XXh
XXh
XXh
A
DPL = 00h
DPL = 01h
DPTR0
XXXXh
XXXXh
0008h
0004h
DPTR1
XXh
XXh
XXh
XXh
XXh
XXh
ACC = Boot_Version
Returned Value
ACC = HSB
ACC = ID1
ACC = ID2
none
none
Program BLJB fuse bit with ACC
Program X2 fuse bit with ACC
Read bootloader version
Read Hardware Byte
Command Effect
Read boot ID1
Read boot ID2
4180E–8051–10/06