T89C51RD2 ATMEL Corporation, T89C51RD2 Datasheet - Page 63

• Manufacturer Part Number: T89C51RD2
• Description: 0 to 40MHz Flash Programmable 8-bit Microcontroller
• Manufacturer: ATMEL Corporation

T89C51RD2
63
READ copy of the device
ID # 1
READ copy of the device
ID # 2
READ copy of the device
ID # 3
READ SOFTWARE
SECURITY BITS
READ copy of the
HARDWARE SECURITY
BITS
READ BOOT VECTOR
READ BOOTLOADER
VERSION
READ BOOT STATUS
BYTE
API call
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 00h
DPH = 00h
DPL = 01h (device ID # 1)
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 00h
DPH = 00h
DPL = 02h (device ID # 2)
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 00h
DPH = 00h
DPL = 03h (device ID # 2)
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 07h
DPH = 00h
DPL = 00h (Software security bits)
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 07h
DPH = 00h
DPL = 03h (Hardtware security bits)
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 07h
DPH = 00h
DPL = 02h (boot vector)
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 08h
Return Parameter
ACC = value of byte read
Input Parameters:
R0 = osc freq (integer Not required, left for Philips compatibility)
R1 = 07h
DPH = 00h
DPL = 01h (status byte)
Return Parameter
ACC = value of byte read
Table 33. API calls
Parameter
Rev. F - 15 February, 2001