Rainbow Electronics AT89C5131 - Manual (Page 49)

49
AT89C5131
4136A–USB–03/03
READ copy of the MANUFACTURER ID Input Parameters:
R0 = osc freq (integer Not required, left for Philips
compatibility)
R1 = 00h
DPH = 00h
DPL = 00h (manufacturer ID)
Return Parameter
ACC = value of byte read
READ copy of the device ID # 1 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
READ copy of the device ID # 2 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
READ copy of the device ID # 3 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
READ SOFTWARE SECURITY BITS 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
READ HARDWARE SECURITY BITS Input Parameters:
R0 = osc freq (integer Not required, left for Philips
compatibility)
R1 = 07h
DPH = 00h
DPL = 04h (Hardware security bits)
Return Parameter
ACC = value of byte read
Table 41. API Calls (Continued)
API Call Parameter