p89cv51rb2 NXP Semiconductors, p89cv51rb2 Datasheet - Page 23

• Manufacturer Part Number: p89cv51rb2
• Description: P89cv51rb2/rc2/rd2 8-bit 80c51 5 V Low Power 64 Kb Flash Microcontroller With 1 Kb Ram, Spi, 6-clock Cpu With 6/12-clock Peripherals
• Manufacturer: NXP Semiconductors

NXP Semiconductors
P89CV51RB2_RC2_RD2_1
Product data sheet
Table 12.
IAP function
Erase 8 kB/16 kB code block
Program user code
Read user code
Erase status bit and boot vector
Program security bits
IAP function calls
Rev. 01 — 5 October 2007
…continued
IAP call parameters
Input parameters:
R1 = 01H or 81H (WDT feed)
DPH = 00H, block 0, 0 kB to 8 kB
DPH = 20H, block 1, 8 kB to 16 kB
DPH = 40H, block 2, 16 kB to 32 kB
DPH = 80H, block 3, 32 kB to 48 kB
DPH = C0H, block 4, 48 kB to 64 kB
Return parameter(s):
ACC = 00: pass
ACC is not 00: fail
Input parameters:
R1 = 02H or 82H (WDT feed)
DPH = memory address MSB
DPL = memory address LSB
ACC = byte to program
Return parameter(s):
ACC = 00: pass
ACC is not 00: fail
Input parameters:
R1 = 03H or 83H (WDT feed)
DPH = memory address MSB
DPL = memory address LSB
Return parameter(s):
ACC = device data
Input parameters:
R1 = 04H or 84H (WDT feed)
DPL = don’t care
DPH = don’t care
Return parameter(s):
ACC = 00: pass
ACC is not 00: fail
Input parameters:
R1 = 05H or 85H (WDT feed)
DPL = 00H = security bit 1
DPL = 01H = security bit 2
DPL = 02H = security bit 3
Return parameter(s):
ACC = 00: pass
ACC is not 00: fail
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
© NXP B.V. 2007. All rights reserved.
23 of 73