參數資料
型號: P89C662
廠商: NXP Semiconductors N.V.
英文描述: 80C51 8-Bit Flash Microcontroller 32KB ISP/IAP FLASH with 1KB RAM(80C51 8位閃速微控制器,帶16KB ISP/IAP閃速存儲器和1KB RAM)
中文描述: 80C51的8位閃存微控制器具有32KB的ISP /聯(lián)合會與1kB的內存(80C51的8位閃速微控制器,帶16KB的供應商/聯(lián)合會閃速存儲器和閃存的1kB的RAM)
文件頁數: 70/89頁
文件大小: 490K
代理商: P89C662
Philips Semiconductors
Product data
P89C660/P89C662/P89C664/
P89C668
80C51 8-bit Flash microcontroller family
16KB/32KB/64KB ISP/IAP Flash with 512B/1KB/2KB/8KB RAM
2002 Oct 28
70
IAP CALL
PARAMETER
ERASE BOOT VECTOR &
STATUS BYTE
Input Parameters:
R0 = osc freq (integer)
R1 = 04h
R1 = 84h (WDT feed, Rx2 & 66x only)
DPH = 00h
DPL = don’t care
Return Parameter
none
Sample routine:
;***** Erase Boot Vector (BV) & Status Byte (SB) *****
;***** Note: This command erases BOTH the SB & BV
ERSBBV;
MOV
MOV
MOV
MOV
CALL
RET
AUXR1,#20H
R0, #11
R1,#04H
DPH,#00h
PGM_MTP
;set the ENBOOT bit
;FOSC
;erase status byte & boot vector
;we don’t care about DPL
;execute the function
PROGRAM SECURITY BIT
Input Parameters:
R0 = osc freq (integer)
R1 = 05h
R1 = 85h (WDT feed, Rx2 & 66x only)
DPH = 00h
DPL = 00h – security bit # 1 (inhibit writing to Flash)
01h – security bit # 2 (inhibit Flash verify)
02h – security bit # 3 (disable external memory)
Return Parameter
none
Sample routines:
;***** Program Security Bit1 *****
;***** DPTR indicates security bit to program *****
WRSB1:
MOV
MOV
MOV
MOV
CALL
RET
AUXR1,#20H
R0,#11
R1,#05H
DPTR,#0000h
PGM_MTP
;set the ENBOOT bit
;FOSC
;program security bit function
;specify security bit 1
;execute the function
;***** Program Security Bit2 *****
;***** DPTR indicates security bit to program *****
WRSB2:
MOV
MOV
MOV
MOV
CALL
RET
AUXR1,#20H
R0,#11
R1,#05H
DPTR,#0001h
PGM_MTP
;set the ENBOOT bit
;FOSC
;program security bit function
;specify security bit 2
;execute the function
;***** Program Security Bit3 *****
;***** DPTR indicates security bit to program *****
WRSB3:
MOV
MOV
MOV
MOV
CALL
RET
AUXR1,#20H
R0,#11
R1,#05H
DPTR,#0002h
PGM_MTP
;set the ENBOOT bit
;FOSC
;program security bit function
;specify security bit 3
;execute the function
相關PDF資料
PDF描述
P89C668HBA 80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM
P89C668HFA 80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM
P89C668 80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM
P89C668HBBD 80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM
P89CE558 Single-chip 8-bit microcontroller(8位單片微控制器)
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