Z51F3220FNX Datasheet, PDF (305/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
15.1.10 Read Mode
The Reading program procedure in user program mode
1. Load receive data from flash memory on MOVC instruction by indirectly addressing mode.
Program Tip – reading
MOV
MOV
MOV
A,#0
DPH,#0x7F
DPL,#0x40
MOVC A,@A+DPTR
;flash memory address
;read data from flash memory
15.1.11 Hard Lock Mode
The Reading program procedure in user program mode
1. Set flash identification register (FIDR).
2. Set flash mode control register (FMCR).
Program Tip – reading
MOV
MOV
NOP
NOP
NOP
FIDR,#0xA5
FMCR,#0x04
;Identification value
;Start flash hard lock mode
;Dummy instruction, This instruction must be needed.
;Dummy instruction, This instruction must be needed.
;Dummy instruction, This instruction must be needed.
PS029902-0212
PRELIMINARY
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