Eeprom Manipulation Method; Eeprom Manipulation Instructions - NEC PD754144 User Manual

4-bit single-chip microcontrollers
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5.5 EEPROM Manipulation Method

5.5.1 EEPROM manipulation instructions

Instructions that can be used to manipulate the EEPROM are shown below, divided into read instructions and
write instructions.
(1) Read manipulation instructions
Instruction Group
Transfer instruction
Compare instruction
Remark Operation instruction such as ADDS, AND, etc., cannot be used.
(2) Write manipulation instructions
Instruction Group
Transfer instruction
Remark INCS (increment/decrement instruction) cannot be used.
An 8-bit memory manipulation instruction is used to manipulate EEPROM.
manipulation instruction can be used to check EWST.
A 4-bit memory manipulation instruction cannot be used.
CHAPTER 5 EEPROM
Mnemonic
Operand
MOV
XA, @HL
MOV
XA, mem
SKE
XA, @HL
Mnemonic
Operand
MOV
@HL, XA
MOV
mem, XA
XCH
XA, @HL
XCH
XA, mem
User's Manual U10676EJ3V0UM
Furthermore, a bit memory
83

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