參數(shù)資料
型號(hào)： MC68HC05J5CDW
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝： SOIC-20
文件頁數(shù)： 52/69頁
文件大小： 394K
代理商： MC68HC05J5CDW
GENERAL RELEASE SPECIFICATION
December 11, 1996
MOTOROLA
INSTRUCTION SET
MC68HC05J5
9-2
REV 1.1
9.2
READ-MODIFY-WRITE INSTRUCTIONS
These instructions read a memory location or a register, modify or test its con-
tents, and write the modied value back to memory or to the register. The test for
negative or zero (TST) instruction is an exception to the read-modify-write
sequence since it does not modify the value. Do not use these read-modify-write
instructions on write-only locations. Refer to the following list of instructions.
9.3
BRANCH INSTRUCTIONS
This set of instructions branches if a particular condition is met; otherwise, no
operation is performed. Branch instructions are two-byte instructions. Refer to the
following list for branch instructions.
Function
Mnemonic
Increment
INC
Decrement
DEC
Clear
CLR
Complement
COM
Negate (Two’s Complement)
NEG
Rotate Left to Carry
ROL
Rotate Right to Carry
ROR
Logical Shift Left
LSL
Logical Shift Right
LSR
Arithmetic Shift Right
ASR
Arithmetic Shift Left
ASL
Test for Negative or Zero
TST
Function
Mnemonic
Branch Always
BRA
Branch Never
BRN
Branch if Higher
BHI
Branch if Lower or Same
BLS
Branch if Carry Clear
BCC
Branch if Higher or Same
BHS
Branch if Carry Set
BCS
Branch if Lower
BLO
Branch if Not Equal
BNE
Branch if Equal
BEQ
Branch if Half Carry Clear
BHCC
Branch if Half Carry Set
BHCS
Branch if Plus
BPL
Branch if Minus
BMI
Branch if Interrupt Mask Bit is Clear
BMC
Branch if Interrupt Mask Bit is Set
BMS
Branch if Interrupt Line is Low
BIL
Branch if Interrupt Line is High
BIH
Branch to Subroutine
BSR
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