HT85F2270 datasheet(222/226 Pages) HOLTEK

222 / 226 page

Rev. 1.00

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Standard 8051 8-Bit Flash MCU

HT85F2260/HT85F2270/HT85F2280

Boolean Manipulation

Mnemonic

Description

Code

Bytes Cycles

CLR C

Clear carry flag

0XC�

CLR bit

Clear directl� addressed bit

0XC�

�

SETB C

Set carry flag

0XD�

SETB bit

Set directl� addressed bit

0XD�

�

CPL C

Complement carry flag

0XB�

CPL bit

Complement directl� addressed bit

0XB�

�

ANL C� bit

AND directly addressed bit to carry flag

0X8�

�

ANL C�/bit

AND complement of directl� addressed bit to carr�

0XB0

�

ORL C� bit

OR directly addressed bit to carry flag

0X7�

�

ORL C�/bit

OR complement of directl� addressed bit to carr�

0XA0

�

�OV C� bit

Move directly addressed bit to carry flag

0XA�

�

�OV bit� C

Move carry flag to directly addressed bit

0X9�

�

Read-Modify-Write Instruction

Instructions that read a byte from SFR or internal RAM, modify it and rewrite it back, are called

“Read-Modify-Write” instructions. When the destination is an I/O port (P0-P3), or a Port bit, these

instructions read the output latch rather than the pin. Below table is RMW instruction set.

Mnemonic

Description

Code

Bytes Cycles

ANL direct� A

AND accumulator to direct

0x��

�

ANL direct� #data AND immediate data to direct

0x��

�

ORL direct� A

OR accumulator to direct

0x4�

�

ORL direct� #data OR immediate data to direct

0x4�

�

XRL direct� A

Exclusive OR accumulator to direct

0x6�

�

XRL direct� #data Exclusive OR immediate data to direct

0x6�

�

JBC bit� rel

Jump if bit is set and clear bit

0x10

�

4/�(*)

CPL bit

Complement bit

0xB�

�

INC direct

Increment direct

0x0�

�

INC @Ri

Increment indirect

0x06-0x07

�

DEC direct

Decrement direct

0x1�

�

DEC @Ri

Decrement indirect

0x16-0x17

�

DJNZ direct� rel

Decrement and jump if not zero

0xD�

�

4/�(*)

�OV bit� C

Move carry flag and direct bit

0x9�

�

CLR bit

Clear bit

0xC�

�

SETB bit

Set bit

0xD�

�

Note: (*) If the condition is true� the machine c�cle will add 1.

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