HT47C20 Holtek Semiconductor Inc, HT47C20 Datasheet - Page 38

• Manufacturer Part Number: HT47C20
• Description: 8-Bit Microcontroller
• Manufacturer: Holtek Semiconductor Inc

Note: x: 8 bits immediate data
Data Move
MOV A,[m]
MOV [m],A
MOV A,x
Bit Operation
CLR [m].i
SET [m].i
Branch
JMP addr
SZ [m]
SZA [m]
SZ [m].i
SNZ [m].i
SIZ [m]
SDZ [m]
SIZA [m]
SDZA [m]
CALL addr
RET
RET A,x
RETI
Table Read
TABRDC [m]
TABRDL [m]
Miscellaneous
NOP
CLR [m]
SET [m]
CLR WDT
CLR WDT1
CLR WDT2
SWAP [m]
SWAPA [m]
HALT
Mnemonic
m: 7 bits data memory address
A: accumulator
i: 0~7 number of bits
addr: 11 bits program memory address
Ö: Flag is affected
-: Flag is not affected
*: Flag may be affected by the execution status
Move data memory to ACC
Move ACC to data memory
Move immediate data to ACC
Clear bit of data memory
Set bit of data memory
Jump unconditional
Skip if data memory is zero
Skip if data memory is zero with data movement to ACC
Skip if bit i of data memory is zero
Skip if bit i of data memory is not zero
Skip if increment data memory is zero
Skip if decrement data memory is zero
Skip if increment data memory is zero with result in ACC
Skip if decrement data memory is zero with result in ACC
Subroutine call
Return from subroutine
Return from subroutine and load immediate data to ACC
Return from interrupt
Read ROM code (current page) to data memory and TBLH
Read ROM code (last page) to data memory and TBLH
No operation
Clear data memory
Set data memory
Clear watchdog timer
Pre-clear watchdog timer
Pre-clear watchdog timer
Swap nibbles of data memory
Swap nibbles of data memory with result in ACC
Enter power down mode
Description
38
Flag Affected
January 18, 2000
TO*, PD*
TO*, PD*
TO, PD
TO, PD
HT47C20
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None