ht827a0 Holtek Semiconductor Inc., ht827a0 Datasheet - Page 33

• Manufacturer Part Number: ht827a0
• Description: 8-bit Microcontroller With Voice Rom
• Manufacturer: Holtek Semiconductor Inc.

CALL addr
Description
Operation
Affected flag(s)
CLR [m]
Description
Operation
Affected flag(s)
CLR [m].i
Description
Operation
Affected flag(s)
CLR WDT
Description
Operation
Affected flag(s)
Subroutine call
The instruction unconditionally calls a subroutine which is located at the in-
dicated address. The program counter increments once to obtain the address
of the next instruction, and pushes this onto the stack. The indicated address
is then loaded. Program execution continues with the instruction at this ad-
dress.
Stack ¬ PC+1
PC ¬ addr
Clear data memory
The contents of the specified data memory are cleared to zero.
[m] ¬ 00H
Clear bit of data memory
Bit i of the specified data memory is cleared to zero.
[m].i ¬ 0
Clear watchdog timer
The WDT and WDT Prescaler are cleared (re-count from zero). The power
down bit (PD) and time-out bit (TO) are both cleared.
WDT & WDT Prescaler ¬ 00H
PD & TO ¬ 0
TC2
TC2
TC2
TC2
¾
¾
¾
¾
TC1
TC1
TC1
TC1
¾
¾
¾
¾
TO
TO
TO
TO
¾
¾
¾
0
PD
PD
PD
PD
¾
¾
¾
0
33
OV
OV
OV
OV
¾
¾
¾
¾
¾
¾
¾
¾
Z
Z
Z
Z
AC
AC
AC
AC
¾
¾
¾
¾
¾
¾
¾
¾
C
C
C
C
March 15, 2000
HT827A0