HT47C20 Holtek Semiconductor Inc, HT47C20 Datasheet - Page 41

• Manufacturer Part Number: HT47C20
• Description: 8-Bit Microcontroller
• 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 located at the indi-
cated address. The program counter increments once to obtain the ad-
dress of the next instruction, and pushes this onto the stack. The
indicated address is then loaded. Program execution continues with the
instruction at this address.
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
The bit i of the specified data memory is cleared to zero.
[m].i ¬ 0
Clear watchdog timer
The WDT is cleared. The power down bit (PD) and time-out bit (TO) are
cleared.
WDT last two bits ¬ 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
41
PD
PD
PD
PD
¾
¾
¾
0
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
January 18, 2000
HT47C20