PIC16F877A-I/PT Microchip Technology Inc., PIC16F877A-I/PT Datasheet - Page 140

• Manufacturer Part Number: PIC16F877A-I/PT
• Description: 44 PIN, 7 KB FLASH, 368 RAM, 33 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F877A-I/PT

• A/d Inputs: 8-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 33
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TQFP
• Programmable Memory: 14K Bytes
• Ram Size: 368 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F87X
CALL
Syntax:
Operands:
Operation:
Status Affected:
Description:
CLRF
Syntax:
Operands:
Operation:
Status Affected:
Description:
CLRW
Syntax:
Operands:
Operation:
Status Affected:
Description:
DS30292C-page 138
Call Subroutine
[ label ] CALL k
0
(PC)+ 1
k
(PCLATH<4:3>)
None
Call Subroutine. First, return
address (PC+1) is pushed onto
the stack. The eleven-bit immedi-
ate address is loaded into PC bits
<10:0>. The upper bits of the PC
are loaded from PCLATH. CALL is
a two-cycle instruction.
Clear W
[ label ] CLRW
None
00h
1
Z
W register is cleared. Zero bit (Z)
is set.
Clear f
[label] CLRF
0
00h
1
Z
The contents of register ’f’ are
cleared and the Z bit is set.
k
f
PC<10:0>,
Z
Z
2047
127
(W)
(f)
TOS,
f
PC<12:11>
CLRWDT
Syntax:
Operands:
Operation:
Status Affected:
Description:
COMF
Syntax:
Operands:
Operation:
Status Affected:
Description:
DECF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Complement f
[ label ] COMF
0
d
(f)
Z
The contents of register ’f’ are
complemented. If ’d’ is 0, the
result is stored in W. If ’d’ is 1, the
result is stored back in register ’f’.
Decrement f
[label] DECF f,d
0
d
(f) - 1
Z
Decrement register ’f’. If ’d’ is 0,
the result is stored in the W
register. If ’d’ is 1, the result is
stored back in register ’f’.
Clear Watchdog Timer
[ label ] CLRWDT
None
00h
0
1
1
TO, PD
CLRWDT instruction resets the
Watchdog Timer. It also resets
the prescaler of the WDT. Status
bits TO and PD are set.
f
f
[0,1]
[0,1]
WDT prescaler,
TO
PD
(destination)
127
127
2001 Microchip Technology Inc.
WDT
(destination)
f,d