PIC16F57-I/P Microchip Technology Inc., PIC16F57-I/P Datasheet - Page 47

• Manufacturer Part Number: PIC16F57-I/P
• Description: 28 PIN, 3K FLASH, 72 RAM, 20 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F57-I/P

• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Frequency: 20 MHz
• Input Output: 20
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin PDIP
• Programmable Memory: 3K Bytes
• Ram Size: 72 Bytes
• Speed: 20 MHz
• Timers: 1-8-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

CALL
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
CLRF
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
 2004 Microchip Technology Inc.
Before Instruction
After Instruction
Before Instruction
After Instruction
FLAG_REG =
FLAG_REG =
Z
PC
PC
TOS =
=
=
Subroutine Call
[ label ] CALL k
0
(PC) + 1
k
(Status<6:5>)
0
Subroutine call. First, return
address (PC + 1) is pushed onto
the stack. The eight-bit immediate
address is loaded into PC bits
<7:0>. The upper bits PC<10:9>
are loaded from Status<6:5>,
PC<8> is cleared. CALL is a
two-cycle instruction.
1
2
HERE
Clear f
[ label ] CLRF
0
00h
1
The contents of register ‘f’ are
cleared and the Z bit is set.
1
1
CLRF
1001
0000
address (HERE)
address (THERE)
address (HERE + 1)
k
f
=
PC<7:0>;
PC<8>
Z
31
(f);
255
CALL
FLAG_REG
0x5A
0x00
1
kkkk
011f
TOS;
f
PC<10:9>;
THERE
kkkk
ffff
CLRW
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
CLRWDT
Syntax:
Operands:
Operation:
Status Affected: TO, PD
Encoding:
Description:
Words:
Cycles:
Example:
Before Instruction
After Instruction
Before Instruction
After Instruction
WDT counter
WDT counter
WDT prescaler =
TO
PD
W
W
Z
=
=
=
Clear W
[ label ] CLRW
None
00h
1
The W register is cleared. Zero bit
(Z) is set.
1
1
CLRW
Clear Watchdog Timer
[ label ] CLRWDT
None
00h
0
1
1
The CLRWDT instruction resets the
WDT. It also resets the prescaler if
the prescaler is assigned to the
WDT and not Timer0. Status bits
TO and PD are set.
1
1
CLRWDT
0000
0000
0x5A
0x00
1
Z
WDT prescaler (if assigned);
TO;
PD
=
=
=
=
(W);
WDT;
0100
0000
PIC16F5X
0x00
0
1
1
?
DS41213C-page 45
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