PIC16C54B-20I/P Microchip Technology, PIC16C54B-20I/P Datasheet - Page 47

• Manufacturer Part Number: PIC16C54B-20I/P
• Description: MICRO CTRL 512 20MHZ OTP 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C54B-20I/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: POR, WDT
• Number Of I /o: 12
• Program Memory Size: 768B (512 x 12)
• Program Memory Type: OTP
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

CALL
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
CLRF
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
1998 Microchip Technology Inc.
Before Instruction
After Instruction
Before Instruction
After Instruction
PC =
PC =
TOS =
FLAG_REG
FLAG_REG
Z
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 STA-
TUS<6:5>, PC<8> is cleared. CALL is
a two cycle instruction.
1
2
HERE
address (HERE)
address (THERE)
address (HERE + 1)
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
k
f
PC<7:0>;
=
=
=
PC<8>
Z
31
255
(f);
CALL
FLAG_REG
0x5A
0x00
1
kkkk
011f
Top of Stack;
f
THERE
PC<10:9>;
kkkk
ffff
Preliminary
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
W
W
Z
WDT counter =
WDT counter =
WDT prescale =
TO
PD
=
=
=
Clear W
[ label ] CLRW
None
00h
1
The W register is cleared. Zero bit (Z)
is set.
1
1
CLRW
0x5A
0x00
1
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
TO;
=
=
Z
WDT prescaler (if assigned);
PD
WDT;
(W);
?
0x00
0
1
1
PIC16C5X
0100
0000
DS30453B-page 47
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