PIC16F628A-I/P Microchip Technology, PIC16F628A-I/P Datasheet - Page 122

• Manufacturer Part Number: PIC16F628A-I/P
• Description: IC MCU FLASH 2KX14 EEPROM 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F628A-I/P

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 18-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Eeprom Size: 128 x 8
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 224 B
• Interface Type: SCI/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• Package: 18PDIP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: I3DBF648 - BOARD DAUGHTER ICEPIC3AC162053 - HEADER INTERFACE ICD,ICD2 18DIPACICE0202 - ADAPTER MPLABICE 18P 300 MILAC164010 - MODULE SKT PROMATEII DIP/SOIC
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16F627A/628A/648A
DS40044G-page 122
CLRW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
CLRWDT
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Clear W
[ label ] CLRW
None
00h → (W)
1 → Z
Z
00
W register is cleared. Zero bit
(Z) is set.
1
1
CLRW
Before Instruction
After Instruction
Clear Watchdog Timer
[ label ] CLRWDT
None
00h → WDT
0 → WDT prescaler,
1 → TO
1 → PD
TO, PD
00
CLRWDT instruction resets the
Watchdog Timer. It also resets
the prescaler of the WDT. Status
bits TO and PD are set.
1
1
CLRWDT
Before Instruction
After Instruction
W = 0x5A
W = 0x00
Z = 1
WDT counter = ?
WDT counter
WDT prescaler = 0
TO
PD
0001
0000
0000
0110
= 0x00
= 1
= 1
0011
0100
COMF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
DECF
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Syntax:
Complement f
[ label ] COMF
0 ≤ f ≤ 127
d ∈ [0,1]
(f) → (dest)
Z
00
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’.
1
1
COMF
Before Instruction
After Instruction
Decrement f
[ label ] DECF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) - 1 → (dest)
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’.
1
1
DECF
Before Instruction
After Instruction
00
© 2009 Microchip Technology Inc.
REG1 = 0x13
REG1 = 0x13
W
CNT = 0x01
Z
CNT = 0x00
Z
1001
REG1, 0
0011
CNT, 1
= 0
= 1
= 0xEC
dfff
dfff
f,d
ffff
ffff