PIC16C925/CL Microchip Technology, PIC16C925/CL Datasheet - Page 123

• Manufacturer Part Number: PIC16C925/CL
• Description: IC MCU EPROM 4KX14 LCDDVR 68CLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C925/CL

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 7KB (4K x 14)
• Program Memory Type: EPROM
• Ram Size: 176 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-CLCC Window, 68-CERQUAD
• For Use With: AC164308 - MODULE SKT FOR PM3 68PLCCDVA16XL680 - ADAPTER DEVICE FOR MPLAB-ICEAC164024 - ADAPTER PICSTART PLUS 68PLCCAC164022 - MODULE SKT PROMATEII 68PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

DECF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example
2001 Microchip Technology Inc.
Before Instruction:
After Instruction:
CNT
Z
CNT
Z
=
=
=
=
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’.
1
1
DECF
Decode
Q1
00
0x01
0
0x00
1
f
[0,1]
127
(destination)
register
CNT,
0011
Read
Q2
’f’
1
Process
dfff
data
Q3
destination
Write to
ffff
Q4
Preliminary
DECFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example
If Skip: (2nd Cycle)
Before Instruction:
After Instruction:
PC =
CNT
if CNT
PC
if CNT
PC
PIC16C925/926
address HERE
=
=
=
=
Decrement f, Skip if 0
[ label ] DECFSZ f [,d]
0
d
(f) - 1
skip if result = 0
None
The contents of register ’f’ are decre-
mented. If ’d’ is 0, the result is placed
in the W register. If ’d’ is 1, the result
is placed back in register ’f’.
If the result is 1, the next instruction is
executed. If the result is 0, then a NOP
is executed instead, making it a 2T
instruction.
1
1(2)
HERE
CONTINUE •
Operation
Decode
Q1
Q1
CNT - 1
0,
address CONTINUE
0,
address HERE+1
00
No
f
[0,1]
127
(destination);
register ’f’
Operation
DECFSZ
GOTO
•
•
1011
Read
Q2
Q2
No
DS39544A-page 121
Operation
Process
dfff
data
Q3
Q3
CNT, 1
LOOP
No
destination
Operation
Write to
ffff
Q4
Q4
No
CY