PIC16F627A-I/P Microchip Technology Inc., PIC16F627A-I/P Datasheet - Page 120

• Manufacturer Part Number: PIC16F627A-I/P
• Description: 18 PIN, 1.75 KB FLASH, 224 RAM, 16 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F627A-I/P

• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 128 Bytes
• Input Output: 16
• Interface: SCI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 18-pin PDIP
• Programmable Memory: 1.75K Bytes
• Ram Size: 224 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

PIC16F62X
DS40300C-page 118
RRF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
SLEEP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Rotate Right f through Carry
[ label ]
0 ≤ f ≤ 127
d ∈ [0,1]
See description below
C
00
The contents of register 'f' are
rotated one bit to the right
through the Carry Flag. If 'd' is 0
the result is placed in the W
register. If 'd' is 1 the result is
placed back in register 'f'.
1
1
RRF
Before Instruction
After Instruction
[ label ] SLEEP
None
00h → WDT,
0 → WDT prescaler,
1 → TO,
0 → PD
TO, PD
00
The power-down STATUS bit,
PD is cleared. Timeout
STATUS bit, TO is set.
Watchdog Timer and its
prescaler are cleared.
The processor is put into
SLEEP mode with the
oscillator stopped. See
Section 14.9 for more details.
1
1
SLEEP
REG1 = 1110 0110
C
REG1 = 1110 0110
W
C
C
1100
REG1, 0
0000
RRF f,d
= 0
= 0111 0011
= 0
REGISTER F
dfff
0110
0011
ffff
Preliminary
SUBLW
Syntax:
Operands:
Operation:
Status
Affected:
Encoding:
Description:
Words:
Cycles:
Example 1:
Example 2:
Example 3:
Subtract W from Literal
[ label ]
0 ≤ k ≤ 255
k - (W) → (W)
C, DC, Z
11
The W register is subtracted (2’s
complement method) from the eight
bit literal 'k'. The result is placed in
the W register.
1
1
SUBLW
Before Instruction
After Instruction
Before Instruction
After Instruction
Before Instruction
After Instruction
 2003 Microchip Technology Inc.
W = 1
C = ?
W = 1
C = 1; result is positive
W = 3
C = ?
W = 0xFF
C = 0; result is negative
W = 2
C = ?
W = 0
C = 1; result is zero
SUBLW k
110x
0x02
kkkk
kkkk