PIC16F628AT-I/SS Microchip Technology, PIC16F628AT-I/SS Datasheet - Page 128
![IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC](/photos/6/58/65895/150-20-ssop_sml.jpg)
PIC16F628AT-I/SS
Manufacturer Part Number
PIC16F628AT-I/SS
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16F628AT-I/SS
Rohs Compliant
YES
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
Program Memory Size
3.5KB (2K x 14)
Program Memory Type
FLASH
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
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
I3DBF648 - BOARD DAUGHTER ICEPIC3AC162053 - HEADER INTERFACE ICD,ICD2 18DIP
Data Converters
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC16F627A/628A/648A
DS40044G-page 128
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. Time out 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 14.8
“Power-Down Mode (Sleep)”
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
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
© 2009 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
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