PIC18F1220-H/ML Microchip Technology, PIC18F1220-H/ML Datasheet - Page 202
PIC18F1220-H/ML
Manufacturer Part Number
PIC18F1220-H/ML
Description
IC MCU 8BIT 4KB FLASH 28QFN
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheet
1.PIC18F1220-ISO.pdf
(308 pages)
Specifications of PIC18F1220-H/ML
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 150°C
Package / Case
28-VQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC18F1220/1320
BCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39605F-page 200
Q Cycle Activity:
Before Instruction
After Instruction
Decode
FLAG_REG
FLAG_REG
Q1
register ‘f’
Bit Clear f
[ label ] BCF
0 ≤ f ≤ 255
0 ≤ b ≤ 7
a ∈ [0,1]
0 → f<b>
None
Bit ‘b’ in register ‘f’ is cleared. If ‘a’
is ‘0’, the Access Bank will be
selected, overriding the BSR value.
If ‘a’ = 1, then the bank will be
selected as per the BSR value
(default).
1
1
BCF
Read
1001
Q2
=
=
0xC7
0x47
FLAG_REG, 7
bbba
Process
Data
Q3
f,b[,a]
ffff
register ‘f’
Write
Q4
ffff
BN
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
If Jump:
If No Jump:
Before Instruction
After Instruction
operation
Decode
Decode
PC
If Negative
If Negative
Q1
Q1
No
PC
PC
Read literal
Read literal
operation
Branch if Negative
[ label ] BN
-128 ≤ n ≤ 127
if Negative bit is ‘1’
(PC) + 2 + 2n → PC
None
If the Negative bit is ‘1’, then the
program will branch.
The 2’s complement number ‘2n’ is
added to the PC. Since the PC will
have incremented to fetch the next
instruction, the new address will be
PC + 2 + 2n. This instruction is then
a two-cycle instruction.
1
1(2)
HERE
1110
Q2
Q2
No
‘n’
‘n’
=
=
=
=
=
© 2007 Microchip Technology Inc.
address (HERE)
1;
address (Jump)
0;
address (HERE + 2)
0110
BN
operation
Process
Process
n
Data
Data
Q3
Q3
No
Jump
nnnn
Write to PC
operation
operation
Q4
Q4
No
No
nnnn
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