參數(shù)資料
型號(hào): PIC18F86K90-E/PT
廠商: Microchip Technology
文件頁(yè)數(shù): 21/110頁(yè)
文件大?。?/td> 0K
描述: IC MCU 8BIT 64KB FLASH 80TQFP
標(biāo)準(zhǔn)包裝: 119
系列: PIC® XLP™ 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 64MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,LCD,POR,PWM,WDT
輸入/輸出數(shù): 69
程序存儲(chǔ)器容量: 64KB(32K x 16)
程序存儲(chǔ)器類(lèi)型: 閃存
EEPROM 大小: 1K x 8
RAM 容量: 4K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 24x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 80-TQFP
包裝: 托盤(pán)
PIC18F47J53 FAMILY
DS39964B-page 468
Preliminary
2010 Microchip Technology Inc.
BCF
Bit Clear f
Syntax:
BCF
f, b {,a}
Operands:
0
f 255
0
b 7
a
[0,1]
Operation:
0
f<b>
Status Affected:
None
Encoding:
1001
bbba
ffff
Description:
Bit ‘b’ in register ‘f’ is cleared.
If ‘a(chǎn)’ is ‘0’, the Access Bank is selected.
If ‘a(chǎn)’ is ‘1’, the BSR is used to select the
GPR bank (default).
If ‘a(chǎn)’ is ‘0’ and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f
95 (5Fh). See
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register ‘f’
Process
Data
Write
register ‘f’
Example:
BCF
FLAG_REG,
7, 0
Before Instruction
FLAG_REG = C7h
After Instruction
FLAG_REG = 47h
BN
Branch if Negative
Syntax:
BN
n
Operands:
-128
n 127
Operation:
if Negative bit is ‘1’,
(PC) + 2 + 2n
PC
Status Affected:
None
Encoding:
1110
0110
nnnn
Description:
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.
Words:
1
Cycles:
1(2)
Q Cycle Activity:
If Jump:
Q1
Q2
Q3
Q4
Decode
Read literal
‘n’
Process
Data
Write to
PC
No
operation
No
operation
No
operation
No
operation
If No Jump:
Q1
Q2
Q3
Q4
Decode
Read literal
‘n’
Process
Data
No
operation
Example:
HERE
BN
Jump
Before Instruction
PC
=
address (HERE)
After Instruction
If Negative
=
1;
PC
=
address (Jump)
If Negative
=
0;
PC
=
address (HERE + 2)
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