label ] COMF f,d" />
參數(shù)資料
型號： PIC12C509AT-04I/MF
廠商： Microchip Technology
文件頁數(shù)： 62/113頁
文件大?。?/td> 0K
描述： IC MCU OTP 1KX12 8-DFN
標準包裝： 3,300
系列： PIC® 12C
核心處理器： PIC
芯體尺寸： 8-位
速度： 4MHz
外圍設(shè)備： POR，WDT
輸入/輸出數(shù)： 5
程序存儲器容量： 1.5KB（1K x 12）
程序存儲器類型： OTP
RAM 容量： 41 x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 8-VDFN 裸露焊盤
包裝： 帶卷 (TR)
配用： AC164324-ND - MODULE SKT FOR MPLAB 8DFN/16QFN
XLT08DFN2-ND - SOCKET TRANSITION ICE 14DIP/8DFN
XLT08DFN-ND - SOCKET TRANSITION ICE 8DFN
AC164032-ND - ADAPTER PICSTART PLUS 8DFN/DIP
AC124001-ND - MODULE SKT PROMATEII 8DIP/SOIC
其它名稱： PIC12C509AT04I/MF
PIC12C5XX
DS40139E-page 52
1999 Microchip Technology Inc.
COMF
Complement f
Syntax:
[
label ] COMF
f,d
Operands:
0
≤ f ≤ 31
d
∈ [0,1]
Operation:
(f)
→ (dest)
Status Affected:
Z
Encoding:
0010
01df
ffff
Description:
The contents of register ’f’ are comple-
mented. If ’d’ is 0 the result is stored in
the W register. If ’d’ is 1 the result is
stored back in register ’f’.
Words:
1
Cycles:
1
Example:
COMF
REG1,0
Before Instruction
REG1
=
0x13
After Instruction
REG1
=
0x13
W=
0xEC
DECF
Decrement f
Syntax:
[
label ] DECF f,d
Operands:
0
≤ f ≤ 31
d
∈ [0,1]
Operation:
(f) – 1
→ (dest)
Status Affected:
Z
Encoding:
0000
11df
ffff
Description:
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’.
Words:
1
Cycles:
1
Example:
DECF
CNT,
1
Before Instruction
CNT
=
0x01
Z=
0
After Instruction
CNT
=
0x00
Z=
1
DECFSZ
Decrement f, Skip if 0
Syntax:
[
label ] DECFSZ f,d
Operands:
0
≤ f ≤ 31
d
∈ [0,1]
Operation:
(f) – 1
→ d; skip if result = 0
Status Affected:
None
Encoding:
0010
11df
ffff
Description:
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 0, the next instruction,
which is already fetched, is discarded
and an NOP is executed instead mak-
ing it a two cycle instruction.
Words:
1
Cycles:
1(2)
Example:
HERE
DECFSZ
CNT, 1
GOTO
LOOP
CONTINUE
Before Instruction
PC
=
address
(HERE)
After Instruction
CNT
=
CNT - 1;
if CNT
=
0,
PC
=
address (CONTINUE);
if CNT
≠
0,
PC
=
address (HERE+1)
GOTO
Unconditional Branch
Syntax:
[
label ]
GOTO k
Operands:
0
≤ k ≤ 511
Operation:
k
→ PC<8:0>;
STATUS<6:5>
→ PC<10:9>
Status Affected:
None
Encoding:
101k
kkkk
Description:
GOTO
is an unconditional branch. The
9-bit immediate value is loaded into PC
bits <8:0>. The upper bits of PC are
loaded from STATUS<6:5>. GOTO is a
two cycle instruction.
Words:
1
Cycles:
2
Example:
GOTO THERE
After Instruction
PC =
address
(THERE)
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