參數(shù)資料
型號： AT90S8535-8PI
廠商： Atmel
文件頁數(shù)： 110/127頁
文件大?。?/td> 0K
描述： IC MCU 8K FLSH 8MHZ A/D IT 40DIP
標準包裝： 18
系列： AVR® 90S
核心處理器： AVR
芯體尺寸： 8-位
速度： 8MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 32
程序存儲器容量： 8KB（4K x 16）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量： 512 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
1997 Microchip Technology Inc.
DS30272A-page 83
PIC16C71X
SUBWF
Subtract W from f
Syntax:
[
label ]
SUBWF f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(f) - (W)
→ (dest)
Status Affected:
C, DC, Z
Encoding:
00
0010
dfff
ffff
Description:
Subtract (2’s complement method) W reg-
ister from 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
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
data
Write to
dest
Example 1:
SUBWF
REG1,
1
Before Instruction
REG1
=
3
W
=
2
C
=
?
Z
=
?
After Instruction
REG1
=
1
W
=
2
C
=
1; result is positive
Z
=
0
Example 2:
Before Instruction
REG1
=
2
W
=
2
C
=
?
Z
=
?
After Instruction
REG1
=
0
W
=
2
C
=
1; result is zero
Z
=
1
Example 3:
Before Instruction
REG1
=
1
W
=
2
C
=
?
Z
=
?
After Instruction
REG1
=
0xFF
W
=
2
C
=
0; result is negative
Z
=
0
SWAPF
Swap Nibbles in f
Syntax:
[
label ] SWAPF f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(f<3:0>)
→ (dest<7:4>),
(f<7:4>)
→ (dest<3:0>)
Status Affected:
None
Encoding:
00
1110
dfff
ffff
Description:
The upper and lower nibbles of regis-
ter 'f' are exchanged. If 'd' is 0 the
result is placed in W register. If 'd' is 1
the result is placed in register 'f'.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
data
Write to
dest
Example
SWAPF
REG,
0
Before Instruction
REG1
=
0xA5
After Instruction
REG1
=
0xA5
W
=
0x5A
TRIS
Load TRIS Register
Syntax:
[
label]
TRIS
f
Operands:
5
≤ f ≤ 7
Operation:
(W)
→ TRIS register f;
Status Affected: None
Encoding:
00
0000
0110
0fff
Description:
The instruction is supported for code
compatibility with the PIC16C5X prod-
ucts. Since TRIS registers are read-
able and writable, the user can directly
address them.
Words:
1
Cycles:
1
Example
To maintain upward compatibility
with future PIC16CXX products, do
not use this instruction.
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