参数资料
型号: AT91SAM9XE512-QU
厂商: Atmel
文件页数: 120/159页
文件大小: 0K
描述: MCU ARM9 512K FLASH 208-PQFP
产品培训模块: MCU Product Line Introduction
标准包装: 24
系列: SAM9XE
核心处理器: ARM9
芯体尺寸: 16/32-位
速度: 180MHz
连通性: EBI/EMI,以太网,I²C,MMC,SPI,SSC,UART/USART,USB
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 96
程序存储器容量: 512KB(512K x 8)
程序存储器类型: 闪存
RAM 容量: 56K x 8
电压 - 电源 (Vcc/Vdd): 1.65 V ~ 1.95 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 208-MQFP,208-PQFP
包装: 托盘
配用: AT91SAM9XE-EK-ND - KIT EVAL FOR AT91SAM9XE
AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
2007 Microchip Technology Inc.
DS41213D-page 51
PIC16F5X
SUBWF
Subtract W from f
Syntax:
[ label ] SUBWF f, d
Operands:
0
≤ f ≤ 31
d
∈ [0,1]
Operation:
(f) – (W)
→ (dest)
Status Affected:
C, DC, Z
Encoding:
0000
10df
ffff
Description:
Subtract (2’s complement method)
the W register 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
Example 1:
SUBWF
REG1, 1
Before Instruction
REG1
=
3
W=
2
C=
?
After Instruction
REG1
=
1
W=
2
C
=
1
; result is positive
Example 2:
Before Instruction
REG1
=
2
W=
2
C=
?
After Instruction
REG1
=
0
W=
2
C
=
1
; result is zero
Example 3:
Before Instruction
REG1
=
1
W=
2
C=
?
After Instruction
REG1
=
0xFF
W=
2
C
=
0
; result is negative
SWAPF
Swap Nibbles in f
Syntax:
[ label ] SWAPF f, d
Operands:
0
≤ f ≤ 31
d
∈ [0,1]
Operation:
(f<3:0>)
→ (dest<7:4>);
(f<7:4>)
→ (dest<3:0>)
Status Affected:
None
Encoding:
0011
10df
ffff
Description:
The upper and lower nibbles of
register ‘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
Example:
SWAPF
REG1,
0
Before Instruction
REG1
=
0xA5
After Instruction
REG1
=
0xA5
W
=
0x5A
TRIS
Load TRIS Register
Syntax:
[ label ] TRIS
f
Operands:
f = 5, 6, 7, 8 or 9
Operation:
(W)
→ TRIS register f
Status Affected:
None
Encoding:
0000
0fff
Description:
TRIS register ‘f’ (f = 5, 6 or 7) is
loaded with the contents of the W
register.
Words:
1
Cycles:
1
Example:
TRIS
PORTB
Before Instruction
W=
0xA5
After Instruction
TRISB
=
0xA5
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