參數(shù)資料
型號: AT91SAM9XE256-CU
廠商: Atmel
文件頁數(shù): 18/159頁
文件大?。?/td> 0K
描述: MCU ARM9 256K FLASH 217-BGA
產品培訓模塊: MCU Product Line Introduction
標準包裝: 126
系列: SAM9XE
核心處理器: ARM9
芯體尺寸: 16/32-位
速度: 180MHz
連通性: EBI/EMI,以太網(wǎng),I²C,MMC,SPI,SSC,UART/USART,USB
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 96
程序存儲器容量: 256KB(256K x 8)
程序存儲器類型: 閃存
RAM 容量: 56K x 8
電壓 - 電源 (Vcc/Vdd): 1.65 V ~ 1.95 V
數(shù)據(jù)轉換器: A/D 4x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 217-LFBGA
包裝: 托盤
配用: AT91SAM9XE-EK-ND - KIT EVAL FOR AT91SAM9XE
AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
PIC16F62X
DS40300C-page 112
Preliminary
2003 Microchip Technology Inc.
CLRW
Clear W
Syntax:
[ label ] CLRW
Operands:
None
Operation:
00h
→ (W)
1
→ Z
Status Affected:
Z
Encoding:
00
0001
0000
0011
Description:
W register is cleared. Zero bit
(Z) is set.
Words:
1
Cycles:
1
Example
CLRW
Before Instruction
W = 0x5A
After Instruction
W = 0x00
Z= 1
CLRWDT
Clear Watchdog Timer
Syntax:
[ label ] CLRWDT
Operands:
None
Operation:
00h
→ WDT
0
→ WDT prescaler,
1
→ TO
1
→ PD
Status Affected:
TO, PD
Encoding:
00
0000
0110
0100
Description:
CLRWDT
instruction resets the
Watchdog Timer. It also resets
the prescaler of the WDT.
STATUS bits TO and PD are set.
Words:
1
Cycles:
1
Example
CLRWDT
Before Instruction
WDT counter = ?
After Instruction
WDT counter
= 0x00
WDT prescaler = 0
TO
=1
PD
=1
COMF
Complement f
Syntax:
[ label ] COMF
f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(f)
→ (dest)
Status Affected:
Z
Encoding:
00
1001
dfff
ffff
Description:
The contents of register 'f' are
complemented. If 'd' is 0 the
result is stored in W. 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 ≤ 127
d
∈ [0,1]
Operation:
(f) - 1
→ (dest)
Status Affected:
Z
Encoding:
00
0011
dfff
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
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