參數(shù)資料
型號: AT89C51AC3-RLTIM
廠商: Atmel
文件頁數(shù): 37/140頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 64K 44VQFP
標準包裝: 160
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 60MHz
連通性: UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 36
程序存儲器容量: 64KB(64K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 2.25K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LQFP
包裝: 托盤
2009 Microchip Technology Inc.
DS70286C-page 129
dsPIC33FJXXXGPX06/X08/X10
REGISTER 8-1:
DMAxCON: DMA CHANNEL x CONTROL REGISTER
R/W-0
U-0
CHEN
SIZE
DIR
HALF
NULLW
bit 15
bit 8
U-0
R/W-0
U-0
R/W-0
—AMODE<1:0>
MODE<1:0>
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CHEN: Channel Enable bit
1
= Channel enabled
0
= Channel disabled
bit 14
SIZE: Data Transfer Size bit
1
= Byte
0
= Word
bit 13
DIR: Transfer Direction bit (source/destination bus select)
1
= Read from DMA RAM address, write to peripheral address
0
= Read from peripheral address, write to DMA RAM address
bit 12
HALF: Early Block Transfer Complete Interrupt Select bit
1
= Initiate block transfer complete interrupt when half of the data has been moved
0
= Initiate block transfer complete interrupt when all of the data has been moved
bit 11
NULLW: Null Data Peripheral Write Mode Select bit
1
= Null data write to peripheral in addition to DMA RAM write (DIR bit must also be clear)
0
= Normal operation
bit 10-6
Unimplemented: Read as ‘0’
bit 5-4
AMODE<1:0>: DMA Channel Operating Mode Select bits
11
= Reserved
10
= Peripheral Indirect Addressing mode
01
= Register Indirect without Post-Increment mode
00
= Register Indirect with Post-Increment mode
bit 3-2
Unimplemented: Read as ‘0’
bit 1-0
MODE<1:0>: DMA Channel Operating Mode Select bits
11
= One-Shot, Ping-Pong modes enabled (one block transfer from/to each DMA RAM buffer)
10
= Continuous, Ping-Pong modes enabled
01
= One-Shot, Ping-Pong modes disabled
00
= Continuous, Ping-Pong modes disabled
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