参数资料
型号: AT89C51AC3-SLSIM
厂商: Atmel
文件页数: 43/140页
文件大小: 0K
描述: IC 8051 MCU FLASH 64K 44PLCC
标准包装: 27
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 36
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LCC(J 形引线)
包装: 管件
2009 Microchip Technology Inc.
DS70286C-page 135
dsPIC33FJXXXGPX06/X08/X10
REGISTER 8-8:
DMACS1: DMA CONTROLLER STATUS REGISTER 1
U-0
R-1
LSTCH<3:0>
bit 15
bit 8
R-0
PPST7
PPST6
PPST5
PPST4
PPST3
PPST2
PPST1
PPST0
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 15-12
Unimplemented: Read as ‘0’
bit 11-8
LSTCH<3:0>: Last DMA Channel Active bits
1111
= No DMA transfer has occurred since system Reset
1110
-1000 = Reserved
0111
= Last data transfer was by DMA Channel 7
0110
= Last data transfer was by DMA Channel 6
0101
= Last data transfer was by DMA Channel 5
0100
= Last data transfer was by DMA Channel 4
0011
= Last data transfer was by DMA Channel 3
0010
= Last data transfer was by DMA Channel 2
0001
= Last data transfer was by DMA Channel 1
0000
= Last data transfer was by DMA Channel 0
bit 7
PPST7: Channel 7 Ping-Pong Mode Status Flag bit
1
= DMA7STB register selected
0
= DMA7STA register selected
bit 6
PPST6: Channel 6 Ping-Pong Mode Status Flag bit
1
= DMA6STB register selected
0
= DMA6STA register selected
bit 5
PPST5: Channel 5 Ping-Pong Mode Status Flag bit
1
= DMA5STB register selected
0
= DMA5STA register selected
bit 4
PPST4: Channel 4 Ping-Pong Mode Status Flag bit
1
= DMA4STB register selected
0
= DMA4STA register selected
bit 3
PPST3: Channel 3 Ping-Pong Mode Status Flag bit
1
= DMA3STB register selected
0
= DMA3STA register selected
bit 2
PPST2: Channel 2 Ping-Pong Mode Status Flag bit
1
= DMA2STB register selected
0
= DMA2STA register selected
bit 1
PPST1: Channel 1 Ping-Pong Mode Status Flag bit
1
= DMA1STB register selected
0
= DMA1STA register selected
bit 0
PPST0: Channel 0 Ping-Pong Mode Status Flag bit
1
= DMA0STB register selected
0
= DMA0STA register selected
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