参数资料
型号: T89C51AC2-SLSIM
厂商: Atmel
文件页数: 114/121页
文件大小: 0K
描述: IC 8051 MCU FLASH 32K 44PLCC
标准包装: 27
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 1.25K 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
92
A/T89C51AC2
4127H–8051–02/08
Table 65. ADCLK Register
ADCLK (S:F2h)
ADC Clock Prescaler
Reset Value = XXX0 0000b
Table 66. ADDH Register
ADDH (S:F5h Read Only)
ADC Data High Byte Register
Reset Value = 00h
Table 67. ADDL Register
ADDL (S:F4h Read Only)
ADC Data Low Byte Register
Reset Value = 00h
7
6
5
4
3
2
1
0
-
PRS 4
PRS 3
PRS 2
PRS 1
PRS 0
Bit
Number
Bit
Mnemonic Description
7-5
-
Reserved
The value read from these bits are indeterminate. Do not set these bits.
4-0
PRS4:0
Clock Prescaler
f
ADC = fcpu clock/ (4 (or 2 in X2 mode)* PRS )
7
6
5
4
3
2
1
0
ADAT 9
ADAT 8
ADAT 7
ADAT 6
ADAT 5
ADAT 4
ADAT 3
ADAT 2
Bit
Number
Bit
Mnemonic Description
7-0
ADAT9:2
ADC result
bits 9-2
7
6
5
4
3
2
1
0
-
ADAT 1
ADAT 0
Bit
Number
Bit
Mnemonic Description
7-2
-
Reserved
The value read from these bits are indeterminate. Do not set these bits.
1-0
ADAT1:0
ADC result
bits 1-0
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