參數資料
型號: T89C51RD2-DDVCM
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 0 to 40 MHz Flash Programmable 8-bit Microcontroller
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, UUC
封裝: DIE
文件頁數: 12/104頁
文件大?。?/td> 798K
代理商: T89C51RD2-DDVCM
12
T89C51RD2
4243G
8051
05/03
Reset Value = X000 0000b
Not bit addressable
2
T1X2
Timer1 clock
(This control bit is validated when the CPU clock X2 is set; when X2
is low, this bit has no effect)
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle
1
T0X2
Timer0 clock
(This control bit is validated when the CPU clock X2 is set; when X2
is low, this bit has no effect)
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle
0
X2
CPU clock
Clear to select 12 clock periods per machine cycle (STD mode) for CPU and all the
peripherals.
Set to select 6clock periods per machine cycle (X2 mode) and to enable the
individual peripherals "X2" bits.
Bit
Number
Bit
Mnemonic Description
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