T89C51RD2-RDTIM datasheet(12/104 Pages) ATMEL

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T89C51RD2-RDTIM 数据表(PDF) 12 Page - ATMEL Corporation

部件名	T89C51RD2-RDTIM

功能描述	0 to 40 MHz Flash Programmable 8-bit Microcontroller

PDF	104 Pages

Scroll/Zoom	100%

制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

标志

12 / 104 page

T89C51RD2

4243G–8051–05/03

Reset Value = X000 0000b

Not bit addressable

2T1X2

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

1T0X2

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

0X2

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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