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T89C51RD2-DDFC-L View Datasheet(PDF) - Atmel Corporation

Part Name
Description
Manufacturer
T89C51RD2-DDFC-L
Atmel
Atmel Corporation Atmel
T89C51RD2-DDFC-L Datasheet PDF : 86 Pages
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T89C51RD2
Bit
Bit
Number Mnemonic
Description
Timer0 clock (This control bit is validated when the CPU clock X2 is set; when X2 is low, this bit has no effect)
1
T0X2
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle
CPU clock
0
X2
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.
Reset Value = X000 0000b
Not bit addressable
Rev. F - 15 February, 2001
12
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