at89c51ic2-slsim ATMEL Corporation, at89c51ic2-slsim Datasheet - Page 24
at89c51ic2-slsim
Manufacturer Part Number
at89c51ic2-slsim
Description
At89c51ic2 8-bit Flash Microcontroller With 2-wire Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51IC2-SLSIM.pdf
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AT89C51IC2
Table 20. CKCON1 Register
CKCON1 - Clock Control Register (AFh)
Reset Value = XXXX XXX0b
Not bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic
SPIX2
Bit
6
-
-
-
-
-
-
-
-
Description
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SPI (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.
5
-
4
-
3
-
2
-
1
-
4301D–8051–02/08
SPIX2
0
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