AT89C51RC2-3CSCM(2003) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C51RC2-3CSCM
(Rev.:2003)

8-bit Microcontroller with 16K/32K Bytes Flash

Atmel Corporation 

AT89C51RB2/RC2

Table 16. CKCON1 Register

CKCON1 - Clock Control Register (AFh)

7

6

5

4

3

2

1

0

-

-

-

-

-

-

-

SPIX2

Bit

Number

7

6

Bit

Mnemonic Description

-

Reserved

-

Reserved

5

-

Reserved

4

-

Reserved

3

-

Reserved

2

-

Reserved

1

-

Reserved

SPI (This control bit is validated when the CPU clock X2 is set; when X2 is low,

this bit has no effect).

0

SPIX2 Clear to select 6 clock periods per peripheral clock cycle.

Set to select 12 clock periods per peripheral clock cycle.

Reset Value = XXXX XXX0b

Not bit addressable

17

4180B–8051–04/03

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