AT89C51CC03CA-7CTUM ATMEL [ATMEL Corporation], AT89C51CC03CA-7CTUM Datasheet - Page 22

• Manufacturer Part Number: AT89C51CC03CA-7CTUM
• Description: Enhanced 8-bit MCU with CAN Controller and Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

22
AT89C51CC03
Table 3. CKCON1 Register
CKCON1 (S:9Fh)
Clock Control Register 1
Note:
Reset Value = 0000 0000b
Number
Bit
7-1
7
0
1. This control bit is validated when the CPU clock bit X2 is set; when X2 is low, this bit
has no effect.
Mnemonic Description
SPIX2
Bit
6
-
Reserved
The value read from these bits is indeterminate. Do not set these bits.
SPI clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
5
(1)
4
3
2
4182K–CAN–05/06
1
SPIX2
0