AT89C51CC03CA-7CTUM ATMEL [ATMEL Corporation], AT89C51CC03CA-7CTUM Datasheet - Page 21
AT89C51CC03CA-7CTUM
Manufacturer Part Number
AT89C51CC03CA-7CTUM
Description
Enhanced 8-bit MCU with CAN Controller and Flash Memory
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C51CC03CA-7CTUM.pdf
(197 pages)
- Current page: 21 of 197
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Registers
4182K–CAN–05/06
Table 2. CKCON0 Register
CKCON0 (S:8Fh)
Clock Control Register
Note:
Reset Value = 0000 0000b
Number
CANX2
Bit
7
7
6
5
4
3
2
1
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
CANX2
WDX2
PCAX2
WDX2
T2X2
T1X2
T0X2
SIX2
Bit
X2
6
CAN clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
WatchDog clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
Programmable Counter Array clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
Enhanced UART clock (MODE 0 and 2)
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
Timer2 clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
Timer1 clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
Timer0 clock
Clear to select 6 clock periods per peripheral clock cycle.
Set to select 12 clock periods per peripheral clock cycle.
CPU clock
Clear to select 12 clock periods per machine cycle (STD mode) for CPU and all
the peripherals.
Set to select 6 clock periods per machine cycle (X2 mode) and to enable the
individual peripherals "X2"bits.
PCAX2
5
(1)
(1)
(1)
(1)
SIX2
(1)
4
T2X2
3
(1)
(1)
T1X2
AT89C51CC03
2
T0X2
1
X2
0
21
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