AT89C51CC03U-S3SIM ATMEL [ATMEL Corporation], AT89C51CC03U-S3SIM Datasheet - Page 19

• Manufacturer Part Number: AT89C51CC03U-S3SIM
• Description: Enhanced 8-bit MCU with CAN Controller and Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 5. Clock CPU Generation Diagram
4182I–CAN–06/05
XTAL1
XTAL2
CKCON.0
X2
÷
2
PCON.1
PD
CKCON1.0
SPIX2
÷
1
0
2
Hardware byte
CKCON0.7
CANX2
CKCON.0
X2B
÷
1
0
X2
2
CKCON0.6
WDX2
On RESET
÷
÷
1
0
2
2
CKCON0.5
PCAX2
÷
1
0
0
1
2
PCON.0
IDL
CKCON0.4
SIX2
÷
1
0
2
CKCON0.3
T2X2
÷
1
0
2
CKCON0.2
T1X2
÷
1
0
2
CPU Core Clock Symbol
CKCON0.1
T0X2
1
0
CLOCK
and ADC
CPU
CPU Core
Clock
Clock Symbol
Peripheral
PERIPH
CLOCK
FT1 Clock
FUart Clock
FPca Clock
FT0 Clock
FSPIClock
FT2 Clock
FCan Clock
FWd Clock
19