UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 438

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

438
(12) CAN module bit rate prescaler register (C0BRP)
TQPRS7-TQPRS0
After reset: FFH
Caution The C0BRP register can be write-accessed only in the initialization mode.
Remark f
The C0BRP register is used to select the CAN protocol layer basic clock (f
is set to the C0BTR register.
C0BRP
255
0
1
n
f
:
:
CAN
f
f
CAN
CANMOD
TQ
:
:
TQPRS7 TQPRS6 TQPRS5 TQPRS4 TQPRS3 TQPRS2 TQPRS1 TQPRS0
: CAN module system clock
f
f
:
f
:
f
Clock supplied to CAN (f
CAN protocol layer basic system clock
7
CANMOD
CANMOD
CANMOD
CANMOD
Prescaler
/1
/2
/(n+1)
/256 (default value)
R/W
6
0
TQPRS7
CAN module clock selection register
Figure 16-25. CAN Module Clock
CHAPTER 16 CAN CONTROLLER
Address: FF9EH
f
CANMOD
0
User’s Manual U17554EJ4V0UD
5
CAN Protocol Layer Basic System Clock (f
TQPRS6
CAN module bit-rate prescaler register
0
PRS
Baud rate generator
)
4
TQPRS5
0
CCP3 CCP2
(C0GMCS)
TQPRS4
3
TQPRS3
f
TQ
CCP1 CCP0
2
(C0BRP)
TQPRS2
register (C0BTR)
CAN bit-rate
TQ
1
TQ
). The communication baud rate
TQPRS1
)
0
TQPRS0