UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 511

• 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

Note Clear all TRQ bits when re-initialization of message buffer is executed by clearing RDY bit before bus-off
Caution When the transmission from the initialization mode to any operation modes is requested to
Remark OPMODE: Normal operation mode, normal operation mode with ABT, receive-only mode, single-shot
recovery sequence is started.
execute bus-off recovery sequence again in the bus-off recovery sequence, reception error
counter is cleared.
Therefore it is necessary to detect 11 consecutive recessive-level bits 128 times on the bus
again.
Figure 16-56. Bus-Off Recovery (Expect Normal Operation Mode with ABT)
No
mode, self-test mode
Forced recovery from bus off?
Access to registers other than
C0CTRL and C0GMCTRL
Set C0CTRL register
Set C0CTRL register
(Clear OPMODE)
Clear all TRQ bits
(Set OPMODE)
Set CCERC bit
Yes
BOFF = 1?
registers
START
END
CHAPTER 16 CAN CONTROLLER
Yes
User’s Manual U17554EJ4V0UD
Note
No
Set C0CTRL register
Wait for recovery
from bus off
(Set OPMODE)
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