UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 495

• 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

101B).
Notes 1. Confirm that a message is being received because RDY bit must be set after a message is completely
Figure 16-40 shows the processing for a receive message buffer (MT [2:0] bits of C0MCONFm register = 001B to
2. Avoid message buffer redefinition during store operation of message reception by waiting additional 4
received.
CAN data bits.
Figure 16-40. Message Buffer Redefinition
No
CHAPTER 16 CAN CONTROLLER
User’s Manual U17554EJ4V0UD
Wait for 4 CAN data bits
message buffers
Clear VALID bit
RSTAT = 0 or
VALID = 1?
Clear RDY bit
Set RDY bit
Yes
RDY = 1?
RDY = 0?
START
END
Set
Yes
Yes
Note1
Note 2
No
No
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