UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 469

• 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

Last out-message
pointer(LOPT)
Last out-message
pointer(LOPT)
LOPT is locked.
Transmit history list(THL)
Transmit history list(THL)
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Message buffer 5
Message buffer 4
Message buffer 8
Message buffer 3
Message buffer 7
Message buffer 2
Message buffer 9
Message buffer 7
Message buffer 2
Message buffer 9
Message buffer 6
Figure 16-32. Transmit History List
TOVF is set.
If transmission from
message buffers 3 and 4
is completed
CHAPTER 16 CAN CONTROLLER
When transmission from message
buffer 3 is completed.
Transmit history list
get pointer(TGPT)
Transmit history list
get pointer(TGPT)
User’s Manual U17554EJ4V0UD
When message buffer 6 is read
When TOVF = 1, message buffer
number is stored (overwritten) to
element indicated by LOPT-1.
Last out-message
pointer(LOPT)
Last
out-message
pointer(LOPT)
When THL is full
Transmit history list(THL)
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Transmit history list(THL)
Message buffer 4
Message buffer 3
Message buffer 7
Message buffer 2
Message buffer 9
Message buffer 3
Message buffer 8
Message buffer 4
Message buffer 3
Message buffer 7
Message buffer 2
Message buffer 9
Transmit history list
get pointer(TGPT)
Transmit
history
list get
pointer
(TGPT)
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