UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 343

• 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

Figure 14-24 shows an example of the continuous transmission processing flow.
Remark TXB6n:
ASIF6n:
TXBF6n: Bit 1 of ASIF6n (transmit buffer data flag)
TXSF6n: Bit 0 of ASIF6n (transmit shift register data flag)
n = 0, 1
Figure 14-24. Example of Continuous Transmission Processing Flow
CHAPTER 14 SERIAL INTERFACES UART60 AND UART61
Transmit buffer register 6n
Asynchronous serial interface transmission status register 6n
executed necessary
completion interrupt
executed necessary
number of times?
number of times?
Write TXB6n.
Transmission
Set registers.
Write TXB6n.
Read
TXBF6n = 0?
Transfer
Transfer
occurs?
ASIF6n
User’s Manual U17554EJ4V0UD
Yes
No
No
Yes
No
Yes
No
Yes
transmission processing
Completion of
Read
TXSF6n = 0?
ASIF6n
Yes
Yes
No
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