UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 345

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

(2) Communication operation
1. Data length: 8 bits, Parity: Even parity, Stop bit: 1 bit, Communication data: 55H
2. Data length: 7 bits, Parity: Odd parity, Stop bit: 2 bits, Communication data: 36H
3. Data length: 8 bits, Parity: None, Stop bit: 1 bit, Communication data: 87H
(a) Format and waveform example of normal transmit/receive data
Figures 14-6 and 14-7 show the format and waveform example of the normal transmit/receive data.
One data frame consists of the following bits.
• Start bit ... 1 bit
• Character bits ... 7 or 8 bits (LSB first)
• Parity bit ... Even parity, odd parity, 0 parity, or no parity
• Stop bit ... 1 or 2 bits
The character bit length, parity, and stop bit length in one data frame are specified by asynchronous serial
interface operation mode register 0 (ASIM0).
Start
Start
Start
Figure 14-7. Example of Normal UART Transmit/Receive Data Waveform
D0
Start
D0
bit
D0
Figure 14-6. Format of Normal UART Transmit/Receive Data
D0
D1
D1
D1
D1
CHAPTER 14 SERIAL INTERFACE UART0
D2
D2
D2
D2
User’s Manual U17260EJ6V0UD
D3
D3
Character bits
1 data frame
D3
1 data frame
1 data frame
D3
1 data frame
D4
D4
D4
D5
D4
D5
D6
D5
D5
D7
D6
D6
Parity
D6
bit
D7
Parity
Stop bit
D7
Parity
Stop
Stop
Stop
Stop
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