UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 568

• 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

568
Here is an example of description of the software for setting the option bytes.
OPT
OPTION: DB
Remark Referencing of the option byte is performed during reset processing. For the reset processing timing,
see CHAPTER 22 RESET FUNCTION.
CSEG
DB
DB
DB
DB
AT 0080H
30H
00H
00H
00H
00H
; Enables watchdog timer operation (illegal access detection operation),
; Window open period of watchdog timer: 50%,
; Overflow time of watchdog timer: 2
; Internal low-speed oscillator can be stopped by software.
; 1.59 V POC mode
; Reserved area
; Reserved area
; On-chip debug operation disabled
CHAPTER 25 OPTION BYTE
User’s Manual U17260EJ6V0UD
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