UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 599

• 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

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 19 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 23 OPTION BYTE
User’s Manual U17554EJ4V0UD
10
/f
RL
,
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