UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 624

• 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

24.10.1 Registers used for self-programming function
(1) Flash-programming mode control register (FLPMC)
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The following three registers are used for the self-programming function.
• Flash-programming mode control register (FLPMC)
• Flash protect command register (PFCMD)
• Flash status register (PFS)
This register is used to enable or disable writing or erasing of the flash memory and to set the operation mode
during self-programming.
The FLPMC can be written only in a specific sequence (see 24.10.1 (2) Flash protect command register
(PFCMD)) so that the application system does not stop inadvertently due to malfunction caused by noise or
program hang-up.
FLPMC can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 0xH
Note Differs depending on the operation mode.
• User mode:
• On-board mode:
08H
0CH
CHAPTER 24 FLASH MEMORY
User’s Manual U17554EJ4V0UD
Note
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