UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 282

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

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(4) Flash programming command register (FLCMD)
2. Operating conditions of VCERR flag
3. Operating conditions of WEPRERR flag
<Reset conditions>
<Setting conditions>
<Reset conditions>
<Setting conditions>
<Reset conditions>
• If a value other than the inverted value of the value to be set to FLPMC is written by the first store instruction
• If the first store instruction operation after <3> is on a peripheral register other than FLPMC
• If a value other than the value to be set to FLPMC (value written in <2>) is written by the first store instruction
• If 0 is written to the FPRERR flag
• If the reset signal is generated
• Erasure verification error
• Internal writing verification error
• When 0 is written to the VCERR flag
• When the reset signal is generated
• If the area specified by the protect byte to be protected from erasing or writing is specified by the flash
• If 1 is written to a bit that has not been erased (a bit for which the data is 0).
• When 0 is written to the WEPRERR flag
• When the reset signal is generated
This register is used to specify whether the flash memory is erased, written, or verified in the self programming
mode.
This register is set with a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
after <2>
after <3>
Remark The numbers in angle brackets above correspond to the those in (2) Flash protect command
If VCERR is set, it means that the flash memory has not been erased or written correctly. Erase or write the
memory again in the specified procedure.
Remark The VCERR flag may also be set if an erase or write protect error occurs.
address pointer H (FLAPH) and a command is executed to this area
register (PFCMD).
CHAPTER 18 FLASH MEMORY
User’s Manual U16898EJ5V0UD