UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 300

• 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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Note This setting is not required when the watchdog timer is not used.
Remark
<1> to <10> in Figure 18-22 correspond to <1> to <10> in 18.8.8 (previous page).
Figure 18-22. Example of Byte Write Operation in Self Programming Mode
<4> Set data to be written to FLW
<6> Clear & restart WDT counter
<3> Set address at which data
<1> Set byte write command
<7> Execute HALT instruction
<2> Set no. of block to be
is to be written, to FLAPL
<10> Normal termination
(VCERR and WEPRERR flags)
<8> Check execution result
(WDTE = ACH)
written, to FLAPH
(FLCMD = 05H)
<5> Clear PFS
Byte write
CHAPTER 18 FLASH MEMORY
Normal
User’s Manual U16898EJ5V0UD
Note
Abnormal
<9> Abnormal termination