UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 294

• 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

294
Note This setting is not required when the watchdog timer is not used.
Remark
<1> to <11> in Figure 18-20 correspond to <1> to <11> in 18.8.6 (previous page).
Figure 18-20. Example of Block Erase Operation in Self Programming Mode
<2> Set no. of block to be erased
<7> Clear & restart WDT counter
<8> Execute HALT instruction
<4> Set the same value as
that of FLAPH to FLAPHC
<11> Normal termination
<1> Set erase command
(VCERR and WEPRERR flags)
<5> Set FLAPLC to 00H
<3> Set FLAPL to 00H
<9> Check execution result
(WDTE = ACH)
(FLCMD = 03H)
Block erasure
<6> Clear PFS
to FLAPH
CHAPTER 18 FLASH MEMORY
Normal
User’s Manual U16898EJ5V0UD
Note
<10> Abnormal termination
Abnormal