UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 291

• 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

Caution Be sure to perform the series of operations described above using the user program at an
Remark
address where data is not erased or written.
<1> to <6> in Figure 18-19 correspond to <1> to <6> in 18.8.5 (previous page).
<3>
Figure 18-19. Example of Shifting to Normal Mode
FLPMC = 0FFH (inverted set value)
and changing MK0 and MK1)
<4> Check execution result
(by executing EI instruction
FLPMC = 00H (set value)
FLPMC = 00H (set value)
Shift to normal mode
<5> Enable interrupts
<1> Clear FLCMD
<6> Termination
(FLCMD = 00H)
PFCMD = A5H
(FPRERR flag)
<2> Clear PFS
CHAPTER 18 FLASH MEMORY
User’s Manual U16898EJ5V0UD
Normal
Restore the CPU clock to its setting
before the self programming
Abnormal
; Set value is invalid
; Set value is valid
; When interrupt function is used
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