UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 277

• 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

PRSELF4 PRSELF3 PRSELF2 PRSELF1 PRSELF0
Flash address pointer H
pointer H (FLAPH)
compare register
Flash address
(FLAPHC)
5
Match
Protect byte
Flash address pointer L
pointer L (FLAPL)
compare register
Flash address
Increment
(FLAPLC)
FLCMD2 FLCMD1 FLCMD0
circuit
Match
3
Flash programming command
register (FLCMD)
Figure 18-8. Block Diagram of Self Programming
Internal bus
Erase
circuit
Flash memory controller
Self programming mode
setting sequencer
Internal bus
Flash memory
circuit
Write
Flash write buffer register
Self programming command execution
HALT signal
(FLW)
circuit
Verify
Unmatch
HALT release signal
Flash programming mode
control register (FLPMC)
Self programming mode setting register
WEPRERR VCERR FPRERR
Flash status register (PFS)
Flash protect command
register (PFCMD)