UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 56

• 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

56
P4:
PU4:
PM4:
RD:
WR××: Write signal
WR
WR
WR
RD
PORT
PU
PM
Port register 4
Pull-up resistor option register 4
Port mode register 4
Read signal
PM40, PM45
PU40, PU45
Output latch
(P40, P45)
PM4
PU4
P4
Figure 4-6. Block Diagram of P40 and P45
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16898EJ5V0UD
V
DD
P-ch
P40, P45