UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 101

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

5.2.5 Port 5
port mode register 5 (PM5). Use of an on-chip pull-up resistor can be specified in 1-bit units using pull-up resistor
option register 5 (PU5).
Port 5 is 4-bit I/O port with an output latch. Port 5 can be set to the input mode or output mode in 1-bit units using
Reset signal generation sets port 5 to input mode.
Figure 5-10 shows a block diagram of port 5.
P5:
PU5:
PM5:
RD:
WR××: Write signal
WR
WR
WR
RD
PORT
Read signal
Port register 5
Pull-up resistor option register 5
Port mode register 5
PM
PU
PM50 to PM53
PU50 to PU53
(P50 to P53)
Output latch
PM5
PU5
P5
Figure 5-10. Block Diagram of P50 to P53
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17554EJ4V0UD
Selector
EV
DD
P-ch
P50 to P53
101