UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 148

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.4.1 Hardware Configuration
108
The port 2 hardware configuration is shown in Figure 5-22.
* P20 and P21 do not have the circuitry enclosed by the dotted line.
Internal
Bus
WR
RD
RD
RD
PUO
PUO
P2n
P27
Figure 5-22 Block Diagram of P20 to P24, P26 and P27 (Port 2)
Various Interrupt
Control Signals
3-Wire Serial
I/O Mode 0
SI0 Input
CHAPTER 5 PORT FUNCTIONS
Pull-Up Resistor Option Register
Detection
Circuit
Edge
PUO2
V
DD
P2n
n = 0-4, 6
P27
*