UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 92

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

4.2.4 Port 3
mode register 3 (PM3). When using port 3, internal pull-up resistors can be connected in 1-bit units by using pull-
up resistor option register 3 (PU3).
90
This is an 8-bit I/O port with output latches. Port 3 can be set in the input or output mode in 1-bit units via port
Alternate functions include use as a real-time output port.
RESET input sets port 3 to input mode.
Figure 4-5 shows the block diagram of port 3.
PU: Pull-up resistor option register
PM: Port mode register
RD: Read signal of port 3
WR: Write signal of port 3
WR
WR
WR
RD
PORT
PU
PM
PM30 to PM37
PU30 to PU37
(P30 to P37)
Output latch
Alternate
function
Figure 4-5. Block Diagram of P30 to P37
CHAPTER 4 PORT FUNCTIONS
User’s Manual U13029EJ7V1UD
Selector
V
DD
P-ch
P30/RTP0 to
P37/RTP7