UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 45

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

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

2.2.3 P20 to P26 (Port 2)
and the timer I/O pins.
2.2.4 P30 to P37 (Port 3)
2.2.5 P40 to P47 (Port 4)
These pins constitute a 7-bit I/O port, port 2. In addition, these pins are also used as the serial interface I/O pins,
Port 2 can be set in the following operation modes in 1-bit units.
(1) Port mode
(2) Control mode
These pins constitute an 8-bit I/O port, port 3. In addition, they also function as a real-time output port.
Port 3 can be set in the following operation modes in 1-bit units.
(1) Port mode
(2) Control mode
These pins constitute an 8-bit I/O port, port 4. In addition, they also function as an address/data bus.
Port 4 can be set in the following operation modes in 1-bit units.
(1) Port mode
(2) Control mode
In this mode, P20 to P26 function as a 7-bit I/O port which can be set to input or output in 1-bit units by using
port mode register 2 (PM2). An internal pull-up resistor can be used if so specified by pull-up resistor option
register 2 (PU2).
In this mode, P20 to P26 function as the serial interface I/O pins, and timer I/O pins.
(a) RxD00, RxD01, TxD00, TxD01
(b) TI50 to TI52
(c) TO50 to TO52
In this mode, P30 to P37 function as an 8-bit I/O port which can be set to input or output in 1-bit units by using
port mode register 3 (PM3). An internal pull-up resistor can be used if so specified by pull-up resistor option
register 3 (PU3).
In this mode, P30 to P37 are used as a real-time output port (RTP0 to RTP7) that outputs data in
synchronization with a trigger.
In this mode, P40 to P47 function as an 8-bit I/O port which can be set to input or output in 1-bit units by using
port mode register 4 (PM4). An internal pull-up resistor can be used if so specified by pull-up resistor option
register 4 (PU4).
In this mode, P40 to P47 function as the address/data bus pins (AD0 to AD7) in the external memory expansion
mode.
Serial data I/O pins of the serial interface.
External count clock input pins of 8-bit timer/event counters 50 to 52.
Output pins of 8-bit timer/event counters 50 to 52.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U13029EJ7V1UD
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