UPD78320GJ-5BJ NEC, UPD78320GJ-5BJ Datasheet - Page 32

• Manufacturer Part Number: UPD78320GJ-5BJ
• Description: 16/8-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

32
3.5
Table 3-1 lists the digital input/output ports.
Each port can carry out many control operations including 8 and other bit data input/output manipulations.
Port Name
PORT FUNCTIONS
Port 3
Port 4
Port 5
Port 8
Port 2
Port 9
Port 0
Port 7
5-bit input/output
8-bit input/output
8-bit input/output
6-bit input/output
8-bit input
4-bit input/output
8-bit input/outpput
8-bit input
Function
Specifiable bit-wise for input/output.
Also specifiable for realtime output port..
Specifiable bit-wise for port pins or control pins.
Specifiable in 8-bit units for input or output.
Functions as the multiplexed address/data bus (AD0 to
AD7) in the external memory expansion mode.
Specifiable bit-wise for input or output.
Functions as the address bus (A8 to A15) in the external
memory expansion mode.
Pins which are not used as the address bus can be used
as a port.
Input port pin. Also functions as analog input to the
A/D converter.
Specifiable bit-wise for the port pin or control pin.
Specifiable bit-wise for input/output.
P90 and P91 function as RD output and WR output,
respectively, in the external memory expansion mode.
P92 and P93 function as TAS output and TMD output,
respectively, in the external memory high-speed fetch
mode.
Input port pin. Functions as an external interrupt input.
Table 3-1. Port Functions and Features
Feature
Dual-function as pins
RTP0 to RTP7
Dual-function as pins NMI,
INTP0 to INTP5, INTP6/TI
Dual-function as pins
T
SCK
Dual-function as pins
AN0 to AN7
Dual-function as pins
TO00 to TO03, TO10 to
TO11
X
PD78320, 78322
D, R
X
D, SO/SB0, SI/SB1,
––––––––
––––––––
––––––––
Remarks