UPD78320GJ-5BJ NEC, UPD78320GJ-5BJ Datasheet - Page 15

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

1.3
The pin input/output circuits, partly simplified, are shown in Table 1-1 and Figure 1-1.
PIN INPUT/OUTPUT CIRCUITS AND RECOMMENDED CONNECTION OF UNUSED PINS
P00 to P07/RTP0 to RTP7
P20/NMI
P21 to P26/INTP0 to INTP5
P27/INTP6/TI
P30/T
P31/R
P32/SO/SB0
P33/SI/SB1
P34/SCK
P40 to P47/AD0 to AD7
P50 to P57/A8 to A15
P70 to P77/AN0 to AN7
P80 to P83/TO00 to TO05
P84, P85/TO10, TO11
P90/RD
P91/WR
P92/TAS
P93/TMD
WDTO
ASTB
EA
RESET
AV
AV
NC
REF
DD
, AV
X
X
D
D
SS
Pin
Table 1-1. I/O Circuit Types of Pins and their Recommended
Connection Methods when Unused
Input/Output
Circuit Type
––
––
––
5
2
5
8
5
9
5
5
3
4
1
2
Input mode
Output mode : Leave open
Connected to V
Input mode
Output mode : Leave open
Connected to V
Input mode
Output mode : Leave open
Leave open
Connected to V
Connected to V
Connected to V
Recommended Connection Method
: Individually connected to V
: Individually connected to V
: Individually connected to V
SS
SS
SS
DD
SS
resistor
resistor
resistor
(can also be left open)
––
––
DD
DD
DD
PD78320, 78322
or V
or V
or V
SS
SS
SS
via
via
via
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