UPD78F4046GC-3B9 NEC, UPD78F4046GC-3B9 Datasheet - Page 14

• Manufacturer Part Number: UPD78F4046GC-3B9
• Description: 16-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

5.3 Pin I/O Circuits and Recommended Connection of Unused Pins
5-1.
Remark Since type numbers are standardized among the 78K Series products, they are not sequential in some
14
P00/RTP0 to P03/RTP3
P10/TO20
P11/TO21
P12/TO30
P13/TO31
P20/NMI
P21/INTP0/TO00
P22/INTP1/TO01
P23/INTP2/TO02
P24/INTP3/TO03
P25/INTP4
P26/INTP5/TI2
P27/INTP6/TI3
P30/TO10
P31/TO11
P32/RxD/SI1
P33/TxD/SO1
P34/ASCK/SCK1
P35/RxD2/SI2
P36/TxD2/SO2
P37/ASCK2/SCK2
P40/AD0 to P47/AD7
P50/AD8 to P57/AD15
P60/A16 to P63/A19
P70/ANI0 to P77/ANI7
P80/ANI8 to P87/ANI15
P90/RD
P91/LWR
P92/HWR
P93/ASTB
P94/WAIT
MODE
RESET
CLKOUT
AV
AV
AV
The input/output circuit type of each pin and recommended connection of unused pins are shown in Table
For the I/O circuit configuration of each type, refer to Figure 5-1.
REF
SS
DD
Pin Name
models (i.e., some circuits are not provided).
Table 5-1. Types of Pin I/O Circuits and Recommended Connection of Unused Pins
I/O Circuit Type
2
5-A
5-A
5
8
5
8
5
8
9
5-A
1
2
3
–
Output
Input
Input
Input
I/O
I/O
I/O
I/O
–
Data Sheet U11447EJ2V0DS00
Input: Independently connect to V
Output: Leave open.
Connect to V
Input: Independently connect to V
Output: Leave open.
Connect to V
Input: Independently connect to V
Output: Leave open.
Leave open.
Connect to V
Connect to V
Recommended Connection of Unused Pins
SS
SS
SS
DD
.
.
.
.
–
DD
DD
DD
or V
or V
or V
SS
SS
SS
via a resistor.
via a resistor.
via a resistor.
PD78F4046