UPD784218 Datasheet, PDF (18/92 Pages) NEC – 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784218, 784218Y
6.3 Pin I/O Circuits and Recommended Connections of Unused Pins
The input/output circuit type of each pin and recommended connections of unused pins are shown in Table 6-
1.
For the input/output circuit configuration of each type, refer to Figure 6-1.
Table 6-1. Type of Pin Input/Output Circuits and Recommended Connections of Unused Pins (1/2)
Pin Name
P00/INTP0
P01/INTP1
P02/INTP2/NMI
P03/INTP3 to P06/INTP6
P10/ANI0 to P17/ANI7
P20/RxD1/SI1
P21/TxD1/SO1
P22/ASCK1/SCK1
P23/PCL
P24/BUZ
P25/SDA0^Note/SI0
P26/SO0
P27/SCL0^Note/SCK0
P30/TO0 to P32/TO2
P33/TI1, P34/TI2
P35/TI00, P36/TI01
P37/EXA
P40/AD0 to P47/AD7
P50/A8 to P57/A15
P60/A16 to P63/A19
P64/RD
P65/WR
P66/WAIT
P67/ASTB
P70/RxD2/SI2
P71/TxD2/SO2
P72/ASCK2/SCK2
P80/A0 to P87/A7
P90 to P95
P100/TI5/TO5
P101/TI6/TO6
P102/TI7/TO7
P103/TI8/TO8
P120/RTP0 to P127/RTP7
I/O Circuit Type
I/O
Recommended Connections of Unused Pins
8-N
I/O
Input: Independently connect to VSS via a resistor
Output: Leave open
9
10-K
10-L
10-K
10-L
10-K
10-L
10-K
12-E
8-N
10-M
12-E
5-A
Input
I/O
Connect to VSS or VDD
Input: Independently connect to VSS via a resistor
Output: Leave open
8-N
10-M
8-N
12-E
13-D
8-N
12-E
Note SDA0 and SCL0 are incorporated only in the µPD784218Y.
18
Data Sheet U12304EJ2V0DS00