UPD70F3102-33 NEC [NEC], UPD70F3102-33 Datasheet - Page 14

• Manufacturer Part Number: UPD70F3102-33
• Description: 32-/16-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC [NEC]

2.3 Pin I/O Circuit Types and Recommended Connection of Unused Pins
shows the schematic circuit diagram for each I/O circuit type.
14
P00/TO100, P01/TO101
P02/TCLR10, P03/TI10
P04/INTP100/DMARQ0 to
P07/INTP103/DMARQ3
P10/TO110, P11/TO111
P12/TCLR11, P13/TI11
P14/INTP110/DMAAK0 to
P17/INTP113/DMAAK3
P20/NMI
P21
P22/TXD0/SO0
P23/RXD0/SI0
P24/SCK0
P25/TXD1/SO1
P26/RXD1/SI1
P27/SCK1
P30/TO130, P31/TO131
P32/TCLR13, P33/TI13
P34/INTP130
P35/INTP131/SO2
P36/INTP132/SI2
P37/INTP133/SCK2
P40/D0 to P47/D7
P50/D8 to P57/D15
P60/A16 to P67/A23
P70/ANI0 to P77/ANI7
Table 2-1 shows the I/O circuit type of each pin and the recommended connection of unused pins, and Figure 2-1
In the case of connection to V
Table 2-1. Pin I/O Circuit Types and Recommended Connection of Unused Pins (1/2)
Pin
DD
I/O Circuit
Type
or V
5 - K
5-K
5-K
5-K
5-K
SS
5
5
2
5
5
5
5
9
Preliminary Data Sheet U13844EJ2V0DS00
via a resistor, connection of a resistor of 1 to 10 k
Input:
Output: Leave open.
Connect directly to V
Input:
Output: Leave open.
Connect directly to V
Independently connect to HV
Independently connect to HV
Recommended Connection of Unused Pins
SS
SS
.
.
DD
DD
or V
or V
SS
SS
via a resistor.
via a resistor.
is recommended.
PD70F3102-33