UPD75P3116 NEC, UPD75P3116 Datasheet - Page 12

• Manufacturer Part Number: UPD75P3116
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

12
3.4 Recommended Connection of Unused Pins
Note In case the subsystem clock is not used, set SOS.0 = 1 (on-chip feedback
P00/INT4
P01/SCK
P02/SO/SB0
P03/SI/SB1
P10/INT0 and P11/INT1
P12/TI1/TI2/INT2
P13/TI0
P20/PTO0
P21/PTO1
P22/PTO2/PCL
P23/BUZ
P30/LCDCL/MD0
P31/SYNC/MD1
P32/MD2
P33/MD3
P50/D4 to P53/D7
P60/KR0/D0 to P63/KR3/D3
S0 to S15
COM0 to COM3
S16/P93 to S19/P90
S20/P83 to S23/P80
V
BIAS
XT1
XT2
V
LC0
PP
Note
Note
to V
resistor not used).
LC2
Pin
Table 3-1. List of Unused Pin Connection
Connect to Vss or V
Individually connect to Vss or V
Connect to Vss
Connect to Vss or V
Input status
Output status : Leave open
Connect to Vss
Input status
Output status : Leave open
Leave open
Input status
Output status : Leave open
Connect to Vss
Connect to Vss only when neither of V
V
Connect to Vss or V
Leave open
Always connect to V
LC2
is used. In other cases, leave open.
Recommended connection
: Individually connect to Vss or V
: Individually connect to Vss or V
: Individually connect to Vss or V
through a resistor
DD
DD
DD
DD
directly
DD
through a resistor.
DD
DD
LC0
through a resistor
through a resistor
, V
LC1
DD
and
PD75P3116