UPD78F9177 NEC, UPD78F9177 Datasheet - Page 13

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UPD78F9177

Manufacturer Part Number
UPD78F9177
Description
8-BIT SINGLE-CHIP MICROCONTROLLER
Manufacturer
NEC
Datasheet

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3.3
P00 to P05
P10, P11
P20/SCK20/ASCK20
P21/SO20/TxD20
P22/SI20/RxD20
P23/SCL0
P24/SDA0
P25/TI80/SS20
P26/TO80
P30/INTP0/TI81/CPT90
P31/INTP1/TO81
P32/INTP2/TO90
P33/INTP3/TO82/BZO90
P50 to P53
P60/ANI0 to P67/ANI7
XT1
XT2
RESET
V
IC0
IC2
PP
Notes 1. The IC2, SCL0, and SDA0 pins are available in PD78F9177Y product only.
The input/output circuit type of each pin and recommended connection of unused pins is shown in Table 3-1.
For the input/output circuit configuration of each type, refer to Figure 3-1.
Note2
Note1
Pin I/O Circuits and Recommended Connection of Unused Pins
Note1
2. 48-pin plastic TQFP (fine pitch) only.
Note1
Pin Name
Table 3-1. Type of I/O Circuit for Each Pin and Connection of Unused Pins
I/O Circuit Type
13-X
13-T
5-H
8-C
8-C
9-C
2
Data Sheet U14022EJ1V0DS00
Input
Input
Input
I/O
I/O
Input:
Output: Leave open.
Input:
Output: Leave open.
Input:
Output: Leave open.
Input:
Output: Leave open.
Input:
Output: Leave open.
Connect directly to V
Connect to V
Leave open.
Connect directly to V
Leave open.
Recommended Connection of Unused Pins
Independently connects to V
via a resistor.
Independently connects to V
resistor.
Independently connects to V
via a resistor.
Independently connects to V
resistor.
Independently connects to V
resistor.
SS0
or V
PD78F9177, 78F9177Y
SS1
DD0
SS0
.
, V
or V
DD1
SS1
or V
.
SS0
, V
DD0
DD0
DD0
SS0
DD0
SS1
, V
, V
or V
or V
or V
.
DD1
DD1
SS1
DD1
DD1
or V
or V
via a
via a
via a
SS0
SS0
, V
, V
SS1
SS1
13

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