UPD78F0138 NEC, UPD78F0138 Datasheet - Page 39

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

(2) Non-port pins (2/2)
AV
AV
KR0 to KR7
REGC
RESET
X1
X2
XT1
XT2
V
EV
V
EV
IC
V
DD
SS
PP
REF
SS
DD
SS
Pin Name
Input
Input
Input
Input
Input
I/O
−
−
−
−
−
−
−
−
−
−
A/D converter reference voltage input and positive power
supply for port 2
A/D converter ground potential. Make the same potential as
EV
Key interrupt input
Connecting regulator output stabilization capacitor. When
using the regulator, connect to V
recommended). When the regulator is not used, connect
directly to V
System reset input
Connecting resonator for X1 input clock
Connecting resonator for subsystem clock
Positive power supply (except for ports)
Positive power supply for ports
Ground potential (except for ports)
Ground potential for ports
Internally connected. Connect directly to EV
Flash memory programming mode setting. High-voltage
application for program write/verify. Connect to EV
normal operation mode.
SS
or V
SS
.
DD
.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U16228EJ2V0UD
Function
SS
via a capacitor (1
SS
or V
SS
SS
µ
.
or V
F:
SS
in
Input
After Reset
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Alternate Function
P70 to P77
−
−
−
−
−
−
−
−
−
−
−
−
−
−
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