CHAPTER 1 OVERVIEW
User’s Manual U16898EJ3V0UD
17
1.4 Pin Configuration (Top View)
20-pin plastic SSOP
V
SS
Note
P121/X1
P122/X2
P123
V
DD
RESET/P34
P31/TI010/TO00/INTP2
P30/TI000/INTP0
P41/INTP3
18
17
16
20
19
15
14
13
12
11
AV
REF
P20/ANI0
P21/ANI1
P22/ANI2
P23/ANI3
P130
P45
P44/RxD6
P43/TxD6/INTP1
P42/TOH1
1
2
3
4
5
6
7
8
9
10
P40
Note
In the 78K0S/KA1+, V
SS
functions alternately as the ground potential of the A/D converter. Be sure to
connect V
SS
to a stabilized GND (= 0 V).
ANI0 to ANI3:
Analog input
RESET:
Reset
AV
REF
:
Analog reference voltage
RxD6:
Receive data
INTP0 to INTP3:
External interrupt input
TI000, TI010:
Timer input
P20 to P23:
Port 2
TO00, TOH1:
Timer output
P30, P31, P34:
Port 3
TxD6:
Transmit data
P40 to P45:
Port 4
V
DD
: Power
supply
P121 to P123:
Port 12
V
SS
: Ground
P130:
Port 13
X1, X2:
Crystal oscillator (X1 input clock)