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1.4
Pin Functions
Table 1-1 Pin Functions
Type
Symbol
Power
V
CC
source pins
V
SS
AV
CC
V
CL
Clock pins
OSC1
OSC2
RES
System
control
TEST
NMI
Interrupt
pins
IRQ0,
IRQ3
WKP0 to
WKP5
Pin No.
FP-64E
FP-48F
12
10
9
7
3
1
6
4
11
9
10
8
7
5
8
6
35
25
51, 54
37, 40
13, 14,
11 to 16
19 to 22
I/O
Functions
Input
Power supply pin. Connect this pin
to the system power supply.
Input
Ground pin. Connect all these pins
to the system power supply(0V).
Input
Analog power supply pin for the A/D
converter. When the A/D converter
is not used, connect all this pin to
the system power supply.
Input
Internal step-down power supply
pin. Connect a capacitor of around
0.1µF between this pin and the Vss
pin for stabilization.
Input
These pins connect to a crystal or
ceramic oscillator for system clocks,
Output
or can be used to input an external
clock.
These pins can be used to input an
external clock. See section 5, Clock
Pulse Generators, for a typical
connection.
Input
Reset pin. When this driven low, the
chip is reset.
Input
Test pin. Connect this pin to Vss.
Input
Non-maskable interrupt request
input pin.
Input
External interrupt request input
pins. Can select the rising or falling
edge.
Input
External interrupt request input
pins. Can select the rising or falling
edge.
Rev. 1.0, 03/01, page
5
280
of
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