Datasheet

Section 1 Overview
Rev. 6.00 Mar. 24, 2006 Page 9 of 412
REJ09B0142-0600
1.4 Pin Functions
Table 1.1 Pin Functions
Pin No.
H8/3664 H8/3664N
Type Symbol
FP-64E,
FP-64A
FP-48F,
FP-48B DP-42S FP-64E I/O Functions
Power source
pins
V
CC
12 10 14 12 Input Power supply pin. Connect this pin to the
system power supply.
V
SS
9 7 11 9 Input Ground pin. Connect all these pins to the
system power supply (0V).
AV
CC
3 1 5 3 Input Analog power supply pin for the A/D
converter. When the A/D converter is not
used, connect this pin to the system
power supply.
V
CL
6 4 8 6 Input Internal step-down power supply pin.
Connect a capacitor of around 0.1 µF
between this pin and the Vss pin for
stabilization.
Clock pins OSC1 11 9 13 11 Input
OSC2 10 8 12 10 Output
These pins connect to a crystal or ceramic
resonator for system clocks, 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.
X1 5 3 7 5 Input For connection to a 32.768 kHz crystal
resonator for subclocks.
See section 5, Clock Pulse Generators,
for a typical connection.
X2 4 2 6 4 Output
System control RES 7 5 9 7 Input Reset pin. When this driven low, the chip
is reset.
TEST 8 6 10 8 Input Test pin. Connect this pin to Vss.