Datasheet

Section 1 Overview
Rev. 1.50 Sep. 18, 2007 Page 6 of 584
REJ09B0240-0150
1.4 Pin Functions
Table 1.1 Pin Functions
Pin No.
Type Symbol FP-100A FP-100U I/O Functions
Power
supply pins
Vcc 19, 67 16, 64 Input Power supply pin. Connect this pin to the
system power supply.
Vss 16, 42, 70 13, 39, 67 Input Ground pin. Ensure to connect all pins to
the system power supply (0 V).
AVcc 7 4 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.
AVss 4 1 Input Analog ground pin for the A/D converter.
Connect this pin to the system power
supply
(0 V).
VCL 13 10 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 18 15 Input
OSC2/
CLKOUT
17 14 Output
These pins connect with crystal or
ceramic resonator for the system clock, or
can be used to input an external clock.
When using the on-chip oscillator, the
system clock can be output from OSC2
pin.
See section 5, Clock Pulse Generators,
for a typical connection.
X1 12 9 Input
X2 11 8 Output
These pins connect with a 32.768 kHz
crystal resonator for the subclock. See
section 5, Clock Pulse Generators, for a
typical connection.
System
control
RES 14 11 Input Reset pin. The pull-up resistor (typ.150
kΩ) is incorporated. When driven low, the
chip is reset.
TEST 15 12 Input Test pin. Connect this pin to Vss.