1.3.2 Pin Functions
Table 1-2 outlines the pin functions of the H8/3864 Series.
Table 1-2 Pin Functions
Pin No.
FP-80A
Type
Symbol
TFP-80C
FP-80B
I/O
Name and Functions
Power V
CC
32
34
Input
Power supply: All V
CC
pins should be
source pins
CV
CC
26
28
connected to the system power supply.
See section 14, Power Supply Circuit.
V
SS
5
7
Input
Ground: All V
SS
pins should be
27
29
connected to the system power supply
(0 V).
AV
CC
73
75
Input
Analog power supply: This is the
power supply pin for the A/D converter.
When the A/D converter is not used,
connect this pin to the system power
supply.
AV
SS
2
4
Input
Analog ground: This is the A/D
converter ground pin. It should be
connected to the system power supply
(0V).
V
0
31
33
Output
LCD power supply: These are the
power supply pins for the LCD controller/
V
1
30
32
Input
driver. They incorporate a power supply
V
2
29
31
split-resistance, and are normally used
V
3
28
30
with V
0
and V
1
shorted.
Clock pins
OSC
1
7
9
Input
These pins connect to a
crystal or ceramic oscillator, or can be
OSC
2
6
8
Output
used to input an external clock.
See section 4, Clock Pulse
Generators, for a typical connection
diagram.
X
1
3
5
Input
These pins connect to a 32.768-kHz
or 38.4-kHz crystal oscillator.
X
2
4
6
Output
See section 4, Clock Pulse
Generators, for a typical connection
diagram.
System
RES
9
11
Input
Reset: When this pin is driven low,
control
the chip is reset
RESO
20
22
Output
Reset output: Outputs the CPU internal
reset signal.
8