7
1.3.2
Pin Functions
Table 1-2 outlines the pin functions of the H8/3937 Series and H8/3937R Series.
Table 1-2
Pin Functions
Pin No.
Type
Symbol
TFP-100B
TFP-100G
I/O
Name and Functions
Power
source pins
V
CC
12
52
Input
Power supply:
All V
pins should be
connected to the system power supply.
V
SS
11
51
Input
Ground:
All V
pins should be connected
to the system power supply (0 V).
AV
CC
99
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
8
Input
Analog ground:
This is the A/D converter
ground pin. It should be connected to the
system power supply (0V).
Clock pins
OSC
1
OSC
2
10
Input
These pins connect to a crystal or
ceramic oscillator, or can be used to input
an external clock. See section 4, Clock
Pulse Generators, for a typical connection
diagram.
9
Output
DX
1
DX
2
85
Input
These pins connect to a 76.8-kHz or
160-kHz crystal oscillator. Output See
section 4, Clock Pulse Generators, for a
typical connection diagram.
84
System
control
RES
13
Input
Reset:
When this pin is driven low, the chip
is reset
RESO
28
Output
Reset output:
Outputs the CPU internal
reset signal.
TEST
TESTD
TESTA9H
86
83
34
Input
Test pins:
These pins are reserved and
cannot be used. They should be connected
to V
SS
.
Test pins:
These pins are reserved and
cannot be used. They should be left open.
TEST20 to
TEST24
TEST43
65 to
69
64
Output