Pin Functions - Hitachi H8/3637 Hardware Manual

1.3.2

Pin Functions

Table 1.2 outlines the pin functions.
Table 1.2 Pin Functions
Type Symbol
Power V
CC
source pins
V
SS
AV
CC
AV
SS
VT
ref
Clock pins OSC
1
OSC
2
X
1
X
2
RES
System
control
TEST
8
Pin No.
TFP-80F
TFP-80C FP-80B
7, 26 9, 28
3, 25 5, 27
75 77
80 2
74 76
5 7
4 6
1 3
2 4
8 10
6 8
I/O Name and Functions
Input Power supply: All V
connected to the system power supply
(+5 V)
Input Ground: All V
connected to the system power supply
(0 V)
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
(+5 V).
Input Analog ground: This is the A/D
converter ground pin. It should be
connected to the system power supply
(0 V).
Input DTMF generator reference level: This
is a power supply pin for the reference
level for DTMF.
Input System clock: These pins connect to a
crystal or ceramic oscillator, or can be
used to input an external clock. See
Output
section 4, Clock Pulse Generators, for a
typical connection diagram.
Input Subclock: These pins connect to a
32.768-kHz crystal oscillator. See section
4, Clock Pulse Generators, for a typical
Output
connection diagram.
Input Reset: When this pin is driven low, the
chip is reset
Input Test: This is a test pin, not for use in
applica-tion systems. It should be
connected to V
pins should be
CC
pins should be
SS
.
SS