Pin Functions - Hitachi H8S/2199 Hardware Manual

1.3.2

Pin Functions

Table 1.2 summarizes the functions of the H8S/2199 Series pins.
Table 1.2 Pin Functions
Type Symbol
Power V
CC
supply
V
SS
SV
CC
SV
SS
AV
CC
AV
SS
OV
CC
OV
SS
V
CL
Clock OSC1
OSC2
X1
X2
Pin No. I/O
56, 112 Input
57, 79, Input
110
10 Input
1 Input
36 Input
23 Input
18 Input
20 Input
81 Input
78 Input
80 Output
76 Input
75 Output
Name and Function
Power supply:
All Vcc pins should be connected to the system
power supply (+5V)
Ground:
All Vcc pins should be connected to the system
power supply (0V)
Servo power supply:
SVcc pin should be connected to the servo
analog power supply (+5V)
Servo ground:
SVss pin should be connected to the servo
analog power supply (0V)
Analog power supply:
Power supply pin for A/D converter. It should be
connected to the system power supply (+5V)
when the A/D converter is not used
Analog ground:
Ground pin for A/D converter. It should be
connected to the system power supply (0V)
OSD power supply:
V (OSD) should be connected to the OSD
CC
analog power supply (+5 V)
OSD ground:
V (OSD) should be connected to the OSD
SS
analog power supply (0 V)
Smoothing capacitor connection:
Connect 0.1-µF power-smoothing capacitance
between V and V
CL SS
Connected to a crystal oscillator. It can also
input an external clock. See section 9, Clock
Pulse Generator, for typical connection diagrams
for a crystal oscillator and external clock input
Connected to a 32.768 kHz crystal oscillator.
See section 9, Clock Pulse Generator, for typical
connection diagrams
Rev. 1.0, 02/00, page 9 of 1141