Pin Functions - Renesas Hitachi H8S/2194 Series Hardware Manual

1.3.2

Pin Functions

Table 1.2 summarizes the functions of the chip's pins.
Table 1.2 Pin Functions
Type Symbol
Power Vcc
supply
Vss
SVcc
SVss
AVcc
AVss
Clock OSC1
OSC2
X1
X2
Operating MD0
mode
control
Rev. 2.0, 11/00, page 8 of 1037
Pin No. I/O
45, 70, Input
82, 109
43, 68, Input
84, 111
9 Input
2 Input
10 Input
23 Input
67 Input
69 Output
65 Input
64 Output
71 Input
Name and Function
Power supply:
All Vcc pins should be connected to the system
power supply (+5V)
Ground:
All Vss 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)
Connected to a crystal oscillator. It can also
input an external clock. See section 10, 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 10, Clock Pulse Generator, for
typical connection diagrams
Mode pins:
These pins set the operating mode. These pins
should not be changed while the MCU is in
operation