Pin Functions - Hitachi H8/3032 Series Hardware Manual

1.4 Pin Functions

Table 1-3 summarizes the pin functions.
Table 1-3 Pin Functions
Type
Power
Clock
Operating
mode control
System control RES
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Symbol Pin No. I/O
V 21, 53 Input
CC
V 12, 30, 50 Input
SS
XTAL 52 Input
EXTAL 51 Input
ø 46 Output System clock: Supplies the system clock to
MD , 45, 44 Input
1
MD
0
48 Input
RESO
57 Output Reset output: Outputs a reset signal to
STBY
47 Input
Name and Function
Power: For connection to the power supply
(+5 V). Connect all V pins to the +5-V system
CC
power supply.
Ground: For connection to ground (0 V).
Connect all V pins to the 0-V system power
SS
supply.
For connection to a crystal resonator.
For examples of crystal resonator and external
clock input, see section 15, Clock Pulse
Generator.
For connection to a crystal resonator or input of
an external clock signal. For examples of
crystal resonator and external clock input, see
section 15, Clock Pulse Generator.
external devices
Mode 1 and mode 0: For setting the operating
mode, as follows
MD MD Operating Mode
1 0
0 0 —
0 1 Mode 1
01 0 Mode 2
1 1 Mode 3
Reset input: When driven low, this pin resets
the H8/3032
external devices
Standby: When driven low, this pin forces
a transition to hardware standby mode
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