HD643303x Hitachi, HD643303x Datasheet - Page 25

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

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
Symbol
V
V
XTAL
EXTAL
ø
MD
MD
RESO
STBY
CC
SS
1
0
,
Pin No.
21, 53
12, 30, 50
52
51
46
45, 44
48
57
47
I/O
Input
Input
Input
Input
Output System clock: Supplies the system clock to
Input
Input
Output Reset output: Outputs a reset signal to
Input
10
Name and Function
Power: For connection to the power supply
(+5 V). Connect all V
power supply.
Ground: For connection to ground (0 V).
Connect all V
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
0
0
01
1
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
1
MD
0
1
0
1
0
SS
pins to the 0-V system power
Operating Mode
—
Mode 1
Mode 2
Mode 3
CC
pins to the +5-V system