HD6432120 datasheet(45/843 Pages) RENESAS

Part #	HD6432120

Description	Single-Chip Microcomputer

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Manufacturer	RENESAS [Renesas Technology Corp]

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21

1.3.3

Pin Functions

Table 1.4 summarizes the functions of the H8S/2128 Series and H8S/2124 Series pins.

Table 1.4

Pin Functions

Pin No.

Type

Symbol

DP-64S

FP-64A

TFP-80C

I/O

Name and Function

Power

supply

VCC1,

VCC2

14, 39

6, 31

6, 39

Input

Power supply: For connection to

the power supply. All VCC1 and

VCC2 pins should be connected to

the system power supply.

VSS

16, 48

8, 40

8, 9, 10,

12, 15, 24,

29, 31, 34,

45, 49, 50,

51, 55, 66,

70, 73, 76

Input

Ground: For connection to the

power supply (0 V). All VSS pins

should be connected to the system

power supply (0 V).

Clock

XTAL

17

9

11

Input

Connected to a crystal oscillator.

See section 21, Clock Pulse

Generator, for typical connection

diagrams for a crystal oscillator and

external clock input.

EXTAL

18

10

13

Input

Connected to a crystal oscillator.

The EXTAL pin can also input an

external clock. See section 21,

Clock Pulse Generator, for typical

connection diagrams for a crystal

oscillator and external clock input.

ø

7

63

79

Output System clock: Supplies the

system clock to external devices.

EXCL

7

63

79

Input

External subclock input: Input a

32.768 kHz external subclock.

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