H8SLASH3003 datasheet(29/715 Pages) RENESAS

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1.4 Pin Functions

Table 1-3 summarizes the pin functions.

Table 1-3 Pin Functions

Pin No.

Type

Symbol

QFP-112

I/O

Name and Function

Power

VCC

1, 44, 76

Input

Power: For connection to the power supply

(+5 V). Connect all VCC pins to the +5-V system

power supply.

VSS

10, 26, 35, Input

Ground: For connection to ground (0 V).

53, 73, 99

Connect all VSS pins to the 0-V system power

supply.

Clock

XTAL

Input

For connection to a crystal resonator.

For examples of crystal resonator and external

clock input, see section 16, Clock Oscillator.

EXTAL

Input

For connection to a crystal resonator or input of

an external clock signal. For examples of

crystal resonator and external clock input, see

section 16, Clock Pulse Generator.

Output System clock: Supplies the system clock to

external devices

Operating

MD2 to MD0 83 to 81

Input

Mode 2 to mode 0: For setting the operating

mode control

mode, as follows

MD2

MD1

MD0

Operating Mode

000—

Mode 1

Mode 2

Mode 3

Mode 4

101—

110—

111—

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