HD6433397F datasheet(49/747 Pages) RENESAS

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Pin Functions: Table 1.3 gives a concise description of the function of each pin.

Table 1.3

Pin Functions

Pin No.

Type

Symbol

FP-80A,

TFP-80C

CP-84,

CG-84

I/O

Name and Function

Power

8, 47

19, 60

Power: Connected to the power

supply.

Connect both V

CC pins to the system

power supply.

12, 56,

2, 4, 23,

24, 41,

64, 70

Ground: Connected to ground (0 V).

Connect all V

SS pins to system ground

(0 V).

Clock

XTAL

Crystal: Connected to a crystal

oscillator. The crystal frequency should

be the same as the desired system

clock frequency. If an external clock is

input at the EXTAL pin, a reverse-

phase clock should be input at the

XTAL pin.

EXTAL

External crystal: Connected to a

crystal oscillator or external clock. The

frequency of the external clock should

be the same as the desired system

clock frequency. See section 6.2,

Oscillator Circuit, for examples of

connections to a crystal and external

clock.

System clock: Supplies the system

clock to peripheral devices.

System control

RES

112

Reset: A low input causes the chip to

reset.

STBY

718

Standby: A transition to the hardware

standby mode (a power-down state)

occurs when a low input is received at

the

STBY pin.

Address bus

15 to A 0

48 to 55,

57 to 64

61 to 63,

65 to 69,

71 to 78

Address bus: Address output pins.

Data bus

7 to D0

72 to 65

3, 1,

84 to 79

I/O

Data bus: 8-bit bidirectional data bus.

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