ML64168-GA Ver la hoja de datos (PDF) - Oki Electric Industry

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Fabricante

ML64168-GA

4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver

Oki Electric Industry 

FEDL64168-01

Semiconductor

ML64168

PIN DESCRIPTIONS

The basic functions of each pin of the ML64168 is described in Table 1.

A symbol with a slash ( / ) denotes a pin that has a secondary function.

Refer to Table 2 for secondary functions.

For Type, “ - ” denotes a power supply pin, “ I ” an input pin, “O” an output pin, and “I/O” an input-

output pin.

Table 1 Pin Descriptions ( Basic Functions )

Function

Symbol

VSS

Pin No. Pad

GP

GA,

TB

No.

32 30 30

Type

-

0V power supply

Description

VDD

67 65 65

- Positive power supply

VDD1

42 40 40

- Bias output for driving LCD (+1.5V, +1.2V* )

VDD2

44 42 42

- Bias output for driving LCD (+3.0V, +2.4V* )

Power

Supply

VDD3

VDDI

VDDL

C1

C2

45 43 43

43 41 41

31 29 29

46 44 44

47 45 45

- Bias output for driving LCD (+4.5V, +3.6V* )

- Positive power supply for I/O port interface

Positive power supply for internal logic

- ( An internally generated constant voltage is present at

this pin. )

-

Pins for connecting a capacitor for generating LCD

-

driving bias

Oscillation

XT

XT

OSC1

OSC2

69 67 67

68 66 66

66 64 64

65 63 63

I

Low-speed clock oscillation input and output pins.

O Connect to a crystal ( 32.768kHz ).

I

High-speed clock oscillation input and output pins.

O Connect to an external resistor for oscillation ( ROS ).

Test

TST1

TST2

71 69 69

72 70 70

I

Input pins for testing.

I

A pull-up resistor is internally connected to these pins.

System reset input pin.

Reset

RESET 70 68 68

I

Setting this pin to ″ L ″ level puts this device into a

reset state. Then, setting this pin to ″ H ″ level starts

executing an instruction from address 0000H.

* When the voltage regulator for LCD driver is used.

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