MSM63188A-XXXGS-BK Ver la hoja de datos (PDF) - Oki Electric Industry

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MSM63188A-XXXGS-BK

4-Bit Microcontroller with Built-in 1024-Dot Matrix LCD Drivers and Melody Circuit, Operating at 0.9 V (Min.)

Oki Electric Industry 

¡ Semiconductor

MSM63188A

PIN DESCRIPTIONS

The basic functions of each pin of the MSM63188A are 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 Pin

VDD

73

VSS

62

VDD1

63

VDD2

64

VDD3

65

VDD4

66

VDD5

67

C1

68

Power

C2

69

Supply

VDDI

87

VDDL

74

VDDH

70

CB1

71

CB2

72

XT0

79

XT1

78

Oscillation

OSC0

76

OSC1

75

TST1

81

Test

TST2

80

Reset RESET

77

MD

84

Melody

MDB

85

Type

—

—

—

Description

Positive power supply

Negative power supply

Power supply pins for LCD bias (internally generated).

Capacitors (0.1 mF) should be connected between these pins and

VSS.

— Capacitor connection pins for LCD bias generation.

— A capacitor (0.1 mF) should be connected between C1 and C2.

Positive power supply pin for external interface

—

(power supply for input, output, and input-output ports)

Positive power supply pin for internal logic (internally generated).

—

A capacitor (0.1 mF) should be connected between this pin and VSS.

Voltage multiplier pin for power supply backup (internally generated).

—

A capacitor (1.0 mF) should be connected between this pin and VSS.

— Pins to connect a capacitor for voltage multiplier.

— A capacitor (1.0 mF) should be connected between CB1 and CB2.

I

Low-speed clock oscillation pins.

A 32.768 kHz crystal should be connected between XT0 and XT1,

O

and CG (5 to 25 pF) should be connected between XT0 and VSS.

I

High-speed clock oscillation pins.

A ceramic resonator and capacitors (CL0, CL1) or external

O

oscillation resistor (ROS) should be connected to these pins.

I

Input pins for testing.

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

I

The user cannot use these pins.

Reset input pin.

Setting this pin to "H" level puts this device into a reset state.

I Then, setting this pin to "L" level starts executing an instruction

from address 0000H.

A pull-down resistor is internally connected to this pin.

O Melody output pin (non-inverted output)

O Melody output pin (inverted output)

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