FEDL63187B-06

1Semiconductor

ML63187B/63189B

13/36

PIN DESCRIPTIONS

The basic functions of each pin of the ML63187B, ML63189B 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)

Pin No.

Pad No.

Function

Symbol

ML63187B ML63189B ML63187B ML63189B

Type

Description

V

DD

54

56

72

82

—

Positive power supply

V

SS

43

45

61

71

—

Negative power supply

V

DD1

44

46

62

72

V

DD2

45

47

63

73

V

DD3

46

48

64

74

V

DD4

47

49

65

75

V

DD5

48

50

66

76

—

Power supply pins for LCD bias (internally

generated)

Capacitors (0.1

µF) should be connected

between these pins and V

C1

49

51

67

77

—

C2

50

52

68

78

—

Capacitor connection pins for LCD bias

generation

A capacitor (0.1

µF) should be connected

between C1 and C2.

V

DDI

70

69

83

93

—

Positive power supply pin for external interface

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

V

DDL

55

57

73

83

—

Positive power supply pin for internal logic

(internally generated)

A capacitor (0.1

µF) should be connected

between this pin and V

V

DDH

51

53

69

79

—

Voltage multiplier pin for power supply backup

(internally generated)

A capacitor (1.0

µF) should be connected

between this pin and V

CB1

52

54

70

80

—

Power

Supply

CB2

53

55

71

81

—

Pins to connect a capacitor for voltage

multiplier

A capacitor (1.0

µF) should be connected

between CB1 and CB2.

XT0

60

62

78

88

I

XT1

59

61

77

87

O

Low-speed clock oscillation pins

An option for using crystal oscillation or RC

oscillation is chosen by the mask option.

If the crystal oscillation is chosen, a crystal

should be connected between XT0 and XT1,

and capacitor (C

between XT0 and V

If the RC oscillation is chosen, external

oscillation resistor (R

between XT0 and XT1.

OSC0

57

59

75

85

I

Osci-

llation

OSC1

56

58

74

84

O

High-speed clock oscillation pins

A ceramic resonator and capacitors (C

or external oscillation resistor (R

connected to these pins.