MSC7170-01 데이터 시트보기 (PDF) - Oki Electric Industry

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MSC7170-01

5x7 Dot Character x 16-Digit x 2-Line Display Controller/Driver with Keyscan Function

Oki Electric Industry 

¡ Semiconductor

FEDL7170-03

MSC7170-01

PIN DESCRIPTIONS

Pin

1

2-36

37

38-39

40

41-72

73

74

75

76

Symbol

VDISP

SEG2-1 to

SEG2-35

SEG2-36

SEG1-1

SEG1-2

VSS1

SEG1-3 to

SEG1-35

SEG1-36

SEG1-21

Description

High voltage power supply

VF tube 5¥7 dot anode driver outputs. These pins may be connected directly to

the VF tube.

VF tube cursor driver output.

VF tube 5¥7 dot anode driver outputs. These pins may be connected directly to

the VF tube.

High voltage ground

VF tube 5¥7 dot anode driver outputs. These pins may be connected directly to

the VF tube.

VF tube cursor driver output.

VF tube 5¥7 dot anode driver output. This pin may be connected directly to

the VF tube.

VSS2

STANDBY

Logic supply ground.

Grid driver standby output pin. A logic high level on this output forces the grid

driver (MSC7171) into a low power standby mode.

77

DUTY

Duty cycle output pin.

78

CLOCK Grid driver clock output pin.

79

DATA

Grid driver data output pin.

80

SYNC

AC filament synchronization input pin.

81

OSCO

Oscillator output pin.

Connects to crystal (or ceramic resonator) oscillator and

82

OSCI

Oscillator input pin.

capacitor. These pins have internal feedback resistors.

83

RESET

Reset input pin.

84

SOMI

SPI data output pin. Keyscan data is shifted out on the falling edge of SCLK.

85

SCLK

SPI clock input pin. Data is shifted in on the SIMO pin on the rising edge of SCLK.

SPI data input pin. Command data is shifted in on the rising edge of SCLK.

86

SIMO

87

88

89-94

ENABLE

KBINT

COL6-1

Chip select input pin. Interface to the microprocessor is possible only when a

logic low level is applied to this pin. The SOMI output pin is tri-stated when

ENABLE is at a logic high level so that multiple devices may use the SPI network.

Interrupt request output to the microprocessor for keyscan data read out.

Keyscanning is started when any key is depressed or released. After completion

of one cycle, KBINT goes to a logic low level to indicate new keyscan data is

available. KBINT remains low until execution of Keyscan Data Output command.

Column 1-6 input pins from key switch matrix. A pull-up resistor is built in so that

the pin is in the logic high state except when a key is depressed and a logic low

level is input to the pin.

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