LC75741W(1995) データシートの表示（PDF） - SANYO -> Panasonic

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LC75741W
(Rev.:1995)

1/2 Duty VFD Driver for Frequency Displays

SANYO -> Panasonic 

Block Diagram

LC75741E, 75741W

Pin Functions

Pin

VFL

VDD

VSS

OSCI,

OSCO

Pin No.

3

60

57

59

58

BLK

61

CL

DI

CE

G1, G2

S1 to S53

63

64

62

1, 2

56 to 4

I/O

Function

— Driver block power supply. A voltage of between 8.0 and 18.0 V must be supplied.

— Logic block power supply. A voltage of between 4.5 and 5.5 V must be supplied.

— Power supply. Must be connected to ground.

I/O Oscillator connections. An oscillator circuit is formed by connecting an external resistor and capacitor at these pins.

Display off control input

I

BLK = low (VSS): Display off (S1 to S53, G1 and G2 = low)

BLK = high (VDD): Display on

Note that serial data transfers are still allowed when display is turned off using this pin.

Serial data transfer inputs. Connect to the system microcontroller.

CL: Synchronization clock

I

DI: Transfer data

CE: Chip enable

O Digit outputs. The frame frequency fO is fOSC/4096 Hz.

O Segment outputs for displaying the display data transferred by serial data input.

No. 4965-4/10

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