STV7710WAF データシートの表示（PDF） - STMicroelectronics

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STV7710WAF

Vacuum Fluorescent Display (VFD) Driver

STMicroelectronics 

STV7710/WAF

4 CIRCUIT DESCRIPTION

CIRCUIT DESCRIPTION

4.1

Pin description

Table 5: STV7710/WAF pin description

Symbol

OUT(01-96)

VSSP

VPP

BLK

POC

F/R

VCC

VSSLOG

VSSSUB

CLK

STB

DATA_A

DATA_B

TEST

Function

Output

Ground

Supply

Input

Input

Input

Supply

Ground

Ground

Input

Input

Input/output

Input/output

Input

Description

Power output

Ground of power outputs

High voltage supply of power outputs

Blanking input

Power output control input

Selection of shift direction

5V logic supply

Logic ground

Substrate ground

Clock of data shift register

Latch of data to outputs

Shift register input

Shift register output

Test input pin

4.2 Data bus configuration

Table 6: STV7710/WAF data bus configuration

F/R Input

Data shift

Output

CLK 01 02 03 04 05 06 ... 91 92 93 94 95 96

H DATA_A Output 01 02 03 04 05 06

L DATA_B Output 96 95 94 93 92 91

91 92 93 94 95 96 DATA_B Forward

shift

06 05 04 03 02 01 DATA_A Reverse

shift

This table describes the position of the first data sampled by the first rising edge of the CLK signal.

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