HT16525 データシートの表示（PDF） - Holtek Semiconductor

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HT16525

5x8 Dot Character VFD Controller & Driver

Holtek Semiconductor 

Pin Assignment

80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61

S4 1

60 G20

S5 2

59 G19

S6 3

58 G18

S7 4

57 G17

S8 5

56 G16

S9 6

55 G15

S10 7

54 G14

S11 8

53 G13

S12 9

S13 10

HT16525

52 G12

51 G11

S14 11

80 LQFP-A

40 G10

S15 12

49 G9

S16 13

48 G8

S17 14

47 G7

S18 15

46 G6

S19 16

45 G5

S20 17

44 G4

S21 18

43 G3

S22 19

42 G2

S23

20

41

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 3738 39 40

G1

HT16525

Pin Description

Pin Name

I/O

Description

Power Supply Pins

VDD

— Positive power supply for logic circuits

VH

— Power supply for VFD driver circuits

VSS

— VSS - ground pin

Microcontroller Interface Pins

CS

SCK

SI

RST

TEST

I

Chip select pin

When “Low”, the device is active.

I

Serial clock input

Shift clock input with data written on the SCK rising edge.

I

Serial data input.

The serial data is first shifted from LSB.

I

Initialize all the internal registers and commands.

All segments and digits are fixed at “Low” level.

I

When “Low” or open, the device is in normal mode.

When “High”, the device is in test mode.

Output Pins

S1~S40

O High-voltage segment output pins.

G1~G24

O High-voltage grid output pins.

AD1, AD2

O High-voltage additional data segment output pins.

P1, P2

O

General port output.

Static operation output - can drive LEDs

Oscillator Pin

OSCI

Oscillator input pin

I Connected to an external resistor and capacitor to generate the oscillation

frequency.

Rev. 1.00

3

January 18, 2012

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