ML9222 データシートの表示（PDF） - Oki Electric Industry

部品番号

コンポーネント説明

メーカー

ML9222

32-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Keyscan

Oki Electric Industry 

¡ Semiconductor

FEDL9222-02

ML9222

PIN DESCRIPTIONS

Pin

1, 64

10

33

30

41

50 to 63,

65 to 67,

69 to 71,

73, 74

75, 76,

78 to 80,

2 to 6

7, 8, 9

36

35

34

27

29

42 to 49

21 to 26

16 to 20

11 to 15

Symbol

VDD

D-GND

L-GND

VCC

VREG

SEG1 to 22

SEG23 to 32

GRID1 to 3

CS

CLOCK

DATA I/O

INT

DUP/TRI

CH1 to 8

A1 to A3

B1 to B3

COL1 to 5

ROW1 to 5

Type

Description

Power supply pins.

—

Pin1 and pin64 should be connected externally.

— D-GND is ground pin for the VFD driver circuit. L-GND is ground pin for the

— logic circuit. Pins 8 and 26 should be connected externally.

O 5V output pin for internal logic portion and external logic circuit.

O Reference voltage (5V) output pin for A/D converter.

Segment (anode) signal output pins for a VFD tube.

O These pins can be directly connected to the VFD tube. External circuit is not required.

IOH£–5 mA

Segment (anode) signal output pins for a VFD tube.

O These pins can be directly connected to the VFD tube. External circuit is not required.

IOH£–10 mA

Inverted Grid signal output pins.

O For pre-driver, the external circuit is requiend.

IOL£10 mA

Chip Select input pin.

I

Data input/output operation is valid when this pin is set at a High level.

Serial clock input pin.

I

Data is input and/or output through the DATA I/O pin at the rising edge of the serial clock.

Serial data input/output pin.

I/O

Data is input to / comes out from the shift register at the rising edge of the serial clock.

Interrupt signal output to microcontroller. When any key of key matrix is pressed

O or released, key scanning is started. After the completion of the one cycle, this pin

goes to high level and keeps the high level until keyscan stop mode is selected.

Duplex/Triplex operation select input pin.

I Duplex (1/2 duty) operation is selected when this pin is set at a VCC level.

Triplex (1/3 duty) operation is selected when this pin is set at a GND level.

I Analog voltage input pin for the 8-bit A/D converter.

Input pin for the encoder type rotary switch. Each input has chattering

I

absorption function of 620ns typical.

Return inputs from the key matrix.

These pins are active low. When key matrix are in the inactive sate, these

I

pins are at high level through the internal pull-up resistors. All the inputs do

not have the cahttering absorption function for the keyscans.

Key switch scanning outputs.

Normally low level is output through these pin. When any switch of key matrix

O is depressed or released, key scanning is started and is continued until

keyscan stop mode is selected. When keyscan stop mode is selected, all

outputs of ROW1 to 5 go back to low level.

4/25

Share Link: