MSC1215

更新时间： 2024-01-10 03:27:30

品牌	Logo	应用领域
冲电气 - OKI		转换器驱动
页数	文件大小	规格书
22页	144K
描述
17 x 2 Duplex Driver with Dimming, Keyscan and A/D Converter Function

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技术参数
数据手册

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MSC1215 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP,	针数：	42
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.84
数据输入模式：	SERIAL	接口集成电路类型：	VACUUM FLUORESCENT DISPLAY DRIVER
JESD-30 代码：	R-PDIP-T42	长度：	51.98 mm
复用显示功能：	NO	功能数量：	1
区段数：	17	端子数量：	42
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	座面最大高度：	5.08 mm
最大供电电压：	18 V	最小供电电压：	8 V
表面贴装：	NO	技术：	BICMOS
温度等级：	INDUSTRIAL	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	15.24 mm	最小 fmax：	0.25 MHz
Base Number Matches：	1

MSC1215 数据手册

¡ Semiconductor

MSC1215-xx

Keyscan

To keep a scanning noise to a minimum, a scanning of the key switch starts only when a key is

pushed down or released. The scanning stops when CS input turns to "L" from "H" after sending

CS pulses two times and display data.

[Key Matrix of COL Input and ROW Output]

ROW1

S11

ROW2

S21

ROW3

S31

COL1

COL2

COL3

COL4

S12

S13

S14

S22

S23

S24

S32

S33

S34

A/D Conversion

The IC has a built-in 6-ch ¥ 6-bit A/D converter.

As shown in the circuit below, the V output pin is connected to a variable resistor forming a

REF

voltage divider and the divided analog voltage is used to input into the CH1 to CH6 pins.

[Circuit Example]

V_REF

Variable

CH1

Resistor

PWM Dimming

Lamp PWM signal is input to the VD pin and converted to VF display PWM signal by the PWM

conversion circuit.

The conversion table is mark-programmable.

Note: The duty cycle of the lamp PWM signal is measured with a reference point of the

threshold voltage of the VD input pin. The threshold voltage changes due to process

parameterdeviation. Therefore,thePWMconversionerrorincreasesastherise/falltime

of the lamp PWM increases.

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