MC144144

更新时间： 2024-01-09 22:15:46

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		解码器
页数	文件大小	规格书
44页	568K
描述
Enhanced Closed-Caption Decoder CMOS

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技术参数
数据手册

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MC144144 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP18,.3	Reach Compliance Code：	unknown
风险等级：	5.92	Is Samacsys：	N
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	R-PDIP-T18
JESD-609代码：	e0	端子数量：	18
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	DIP
封装等效代码：	DIP18,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	电源：	5 V
认证状态：	Not Qualified	子类别：	Other Consumer ICs
最大压摆率：	20 mA	表面贴装：	NO
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
Base Number Matches：	1

MC144144 数据手册

AC AND TIMING CHARACTERISTICS (continued)

Parameter

Conditions

Horizontal Timing

The timing of the ouput signals box

and RGB have been set to make a

centered display.

The positioning of these outputs can be adjusted in 330 ns increments by writing a

new value to the H Position Register.

Control Port Signals – Two–Wire Serial Mode (SMS = LOW, SEN = HIGH) (See Figure 10)

Clock and Data Transitions: The SCK Start Condition: A high–to–low transition of SDA with SCK high is a start condition

and SDA bus lines are normally pulled which must precede any other command.

high with a resistor. Data on the SDA

Stop Condition: A low–to–high transition of SDA with SCK high is a stop condition

bus may only change during SCK low which terminates all communications.

time periods. Data changes during

SCK high periods will indicate a start

or stop condition.

Acknowledge: All address and data

words are serially transmitted to and

from the MC144144 in eight bit words.

A ninth bit time is used for the

acknowledge.

The acknowledging device does so by pulling the SDA bus low during the ninth

bit.

Control Port Signals – Three–Wire Serial Mode (SMS = HIGH) (See Figure 11)

Three–wire bus with Clock signal on

SCK pin, Serial Data Input on SDA

pin and Serial Data Output on SDO

pin.

SEN pin LOW disabled the port, placing SDO in three–state. Signal transitions on

SCK and SDA are ignored.

SEN pin HIGH enables the port for operation.

SEN and SMS pins LOW is a hardware reset for the part. These pins must be held

low for at least 100 ns.

Serial synchronization can be established by clocking in the minimum required

SSR string of FFh, FFh, FEh. More than two bytes of FFh may be input but the

string must end with FEh.

MC144144

MOTOROLA

1 2 3 456 7 8...44

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