Datasheet > LM1882CN

LM1882CN

更新时间： 2024-01-17 03:05:48

品牌	Logo	应用领域
美国国家半导体 - NSC		商用集成电路光电二极管
页数	文件大小	规格书
16页	343K
描述
Programmable Video Sync Generator

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技术参数
数据手册

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LM1882CN 技术参数

生命周期：	Obsolete	包装说明：	SOP,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.65	商用集成电路类型：	CONSUMER CIRCUIT
JESD-30 代码：	R-PDSO-G20	长度：	12.8 mm
功能数量：	1	端子数量：	20
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
认证状态：	Not Qualified	座面最大高度：	2.65 mm
最大压摆率：	1.6 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	4.5 V	表面贴装：	YES
温度等级：	MILITARY	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	7.5 mm	Base Number Matches：	1

LM1882CN 数据手册

Signal Specification (Continued)

DS100232-5

FIGURE 2. Vertical Waveform Specification

DS100232-12

FIGURE 3. Equalization/Serration Interval Programming

HORIZONTAL AND VERTICAL GATING SIGNALS

Addressing Logic

Horizontal Drive and Vertical Drive outputs can be utilized as

general purpose Gating Signals. Horizontal and Vertical Gat-

ing Signals are available for use when Composite Sync and

Blank signals are selected and the value of Bit 2 of the Sta-

tus Register is 0. The Vertical Gating signal will change in the

same manner as that specified for the Vertical Blank.

The register addressing logic is composed of two blocks of

logic. The first is the address register and counter (AD-

DRCNTR), and the second is the address decode (AD-

DRDEC).

ADDRCNTR LOGIC

Horizontal Gating Signal Width

[REG(16) − REG(15)] x

ckper

Addresses for the data registers can be generated by one of

two methods. Manual addressing requires that each byte of

each register that needs to be loaded needs to be ad-

dressed. To load both bytes of all 19 registers would require

a total of 57 load cycles (19 address and 38 data cycles).

Auto Addressing requires that only the initial register value

be specified. The Auto Load sequence would require only 39

load cycles to completely program all registers (1 address

and 38 data cycles). In the auto load sequence the low order

byte of the data register will be written first followed by the

high order byte on the next load cycle. At the time the High

Byte is written the address counter is incremented by 1. The

counter has been implemented to loop on the initial value

loaded into the address register. For example: If a value of 0

was written into the address register then the counter would

count from 0 to 18 before resetting back to 0. If a value of 15

was written into the address register then the counter would

count from 15 to 18 before looping back to 15. If a value

greater than or equal to 18 is placed into the address register

the counter will continuously loop on this value. Auto ad-

dressing is initiated on the falling edge of LOAD when AD-

DRDATA is 0 and LHBYTE is 1. Incrementing and loading of

data registers will not commence until the falling edge of

LOAD after ADDRDATA goes to 1. The next rising edge of

Vertical Gating Signal Width:

[REG(18) − REG(17)] x

hper

CURSOR POSITION AND VERTICAL INTERRUPT

The Cursor Position and Vertical Interrupt signal are avail-

able when Composite Sync and Blank signals are selected

and Bit 2 of the Status Register is set to the value of 1. The

Cursor Position generates a single pulse of n clocks wide

during every line that the cursor is specified. The signals are

generated by logically ORing (ANDing) the active LOW

(HIGH) signals specified by the registers used for generating

Horizontal and Vertical Gating signals. The Vertical Interrupt

signal generates a pulse during the vertical interval speci-

fied. The Vertical Interrupt signal will change in the same

manner as that specified for the Vertical Blanking signal.

Horizontal Cursor Width [REG(16) − REG(15)] x ckper

Vertical Cursor Width [REG(18) − REG(17)] x hper

Vertical Interrupt Width [REG(14) − REG(13)] x hper

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1 2 3 456 7 8...16

中文翻译

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与LM1882CN相关器件

型号	品牌	获取价格	描述	数据表
LM1882E/883	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, CQCC20, CERAMIC, LCC-20
LM1882EV	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PQCC20, PLASTIC, LCC-20
LM1882J/883	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, CDIP20, CERAMIC, DIP-20
LM1882L	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, CQCC20, CERAMIC, LCC-20
LM1882P	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PDIP20, PLASTIC, DIP-20
LM1882-R	NSC	获取价格	Programmable Video Sync Generator
LM1882RCM	ETC	获取价格	TV/Video Sync Circuit
LM1882-RCM	NSC	获取价格	Programmable Video Sync Generator
LM1882-RCMX	TI	获取价格	SPECIALTY CONSUMER CIRCUIT, PDSO20, SOIC-20
LM1882RCN	ETC	获取价格	TV/Video Sync Circuit

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