Datasheet > LMA2009JC45

LMA2009JC45

更新时间： 2024-02-28 18:13:09

品牌	Logo	应用领域
逻辑 - LOGIC		/
页数	文件大小	规格书
7页	191K
描述
12 x 12-bit Multiplier-Accumulator

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LMA2009JC45 技术参数

是否Rohs认证：	不符合	生命周期：	Contact Manufacturer
零件包装代码：	LCC	包装说明：	QCCJ, LDCC68,1.0SQ
针数：	68	Reach Compliance Code：	compliant
风险等级：	5.78	其他特性：	2 X 12 BIT DATA INPUT BUS; ICC SPECIFIED AT 5MHZ
边界扫描：	NO	最大时钟频率：	22.22 MHz
外部数据总线宽度：	12	JESD-30 代码：	S-PQCC-J68
JESD-609代码：	e0	长度：	24.2316 mm
低功率模式：	NO	湿度敏感等级：	3
端子数量：	68	最高工作温度：	70 °C
最低工作温度：		输出数据总线宽度：	27
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装等效代码：	LDCC68,1.0SQ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	225
电源：	5 V	认证状态：	Not Qualified
座面最大高度：	5.08 mm	子类别：	DSP Peripherals
最大压摆率：	25 mA	最大供电电压：	5.25 V
最小供电电压：	4.75 V	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	J BEND	端子节距：	1.27 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	24.2316 mm	uPs/uCs/外围集成电路类型：	DSP PERIPHERAL, MULTIPLIER ACCUMULATOR/SUMMER
Base Number Matches：	1

LMA2009JC45 数据手册

LMA 1009/2009

DEVICES INCORPORATED

12 x 12-bit Multiplier-Accumulator

LMA1009/2009

12 x 12-bit Multiplier-Accumulator

DEVICES INCORPORATED

FEATURES

DESCRIPTION

The LMA1009 and LMA2009 are high- Data present at the A and B input regis-

speed, low power 12-bit multiplier-accu- ters is latched on the rising edges of

mulators. They are pin-for-pin equiva- CLK A and CLK B respectively. RND,

lent to the TRW TDC1009/TMC2009 TC, ACC, and SUB controls are latched

multiplier-accumulators. The LMA1009 on the rising edge of the logical OR of

and LMA2009 are functionally identical; CLK AandCLK B. TCspecifiestheinput

they differ only in packaging. Full ambi- as two’s complement

❑ 20 ns Multiply-Accumulate Time

❑ LowPowerCMOSTechnology

❑ Replaces Fairchild TDC1009/

TMC2009

❑ Two’s Complement or Unsigned

Operands

❑ Accumulator Performs Preload,

ent temperature range operation is (TC HIGH) or unsigned magnitude

achieved by the use of advanced CMOS (TC LOW). RND, when HIGH, adds ‘1’

Accumulate, and Subtract

❑ Three-State Outputs

❑ 68-pinPLCC, J-Lead

technology.

to the most significant bit position of the

least significant half of the product. Sub-

sequent truncation of the 12 least signifi-

cant bits produces a result correctly

rounded to 12-bit precision.

The LMA1009/2009 produces the 24-bit

product of two 12-bit numbers. The

results of a series of multiplications may

be accumulated to form the sum of prod-

ucts. Accumulation is performed to The ACC and SUB inputs control accu-

27-bitprecisionwiththemultiplierprod- mulatoroperation. ACCHIGHresultsin

uct sign extended as appropriate.

addition of the multiplier product and

the accumulator contents, with the result

stored in the accumulator register on the

rising edge of CLK R. ACC and SUB

HIGH results in subtraction of the accu-

mulator contents from the multiplier

product, with the result stored in the

accumulator register. With ACC LOW

and SUB LOW, no accumulation occurs

and the next product is loaded directly

intotheaccumulatorregister. ACCLOW

and SUB HIGH is undefined.

LMA1009/2009 BLOCK DIAGRAM

11-0

B11-0

A REGISTER

B REGISTER

CLK A

CLK B

RND

ACC

SUB

The LMA1009/2009 output register (ac-

cumulator register) is divided into three

independently controlled sections. The

least significant result (LSR) and most

significant result (MSR) registers are 12

bits in length. The extended result regis-

ter (XTR) is 3 bits long.

R + A

R – A

OEX

LEX

LEM

LEL

PASS R

PRELOAD

CONTROL

LOGIC

OEM

OEL

PREL

Each output register has an independ-

ent output enable control. In addition

to providing control of the three-state

output buffers, when OEX, OEM, or

OELareHIGHandPRELisHIGH, data

can be preloaded via the bidirectional

output pins into the respective output

registers. Data present on the output

pins is latched on the rising edge of

CLK R. The interrelation of PREL and

the enable controls is summarized in

Table 1.

OEX

OEM

OEL

LEX

LEM

LEL

CLK R

ACCUMULATOR REGISTER

OEX

OEM

OEL

26-24

23-12

R11-0

Multiplier-Accumulators

03/29/2000–LDS.10/2009-L

12 3 4 5 6 7

中文翻译

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与LMA2009JC45相关器件

型号	品牌	获取价格	描述	数据表
LMA2009JC55	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, PQCC68, PLASTIC, LCC-68
LMA2009JC75	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, PQCC68, PLASTIC, LCC-68
LMA2009KC45	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, CQCC68, 0.950 X 0.950 INCH, CERAMIC, LCC-68
LMA2009KC55	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, CQCC68, 0.950 X 0.950 INCH, CERAMIC, LCC-68
LMA2009KC75	ETC	获取价格	Multiplier/Accumulator
LMA2009KM55	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, CQCC68, 0.950 X 0.950 INCH, CERAMIC, LCC-68
LMA2009KM65	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, CQCC68, 0.950 X 0.950 INCH, CERAMIC, LCC-68
LMA2009KM75	LOGIC	获取价格	Multiplier Accumulator/Summer, CMOS, CQCC68
LMA2009KM95	ETC	获取价格	Multiplier/Accumulator
LMA2009KMB25	LOGIC	获取价格	Multiplier Accumulator/Summer, 12-Bit, CMOS, CQCC68, CERAMIC, LCC-68

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