Datasheet > LMA2010JI25

LMA2010JI25

更新时间： 2024-02-09 09:08:34

品牌	Logo	应用领域
逻辑 - LOGIC		输入元件外围集成电路
页数	文件大小	规格书
7页	385K
描述
Multiplier Accumulator/Summer, 16-Bit, CMOS, PQCC68, PLASTIC, LCC-68

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LMA2010JI25 技术参数

生命周期：	Obsolete	零件包装代码：	LCC
包装说明：	QCCJ,	针数：	68
Reach Compliance Code：	unknown	风险等级：	5.69
其他特性：	2 X 16 BIT DATA INPUT BUS; ICC SPECIFIED AT 5MHZ	边界扫描：	NO
外部数据总线宽度：	16	JESD-30 代码：	S-PQCC-J68
长度：	24.2316 mm	低功率模式：	NO
端子数量：	68	最高工作温度：	85 °C
最低工作温度：	-40 °C	输出数据总线宽度：	35
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装形状：	SQUARE	封装形式：	CHIP CARRIER
认证状态：	Not Qualified	座面最大高度：	5.08 mm
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：	INDUSTRIAL
端子形式：	J BEND	端子节距：	1.27 mm
端子位置：	QUAD	宽度：	24.2316 mm
uPs/uCs/外围集成电路类型：	DSP PERIPHERAL, MULTIPLIER ACCUMULATOR/SUMMER	Base Number Matches：	1

LMA2010JI25 数据手册

LMA1010/2010

DEVICES INCORPORATED

16 x 16-bit Multiplier-Accumulator

LMA1010/2010

DEVICES INCORPORATED

16 x 16-bit Multiplier-Accumulator

DESCRIPTION

FEATURES

The LMA1010 and LMA2010 are RND, TC, ACC, and SUB controls are

ꢀ 20 ns Multiply-Accumulate Time

high-speed,

multiplier-accumulators.

low

power

16-bit latched on the rising edge of the logical

The OR of CLKA and CLKB. TC specifies

ꢀ Replaces Fairchild TMC2210,

Cypress CY7C510, IDT 7210L, and

AMD Am29510

ꢀ Two’s Complement or Unsigned

Operands

ꢀ Accumulator Performs Preload,

Accumulate, and Subtract

ꢀ Three-State Outputs

ꢀ 68-pin PLCC, J-Lead

LMA1010 and LMA2010 are function- the input as two’s complement (TC

ally identical; they differ only in HIGH) or unsigned magnitude (TC

packaging. Full military ambient tem- LOW). RND, when HIGH, adds ‘1’ to

perature range operation is achieved the most significant bit position of the

with advanced CMOS technology.

least significant half of the product.

Subsequent truncation of the 16 least

significant bits produces a result cor-

rectly rounded to 16-bit precision.

The LMA1010 and LMA2010 produce

the 32-bit product of two 16-bit num-

bers. The results of a series of multipli-

cations may be accumulated to form ACC and SUB control accumulator

the sum of products. Accumulation operation. ACC HIGH results in addi-

is performed to 35-bit precision with tion of the multiplier product and the

the multiplier product sign extended accumulator contents, with the result

as appropriate.

stored in the accumulator register on

the rising edge of CLKR. ACC and

SUB HIGH results in subtraction of

the accumulator 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 into the

accumulator register. ACC LOW and

SUB HIGH is undefined.

Data present at the A and B input

registers is latched on the rising edges

of CLKA and CLKB respectively.

LMA1010/2010 BLOCK DIAGRAM

B15-0

A^15-0

R15-0

CLK A

CLK B

A REGISTER

B REGISTER

The LMA1010/2010 output register

(accumulator register) is divided into

three independently controlled sec-

tions. The least significant result (LSR)

and most significant result (MSR)

registers are 16 bits in length. The

extended result register (XTR) is 3

bits long. The output signals R15-0

and input signals B15-0 share the same

bidirectional pins.

RND

ACC

SUB

R + A

OEX

LEX

LEM

LEL

PASS R

PRELOAD

CONTROL

LOGIC

OEM

OEL

PREL

Each output register has an indepen-

dent output enable control. In addition

to providing three-state control of the

output buffers, when OEX, OEM, or

OEL are HIGH and PREL is HIGH, 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

CLKR. 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

R^34-32

R31-16

Multiplier-Accumulators

09/18/2000–LDS.10/2010-Q

12 3 4 5 6 7

中文翻译

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与LMA2010JI25相关器件

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LMA2010KMB25	LOGIC	获取价格	Multiplier Accumulator/Summer, 16-Bit, CMOS, CQCC68, CERAMIC, LCC-68
LMA2010KMB30	LOGIC	获取价格	暂无描述
LMA2010KMB40	LOGIC	获取价格	Multiplier Accumulator/Summer, 16-Bit, CMOS, CQCC68, CERAMIC, LCC-68
LMA2010KMB55	LOGIC	获取价格	Multiplier Accumulator/Summer, 16-Bit, CMOS, CQCC68, CERAMIC, LCC-68

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