LH6V4256K-10 Просмотр технического описания (PDF) - Sharp Electronics

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LH6V4256K-10

CMOS 1M(256K x 4) dynamic RAM

Sharp Electronics 

CMOS 1M (256K × 4) Dynamic RAM

LH6V4256

OE 2

OE CLOCK

GENERATOR

WE 12

R/W CLOCK

GENERATOR

CAS 3

CAS CLOCK

GENERATOR

I/O1 I/O2 I/O3 I/O4

10 11

4

5

DATA IN

BUFFER

DATA OUT

BUFFER

VBB

GENERATOR

20 VCC

6 VSS

RAS 13

RAS CLOCK

GENERATOR

MEMORY

ARRAY

1,048,576 BITS

ROW

ADDRESS

COUNTER

REFRESH

CONTROL

ADDRESS

BUFFER

ROW

DECODER

16 17

18 19

23

A0

A1

A2

A3

A4

NOTE: Pin numbers apply to the 28-pin TSOP (Type I).

24 25

A5

A6

26 27

A7

A8

Figure 5. LH6V4256 Block Diagram

6V4256-5

2-17

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