W24257-70LL Winbond Electronics, W24257-70LL Datasheet

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W24257-70LL

Manufacturer Part Number
W24257-70LL
Description
Manufacturer
Winbond Electronics
Datasheet

Specifications of W24257-70LL

Lead Free Status / Rohs Status
Not Compliant

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Part Number:
W24257-70LL
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W24257-70LL
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GENERAL DESCRIPTION
The W24257 is a slow speed, low power CMOS static RAM organized as 32768
on a single 5-volt power supply. This device is manufactured using Winbond's high performance
CMOS technology.
FEATURES
PIN CONFIGURATIONS
Low power consumption:
Access time: 70 nS (max.)
Single 5V power supply
Fully static operation
Active: 325 mW (max.)
Standby: 75 W (max.) (LL-version)
# W E
# O E
A13
V
A14
A12
A11
I/O2
A4
A3
I/O1
I/O3
A7
A6
A5
A14
A12
V
A8
A9
D D
A7
A5
A0
A6
A4
A3
A2
A1
SS
150 W (max.) (L-version)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
6
7
8
5
9
10
12
11
13
14
28-pin
28-pin
TSOP
SOP
28
26
25
24
22
21
20
19
18
17
16
15
27
23
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
A9
I/O8
I/O6
I/O5
I/O4
# W E
A13
A8
A11
#OE
A10
#CS
I/O7
DD
#CS
A10
I/O 8
I/O 7
I/O 6
I/O 5
I/O 4
V
I/O 3
I/O 2
I/O 1
A0
A1
A2
SS
32K
- 1 -
BLOCK DIAGRAM
PIN DESCRIPTION
All inputs and outputs directly TTL compatible
Three-state outputs
Battery back-up operation capability
Data retention voltage: 2V (min.)
Packaged in 28-pin 330 mil SOP,
standard type one TSOP (8 mm x 13.4 mm )
SYMBOL
I/O1 I/O8
A0 A14
#CS
# O E
# W E
A14
V
V
A0
#WE
#OE
#CS
D D
V
SS
V
.
.
8 CMOS STATIC RAM
DD
SS
Publication Release Date: February 2001
D E C O D E R
C O N T R O L
Address Inputs
Data Inputs/Outputs
Chip Select Input
Write Enable Input
Output Enable Input
Power Supply
Ground
DESCRIPTION
DATA I/O
A R R A Y
8 bits that operates
C O R E
W24257
Revision A16
I/O1
I/O8
.
.

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W24257-70LL Summary of contents

Page 1

... GENERAL DESCRIPTION The W24257 is a slow speed, low power CMOS static RAM organized as 32768 on a single 5-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. FEATURES Low power consumption: Active: 325 mW (max.) Standby (max.) (LL-version) 150 W (max.) (L-version) Access time (max ...

Page 2

... Data Out Data In RATING -0.5 to +7.0 -0 -65 to +150 0 to +70 TEST CONDITIONS - - # I/O SS DD, IH (min (min # (max + (min.), IL I Cycle = min., Duty = 100% # (min.) IH Cycle = min., Duty = 100% LL/LE #CS V -0. 5V W24257 V CURRENT UNIT MIN. TYP. MAX. -0.5 - +0 0.4 2 ...

Page 3

... OUTPUT 100 pF Including Jig and Scope SYM. CONDITIONS I/O OUT 0. 100 pF OUTPUT R2 660 ohm (For T 3.0V 90% 90% 10% 10 W24257 MAX. UNIT CONDITIONS / mA 1000 ohm 660 ohm Including Jig and Scope , OHZ CLZ OLZ CHZ WHZ OW Publication Release Date: February 2001 ...

Page 4

... Data Hold from End of Write Write to Output in High Z Output Disable to Output in High Z Output Active from End of Write These parameters are sampled but not 100% tested SYMBOL MIN ACS T AOE T * CLZ T * OLZ T * CHZ T * OHZ T OH SYMBOL MIN #CS, # WHZ T * OHZ W24257 W24257-70 UNIT MAX W24257-70 UNIT MAX ...

Page 5

... TIMING WAVEFORMS Read Cycle 1 (Address Controlled) Address D OUT Read Cycle 2 (Chip Select Controlled) #CS D OUT Read Cycle 3 (Output Enable Controlled) Address # ACS T CLZ AOE T OLZ T ACS T CLZ Publication Release Date: February 2001 - 5 - W24257 CHZ OHZ T CHZ Revision A16 ...

Page 6

... The data output from D are the same as the data written to D OUT 3. D provides the read data for the next address. OUT 4. Transition is measured 500 mV from steady state with ( ( during the write cycle pF. This parameter is guaranteed but not 100% tested W24257 (2) ( ...

Page 7

... W24257S-70LE 70 W24257Q-70LL 70 W24257Q-70L 70 W24257Q-70LE 70 Notes: 1. Winbond reserves the right to make changes to its products without prior notice. 2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in applications where personal injury might occur as a consequence of product failure. SYM. TEST CONDITIONS ...

Page 8

... A10 I/O4 I/O5 I/O6 I/O7 CSB W24257 X Y -232.25 1445.22 -351.70 1445.22 -471.15 1445.22 -590.60 1445.22 -710.05 1445.22 -829.50 1445.22 -992.79 1362.24 -992.79 -1306.11 -857.86 -1452.79 -738.41 -1452.79 -594.84 -1414.13 -451.06 -1414.13 -310.67 -1414.13 -171.78 -1405.28 24.45 -1405.28 151.80 -1414.13 298.07 -1414 ...

Page 9

... Standard Type One TSOP Detail See Detail W24257 Dimension in Inches Dimension in mm Symbol Min. Nom. Max. Min. Nom. Max. 2.85 0.112 A 0.004 0. 0.093 0.098 0.103 2.36 2.49 2.62 2 0.014 0.016 0.020 0.36 0.41 0.51 b 0.014 0.20 0.25 0.36 c 0.008 0.010 18.62 0.713 0.733 18 ...

Page 10

... Note: All data and specifications are subject to change withou t notice. Note: All data and specifications are subject to change withou t notice. PAGE Change the Remove the W24257-10 spc. 7 Typo correction in Standby Current Max.: mA-> Delete 28-pin DIP Package 8 Add in Bonding Pad Diagram 2 Modify Operating Power Supply Current (I ...

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