UPD43256BGW-70X-9JL

Manufacturer Part NumberUPD43256BGW-70X-9JL
Description256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT EXTENDED TEMPERATURE OPERATION
ManufacturerNEC [NEC]
UPD43256BGW-70X-9JL datasheet
 


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Description
The PD43256B-X is a high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM.
The PD43256B-X is an extended-operating-temperature version of the PD43256B (X version : T
C). And A and B versions are low voltage operations. Battery backup is available.
The PD43256B-X is packed in 28-pin plastic TSOP (I) (8 x 13.4 mm).
Features
32,768 words by 8 bits organization
Fast access time: 70, 85, 100, 120, 150 ns (MAX.)
Operating ambient temperature: T
Low voltage operation (A version: V
Low V
data retention: 2.0 V (MIN.)
CC
/OE input for easy application
Part number
Access time
ns (MAX.)
PD43256B-xxX
70, 85
Note2
PD43256B-AxxX
85
, 100, 120
Note2
PD43256B-BxxX
100, 120
Notes 1. T
40 C, V
= 3.0 V
A
CC
2. 100 s (MAX.) (V
CC
Version X
This Data sheet can be applied to the version X. Each version is identified with its lot number. Letter X in the fifth
character position in a lot number signifies version X.
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. M11012EJ4V0DSJ1 (4th edition)
Date Published December 2000 NS CP (K)
Printed in Japan
DATA SHEET
256K-BIT CMOS STATIC RAM
32K-WORD BY 8-BIT
EXTENDED TEMPERATURE OPERATION
= –25 to +85 C
A
= 3.0 to 5.5 V, B version: V
CC
Operating supply Operating ambient
voltage
temperature
V
°C
4.5 to 5.5
25 to +85
Note2
3.0 to 5.5
Note2
Note2
, 150
2.7 to 5.5
= 4.5 to 5.5 V)
JAPAN
D43256B-X
Lot number
The mark
shows major revised points.
MOS INTEGRATED CIRCUIT
PD43256B-X
= –25 to +85
A
= 2.7 to 5.5 V)
CC
Supply current
At operating
At standby
mA (MAX.)
A (MAX.)
45
50
40
At data retention
Note1
A (MAX.)
2
©
1995

UPD43256BGW-70X-9JL Summary of contents

  • Page 1

    Description The PD43256B high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM. The PD43256B extended-operating-temperature version of the PD43256B (X version : T C). And A and B versions are ...

  • Page 2

    Ordering Information Part number PD43256BGW-70X-9JL 28-PIN PLASTIC TSOP(I) PD43256BGW-85X-9JL (8x13.4) (Normal bent) PD43256BGW-A85X-9JL PD43256BGW-A10X-9JL PD43256BGW-A12X-9JL PD43256BGW-B10X-9JL PD43256BGW-B12X-9JL PD43256BGW-B15X-9JL PD43256BGW-70X-9KL 28-PIN PLASTIC TSOP(I) PD43256BGW-85X-9KL (8x13.4) (Reverse bent) PD43256BGW-A85X-9KL PD43256BGW-A10X-9KL PD43256BGW-A12X-9KL PD43256BGW-B10X-9KL PD43256BGW-B12X-9KL PD43256BGW-B15X-9KL 2 Package Access time Operating supply Operating ...

  • Page 3

    Pin Configurations (Marking Side) /xxx indicates active low signal. /OE 1 A11 A13 5 / A14 8 A12 A10 ...

  • Page 4

    Block Diagram A0 Address buffer A14 I/O1 I/O8 /CS /OE / GND Truth Table /CS /OE / Remark : Row Memory cell array ...

  • Page 5

    Electrical Specifications Absolute Maximum Ratings Parameter Supply voltage Input / Output voltage Operating ambient temperature Storage temperature Note –3.0 V (MIN.) (Pulse width : 50 ns) Caution Exposing the device to stress above those listed in Absolute Maximum Rating could ...

  • Page 6

    DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) (1/2) Parameter Symbol Input leakage current I LI I/O leakage current I LO • Operating supply current I CCA1 I CCA2 I CCA3 Standby supply current SB1 High level ...

  • Page 7

    DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) (2/2) Parameter Symbol Input leakage current I/O leakage current I/O / Operating supply ...

  • Page 8

    AC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) AC Test Conditions [ PD43256B-70X, PD43256B-85X] Input Waveform (Rise and Fall Time 2.4 V 0.6 V Output Waveform Output Load AC characteristics should be measured with the following output load conditions. (t ...

  • Page 9

    Read Cycle (1/2) Parameter • Read cycle time Address access time /CS access time /OE access time Output hold from address change /CS to output in low impedance /OE to output in low impedance /CS to output in high impedance ...

  • Page 10

    Read Cycle Timing Chart Address (Input) /CS (Input) /OE (Input) I/O (Output) Remark In read cycle, /WE should be fixed to high level ACS t CLZ OLZ High impedance Data Sheet ...

  • Page 11

    Write Cycle (1/2) Parameter • Write cycle time /CS to end of write Address valid to end of write Write pulse width Data valid to end of write Data hold time Address setup time Write recovery time /WE to output ...

  • Page 12

    Write Cycle Timing Chart 1 (/WE Controlled) Address (Input) /CS (Input) t /WE (Input) I/O (Input / Output) Indefinite data out Cautions 1. /CS or /WE should be fixed to high level during address transition. 2. When I/O pins are ...

  • Page 13

    Write Cycle Timing Chart 2 (/CS Controlled) Address (Input) /CS (Input) /WE (Input) High impedance I/O (Input) Cautions 1. /CS or /WE should be fixed to high level during address transition. 2. When I/O pins are in the output state, ...

  • Page 14

    Low V Data Retention Characteristics (T CC Parameter Data retention supply voltage Data retention supply current Chip deselection to data retention mode Operation recovery time Note C Data Retention ...

  • Page 15

    Package Drawings 28-PIN PLASTIC TSOP(I) (8x13. NOTES 1. Each lead centerline is located within 0. its true position (T.P.) at maximum material condition. 2. "A" excludes mold flash. (Includes mold flash : 8.4mm ...

  • Page 16

    PLASTIC TSOP(I) (8x13. NOTE 1. Each lead centerline is located within 0. its true position (T.P.) at maximum material condition. 2. "A" excludes mold flash. (Includes mold flash : 8.4mm MAX.) ...

  • Page 17

    Recommended Soldering Conditions Please consult with our sales offices for soldering conditions of the PD43256B-X. Types of Surface Mount Device PD43256BGW-xxX-9JL : 28-PIN PLASTIC TSOP(I) (8x13.4) (Normal bent) PD43256BGW-xxX-9KL : 28-PIN PLASTIC TSOP(I) (8x13.4) (Reverse bent) PD43256BGW-AxxX-9JL : 28-PIN PLASTIC ...

  • Page 18

    Data Sheet M11012EJ4V0DS PD43256B-X ...

  • Page 19

    NOTES FOR CMOS DEVICES 1 PRECAUTION AGAINST ESD FOR SEMICONDUCTORS Note: Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation ...

  • Page 20

    The information in this document is current as of December, 2000. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC's data sheets or data books, etc., for the most up-to-date specifications ...