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Part: M14464EJ5V0DS00
Category:
Memory
-> SRAM
-> SRAM
Description:
Company: NEC Electronics Inc.
Datasheet: Download M14464EJ5V0DS00 datasheet File size : 24 kB
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Datasheet text preview:
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD444012A-X
4M-BIT CMOS STATIC RAM 256K-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION
Description
The µPD444012A-X is a high speed, low power, 4,194,304 bits (262,144 words by 16 bits) CMOS static RAM. The µPD444012A-X has two chip enable pins (/CE1, CE2) to extend the capacity. The µPD444012A-X is packed in 48-pin PLASTIC TSOP (I) (Normal bent).
Features
· 262,144 words by 16 bits organization 5 5 · Fast access time: 50, 55, 70, 85, 100, 120 ns (MAX.) · Byte data control: /LB (I/O1 - I/O8), /UB (I/O9 - I/O16) · Low voltage operation (B version: VCC = 2.7 to 3.6 V, C version: VCC = 2.2 to 3.6 V) · Low VCC data retention: 1.0 V (MIN.) · Operating ambient temperature: TA = 25 to +85°C · Output Enable input for easy application · Two Chip Enable inputs: /CE1, CE2
Part number Access time ns (MAX.) Operating supply V oltage V Operating ambient temperature °C -25 to +85 At operating mA (MAX.) 40 45 50
Note 2 Note 3 Note 4
Supply current At standby At data retention
µA (MAX.)
7
µA (MAX.)
3
5
µPD444012A-BxxX
50
Note 1
, 55, 70, 85, 100
2.7 to 3.6
µPD444012A-CxxX
70, 85, 100, 120
2.2 to 3.6
40
5 5 5 5
Notes 1. VCC 3.0 V 2. Cycle time 70 ns 3. Cycle time = 55 ns 4. Cycle time = 50 ns
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. M14464EJ5V0DS00 (5th edition) Date Published July 2001 NS CP (K) Printed in Japan
The mark 5 shows major revised points.
©
1999
µPD444012A-X
5
Ordering Information
Part number Package Access time ns (MAX.) Operating supply voltage V Operating temperature °C -25 to +85 B version Remark
µPD444012AGY-B55X-MJH µPD444012AGY-B70X-MJH µPD444012AGY-B85X-MJH µPD444012AGY-B10X-MJH µPD444012AGY-C70X-MJH µPD444012AGY-C85X-MJH µPD444012AGY-C10X-MJH µPD444012AGY-C12X-MJH
48-pin PLASTIC TSOP (I) (12×18) (Normal bent)
55, 50 70 85
Note
2.7 to 3.6
100 70 85 100 120 2.2 to 3.6 C version
Note VCC 3.0 V
2
Data Sheet M14464EJ5V0DS
µPD444012A-X
5
Pin Configuration (Marking Side)
/xxx indicates active low signal. 48-pin PLASTIC TSOP (I) (12×18) (Normal bent) × [ µPD444012AGY-BxxX-MJH ] [ µPD444012AGY-CxxX-MJH ]
A15 A14 A13 A12 A11 A10 A9 A8 NC NC /WE CE2 NC /UB /LB NC A17 A7 A6 A5 A4 A3 A2 A1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
A16 NC GND I/O16 I/O8 I/O15 I/O7 I/O14 I/O6 I/O13 I/O5 VCC I/O12 I/O4 I/O11 I/O3 I/O10 I/O2 I/O9 I/O1 /OE GND /CE1 A0
A0 - A17 /CE1, CE2 /WE /OE /LB, /UB VCC GND NC
: Address inputs : Chip Enable 1, 2 : Write Enable : Output Enable : Byte data select : Power supply : Ground : No Connection
I/O1 - I/O16 : Data inputs / outputs
Remark Refer to Package Drawing for the 1-pin index mark.
Data Sheet M14464EJ5V0DS
3
Others parts begin by m1
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