HM62W16258BLTTI-7 HITACHI, HM62W16258BLTTI-7 Datasheet

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HM62W16258BLTTI-7

Manufacturer Part Number
HM62W16258BLTTI-7
Description
4M SRAM (256-kword x 16-bit)
Manufacturer
HITACHI
Datasheet
Description
The Hitachi HM62W16258BI Series is 4-Mbit static RAM organized 262,144-word
HM62W16258BI Series has realized higher density, higher performance and low power consumption by
employing Hi-CMOS process technology. It offers low power standby power dissipation; therefore, it is
suitable for battery backup systems. It is packaged in standard 44-pin plastic TSOPII.
Features
• Single 3.3 V supply: 3.3 V 0.3 V
• Fast access time: 70 ns (max)
• Power dissipation:
• Completely static memory.
• Equal access and cycle times
• Common data input and output.
• Battery backup operation.
• Temperature range: –40 to 85 C
Ordering Information
Type No.
HM62W16258BLTTI-7
Active: 9.9 mW (typ)
Standby: 3.3 W (typ)
No clock or timing strobe required
Three state output
HM62W16258BI Series
Access time
70 ns
4 M SRAM (256-kword
Package
400-mil 44-pin plastic TSOPII (normal-bend type) (TTP-44DB)
16-bit)
ADE-203-1072A (Z)
Jun. 10, 1999
Rev. 1.0
16-bit.

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HM62W16258BLTTI-7 Summary of contents

Page 1

... Equal access and cycle times • Common data input and output. Three state output • Battery backup operation. • Temperature range: – Ordering Information Type No. Access time HM62W16258BLTTI 16-bit) Package 400-mil 44-pin plastic TSOPII (normal-bend type) (TTP-44DB) ADE-203-1072A (Z) Rev. 1.0 Jun. 10, 1999 ...

Page 2

HM62W16258BI Series Pin Arrangement Pin Description Pin name Function A0 to A17 Address input I/O0 to I/O15 Data input/output CS Chip select WE Write enable OE Output enable LB Lower byte select UB Upper byte select V Power supply CC ...

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Block Diagram LSB A4 A3 A15 A14 A16 A1 A2 A17 A0 MSB A13 I/O0 I/O15 • • • Memory matrix Row • • 2,048 x 2,048 decoder • Column I/O • Input Column decoder ...

Page 4

HM62W16258BI Series Operation Table Note ...

Page 5

DC Characteristics Parameter Input leakage current Output leakage current Operating current Average HM62W16258BI-7 I operating current Standby current Standby current Output high voltage Output low voltage Notes: 1. Typical values are at V Capacitance ( ...

Page 6

HM62W16258BI Series AC Characteristics (Ta = – Test Conditions • Input pulse levels 0 • Input rise and fall time • Input timing reference levels: 1.4 V • Output ...

Page 7

Write Cycle Parameter Write cycle time Address valid to end of write Chip selection to end of write Write pulse width LB, UB valid to end of write Address setup time Write recovery time Data to write time overlap Data ...

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HM62W16258BI Series Timing Waveform Read Cycle Address CS LB High impedance Dout Valid address ACS CLZ BLZ ...

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Write Cycle (1) (WE Clock) Address CS LB Din Dout t WC Valid address WHZ * HM62W16258BI Series ...

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HM62W16258BI Series Write Cycle (2) (CS Clock Address CS LB Din Dout Valid address High impedance ...

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Write Cycle (3) (LB, UB Clock Address CS LB Din Dout ) Valid address High impedance HM62W16258BI Series ...

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HM62W16258BI Series Low V Data Retention Characteristics (Ta = – Parameter V for data retention CC Data retention current Chip deselect to data retention time Operation recovery time Notes max ...

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Low V Data Retention Timing Waveform (1) (CS Controlled CDR V CC 3 Data Retention Timing Waveform (2) (LB, UB Controlled) Low CDR V CC 3.0 V ...

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... HM62W16258BI Series Package Dimensions HM62W16258BLTTI Series (TTP-44DB) 18.41 18.81 Max 44 1 0.80 *0.30 0.10 0.13 0.25 0.05 1.005 Max 0.10 *Dimension including the plating thickness Base material dimension 11.76 Hitachi Code JEDEC EIAJ Weight (reference value) 0.80 0.20 0 – 5 0.50 0.10 TTP-44DB — ...

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... Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics ...

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HM62W16258BI Series Revision Record Rev. Date Contents of Modification 1.0 Jun. 10, 1999 Initial issue 16 Drawn by Approved by ...

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