HM62W16255HLTT-15 HITACHI, HM62W16255HLTT-15 Datasheet

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HM62W16255HLTT-15

Manufacturer Part Number
HM62W16255HLTT-15
Description
4M high speed SRAM (256-kword x 16-bit), 15ns access time
Manufacturer
HITACHI
Datasheet
Description
The HM62W16255H is a 4-Mbit high speed static RAM organized 256-kword
speed access time by employing CMOS process (4-transistor + 2-poly resistor memory cell)and high speed
circuit designing technology. It is most appropriate for the application which requires high speed, high
density memory and wide bit width configuration, such as cache and buffer memory in system. The
HM62W16255H is packaged in 400-mil 44-pin SOJ and 400-mil 44-pin plastic TSOPII for high density
surface mounting.
Features
Single 3.3 V supply: 3.3 V 0.3V
Access time: 12/15 ns (max)
Completely static memory
Equal access and cycle times
Directly TTL compatible
Operating current: 180/160 mA (max)
TTL standby current: 60/50 mA (max)
CMOS standby current: 5 mA (max)
Data retension current: 0.6 mA (max) (L-version)
Data retension voltage: 2.0 V (min) (L-version)
Center V
No clock or timing strobe required
All inputs and outputs
CC
and V
SS
4M High Speed SRAM (256-kword 16-bit)
type pinout
HM62W16255H Series
: 1mA (max) (L-version)
16-bit. It has realized high
ADE-203-751D (Z)
Sep. 15, 1998
Rev. 1.0

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HM62W16255HLTT-15 Summary of contents

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HM62W16255H Series 4M High Speed SRAM (256-kword 16-bit) Description The HM62W16255H is a 4-Mbit high speed static RAM organized 256-kword speed access time by employing CMOS process (4-transistor + 2-poly resistor memory cell)and high speed circuit designing technology ...

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... HM62W16255H Series Ordering Information Type No. HM62W16255HJP-12 HM62W16255HJP-15 HM62W16255HLJP-12 HM62W16255HLJP-15 HM62W16255HTT-12 HM62W16255HTT-15 HM62W16255HLTT-12 HM62W16255HLTT-15 Pin Arrangement HM62W16255HJP/HLJP Series I/O1 7 I/O2 8 I/ I/O5 13 I/O6 14 I/ (Top View) 2 Access time Package ...

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Pin Description Pin name Function A0 to A17 Address input I/O1 to I/O16 Data input/output CS Chip select OE Output enable WE Write enable UB Upper byte select LB Lower byte select V Power supply CC V Ground SS NC ...

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HM62W16255H Series Operation Table Mode H Standby Output disable Read Lower byte read Upper byte read ...

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Recommended DC Operating Conditions ( +70 C) Parameter Supply voltage Input voltage Notes (min) = –2.0 V for pulse width (under shoot (max 2.0 V for pulse width (over ...

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HM62W16255H Series Capacitance ( 1.0 MHz) Parameter 1 Input capacitance* 1 Input/output capacitance* Note: 1. This parameter is sampled and not 100% tested. 6 Symbol Min Typ Cin — — C — — I/O Max ...

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AC Characteristics ( + Test Conditions Input pulse levels: 3.0 V/0.0 V Input rise and fall time Input and output timing reference levels: 1.5 V Output load: See figures (Including scope and jig) ...

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HM62W16255H Series Write Cycle Parameter Write cycle time Address valid to end of write Chip select to end of write Write pulse width Byte select to end of write Address setup time Write recovery time Data to write time overlap ...

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Timing Waveforms Read Timing Waveform (1) ( Address High Impedance Dout (Lower byte) High Impedance Dout (Upper byte Valid address ACS ...

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HM62W16255H Series Read Timing Waveform (2) ( Address CS OE High Impedance Dout (Lower/Upper byte UB Valid address ACS t OE ...

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Write Timing Waveform (1) (LB, UB Controlled) Address t 3 WE Dout (Lower byte) Dout (Upper byte) Din (Lower byte) Din (Upper byte Valid address ...

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HM62W16255H Series Write Timing Waveform (2) (WE Controlled) Address t 3 WE* 3 CS* OE LB, UB Dout (Lower/Upper byte) Din (Lower/Upper byte Valid address LBW UBW t ...

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Write Timing Waveform (3) (CS Controlled) Address LB, UB Dout (Lower/Upper byte) Din (Lower/Upper byte Valid address LBW UBW t WHZ ...

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HM62W16255H Series Low V Data Retention Characteristics ( + This characteristics is guaranteed only for L-version. Parameter V for data retention CC Data retention current Chip deselect to data retention time Operation recovery time Note: ...

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... Package Dimensions HM62W16255HJP/HLJP Series (CP-44D) 28.90 Max 44 1 0.74 1.30 Max 0.43 0.10 0.41 0.08 Dimension including the plating thickness Base material dimension 28. 1.27 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) HM62W16255H Series Unit: mm 9.40 0.25 CP-44D Conforms — 1 ...

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... HM62W16255H Series HM62W16255HTT/HLTT Series (TTP-44DE) 18.41 18.81 Max 44 1 0.80 0.27 0.07 0.13 0.25 0.05 1.005 Max 0.10 Dimension including the plating thickness Base material dimension 11.76 0.20 Hitachi Code JEDEC EIAJ Weight (reference value) Unit: mm 0.80 0 – 5 0.50 0.10 TTP-44DE — — 0.43 g ...

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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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