HM514400BLS-7 HITACHI, HM514400BLS-7 Datasheet

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HM514400BLS-7

Manufacturer Part Number
HM514400BLS-7
Description
1,048,576-word x 4-bit dynamic random access memory, 70ns
Manufacturer
HITACHI
Datasheet
The Hitachi HM514400B/BL, HM514400C/CL
are CMOS dynamic RAM organized 1,048,576-
word
have realized higher density, higher performance
and various functions by employing 0.8 m CMOS
process technology and some new CMOS circuit
design technologies. The HM514400B/BL,
HM514400C/CL offer Fast Page Mode as a high
speed access mode. Multiplexed address input
permits the HM514400B/BL, HM514400C/CL to
be packaged in standard 300-mil 26-pin plastic
SOJ, standard 400-mil 20-pin plastic ZIP and 26-
pin plastic TSOP II.
Features
• Single 5 V ( 10%)
• High speed
• Low power dissipation
• Fast page mode capability
• 1024 refresh cycles : 16 ms
• 3 variations of refresh
1,048,576-word 4-bit Dynamic Random Access Memory
1024 refresh cycles : 128 ms (L-version)
— Access time
— Active mode
— Standby mode 11 mW (max)
— Hidden refresh
60 ns/70 ns/80 ns (max)
605 mW/550 mW/495 mW (max)
RAS
CAS
4-bit. HM514400B/BL, HM514400C/CL
-only refresh
-before-
RAS
0.55 mW (max) (L-version)
HM514400C/CL Series
HM514400B/BL Series
refresh
• Test function
• Battery back up operation
— HM514400BL Series (L-version)
— HM514400CL Series (L-version)
ADE-203-269A (Z)
Nov. 29, 1994
Rev. 1.0

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HM514400BLS-7 Summary of contents

Page 1

... HM514400B/BL Series HM514400C/CL Series 1,048,576-word 4-bit Dynamic Random Access Memory The Hitachi HM514400B/BL, HM514400C/CL are CMOS dynamic RAM organized 1,048,576- word 4-bit. HM514400B/BL, HM514400C/CL have realized higher density, higher performance and various functions by employing 0.8 m CMOS process technology and some new CMOS circuit design technologies ...

Page 2

... HM514400B/BL, HM514400C/CL Series Ordering Information Access Type No. time HM514400BS HM514400BS HM514400BS HM514400BLS HM514400BLS HM514400BLS HM514400CS HM514400CS HM514400CS HM514400CLS HM514400CLS HM514400CLS HM514400BZ HM514400BZ HM514400BZ HM514400BLZ HM514400BLZ-7 ...

Page 3

Pin Arrangement HM514400BS/BLS Series HM514400CS/CLS Series I/ RAS (Top view) HM514400BTT/BLTT Series HM514400CTT/CLTT Series I/ RAS ...

Page 4

HM514400B/BL, HM514400C/CL Series Pin Description Pin name Function Address input Refresh address input I/O1 to I/O4 Data-in/Data-out RAS Row address strobe CAS Column address strobe WE Read/Write enable OE Output enable V Power (+5 ...

Page 5

Block Diagram RAS RAS Control Circuit I/O1 I/O1 Buffer Row Driver Row Driver Row Address Buffer HM514400B/BL, HM514400C/CL Series CAS WE CAS Control WE Control Circuit Circuit I/O2 I/O2 Buffer Row Row Row Driver Driver Driver Row Decoder & Peripheral ...

Page 6

HM514400B/BL, HM514400C/CL Series Absolute Maximum Ratings Parameter Voltage on any pin relative to V Supply voltage relative Short circuit output current Power dissipation Operating temperature Storage temperature Recommended DC Operating Conditions ( +70 C) ...

Page 7

DC Characteristics ( + Parameter Symbol Operating current I CC1 Standby current I CC2 Standby current I CC2 (L-version) RAS-only I CC3 refresh current Standby current I CC5 CAS-before-RAS I CC6 refresh current Fast page ...

Page 8

HM514400B/BL, HM514400C/CL Series Capacitance ( Parameter Input capacitance (Address) Input capacitance (Clocks) Output capacitance (Data-in, Data-out) Notes: 1. Capacitance measured with Boonton Meter or effective capacitance measuring method. 2. CAS = V to disable Dout. IH ...

Page 9

Read, Write, Read-Modify-Write and Refresh Cycles (Common parameters) Parameter Random read or write cycle time RAS precharge time RAS pulse width CAS pulse width Row address setup time Row address hold time Column address setup time Column address hold time ...

Page 10

HM514400B/BL, HM514400C/CL Series Read Cycle Parameter Access time from RAS Access time from CAS Access time from address Access time from OE Read command setup time Read command hold time to CAS Read command hold time to RAS Column address ...

Page 11

Read-Modify-Write Cycle Parameter Read-modify-write cycle time RAS to WE delay time CAS to WE delay time Column address to WE delay time OE hold time from WE Refresh Cycle Parameter CAS setup time (CBR refresh cycle) CAS hold time (CBR ...

Page 12

HM514400B/BL, HM514400C/CL Series Fast Page Mode Read-Modify-Write Cycle Parameter Fast page mode read-modify-write cycle time Fast page mode read-modify-write cycle CAS precharge to WE delay time Test Mode Cycle Parameter Test mode WE setup time Test mode WE hold time ...

Page 13

Notes measurements assume t 2. Assumes that t RCD maximum recommended value shown in this table Measured with a load circuit equivalent to 2 TTL loads and 100 pF. 4. Assumes that t RCD 5. Assumes ...

Page 14

HM514400B/BL, HM514400C/CL Series *21 Timing Waveforms Read Cycle RAS t T CAS t ASR Row Address WE Dout Din OE Notes: 21 (H: V Invalid Dout RAS t RSH t RCD t CAS ...

Page 15

Early Write Cycle RAS t T CAS t ASR Row Address WE Din Dout HM514400B/BL, HM514400C/CL Series RAS t RSH t t CAS RCD t CSH RAH ASC CAH Column t t WCS WCH ...

Page 16

HM514400B/BL, HM514400C/CL Series Delayed Write Cycle RAS t T CAS t t ASR RAH Row Address WE Din t DZO Dout RAS t CSH t t RCD RSH t CAS t ASC t CAH Column ...

Page 17

Read-Modify-Write Cycle RAS t T CAS t ASR Address WE Din Dout t OE HM514400B/BL, HM514400C/CL Series t RWC t RAS t RCD t RAD CAH RAH ASC Column Row t CWD t RCS t AWD t ...

Page 18

HM514400B/BL, HM514400C/CL Series Hidden Refresh Cycle (Read) RAS RCD CAS t t ASR t RAD t RAH Address Row t RCS WE t RAC Dout t DZC Din t DZO ...

Page 19

Fast Page Mode Read Cycle RAS CAS t ASR t t RAH Address Row WE Din Dout OE HM514400B/BL, HM514400C/CL Series t RASC t t CSH RCD CAS CP RAD CAH ...

Page 20

HM514400B/BL, HM514400C/CL Series Fast Page Mode Early Write Cycle RAS RCD CAS t t ASR RAH Address Row WE Din Dout 20 t RASC t t CSH CAS CP CAS ...

Page 21

Fast Page Mode Delayed Write Cycle RAS RCD CAS t ASR t t RAH Address Row t RCS WE Din Dout t ODD OE HM514400B/BL, HM514400C/CL Series t RASC t t CSH CAS ...

Page 22

HM514400B/BL, HM514400C/CL Series Fast Page Mode Read-Modify-Write Cycle RAS t RCD t T CAS t RAD t RAH t ASR t ASC Row Column Address t RCS DZC High-Z Din RAC t OAC Dout ...

Page 23

Test Mode Cycle Set Cycle** RAS CAS WE Test Mode Set Cycle WE-and-CAS-Before RAS-Refresh Cycle RAS t RPC CAS t CPN@ WE Address t OFF1 Dout HM514400B/BL, HM514400C/CL Series Test Mode Cycle RAS t t CSR CHR ...

Page 24

HM514400B/BL, HM514400C/CL Series CAS-Before-RAS Refresh Cycle RAS CAS WE Address t OFF1 Dout RAS CPN CSR CHR t RPC RPC CRP ...

Page 25

RAS-Only Refresh Cycle RAS CAS t ASR Address Dout HM514400B/BL, HM514400C/CL Series RAS CRP t RAH Row High-Z * Refresh address : A0 – A9 (AX0 – AX9 ...

Page 26

HM514400B/BL, HM514400C/CL Series CAS-Before-RAS Refresh Counter Check Cycle (Read) RAS t CSR CAS Address Din Dout RAS CHR CPT t ASC RCS t DZC ...

Page 27

CAS-Before-RAS Refresh Counter Check Cycle (Write) RAS CSR CAS Address Din Dout OE HM514400B/BL, HM514400C/CL Series t RAS t t CHR CPT t ASC t t WCS Din High ...

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