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Semiconductor
MSM27C3255CZ
1,048,576-Double Word x 32-Bit or 2,097,152-Word x 16-Bit 4-Double Word x 32-Bit or 8-Word x 16-Bit Page Mode One Time PROM
DESCRIPTION
1A
The MSM27C3255CZ is a 32Mbit electrically Programmable Read-Only Memory with page mode. Its configuration can be electrically switched between 1,048,576 double word x 32bit and 2,097,152 word x 16bit. The MSM27C3255CZ operates on a single +5V power supply and is TTL compatible. The MSM27C3255CZ provides Page mode which can greatly reduce the read access time. Since the MSM27C3255CZ operates asynchronously , external clocks are not required , making this device easy-to-use. The MSM27C3255CZ is suitable as large-capacity fixed memory for microcomputers and data terminals. It is manufactured using a CMOS double silicon gate technology and is offered in 70-pin SSOP package.
FEATURES
* 1,048,576 double word x 32bit / 2,097,152 word x 16bit electrically switchable configuration * Single +5V power supply * Access time 100ns Page mode access time 30ns * Input / Output TTL compatible * Three-state output * Packages 70-pin plastic SSOP (SSOP70-P-500-0.80-K)
1
MSM27C3255CZ
PIN CONFIGURATION (TOP VIEW)
A0 1 A1 2 A2 3 A3 4 A4 5 A5 6 VCC 7 D0 8 D16 9 D1 10 D17 11 VSS 12 VCC 13 D2 14 D18 15 D3 16 D19 17 D4 18 D20 19 D5 20 D21 21 VSS 22 VCC 23 D6 24 D22 25 D7 26 D23 27 VSS 28 A6 29 A7 30 A8 31 A9 32 A10 33 A11 34 A12 35
70 VPP 69 NC 68 NC 67 WORD 66 OE 65 CE 64 VSS 63 D31/A-1 62 D15 61 D30 60 D14 59 VSS 58 VCC 57 D29 56 D13 55 D28 54 D12 53 D27 52 D11 51 D26 50 D10 49 VSS 48 VCC 47 D25 46 D9 45 D24 44 D8 43 VCC 42 A19 41 A18 40 A17 39 A16 38 A15 37 A14 36 A13 PIN NAMES D31/A-1 A0 - A19 D0 - D30 CE OE VCC VSS WORD VPP NC FUNCTIONS Data output / Address input Address input Data output Chip enable Output enable Power supply voltage GND Mode switch Program power supply voltage Non connection
70-pin SSOP
2
MSM27C3255CZ
BLOCK DIAGRAM
A-1
X16/X32 Switch
CE
OE
WORD
CE
OE
PGM
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19
Row Decoder
Memory Matrix
Address Buffer
1,048,576X32-Bit or 2,097,152X16-Bit
Column Decoder
Multiplexer & Page Data Latch
Output Buffer
D0 D1
D2 D3
D4 D5
D6 D7
D8 D9
D30
D10 D11
D12 D13
D14 D15
In 16-bit output mode, these pins are three-stated and pin D31 functions as the A-1 address pin.
D16 D17
D18 D19
D20 D21
D22 D23
D24 D25
D26 D27
D28 D29
D31
FUNCTION TABLE
MODE READ (32-Bit) READ (16-Bit) OUTPUT DISABLE STAND-BY PROGRAM PROGRAM INHIBIT PROGRAM VERIFY * : Don't Care 3 CE L L L H L H H OE L L H * H H L L 11.5V 6.25V DOUT WORD H L H L H L DIN * 4.5V to 5.5V DOUT VPP VCC D0 - D15 D16 - D30 DOUT Hi-Z Hi-Z * Hi-Z Hi-Z Hi-Z Hi-Z L/H * L/H D31/A-1 L/H
MSM27C3255CZ
ABSOLUTE MAXIMUM RATINGS
Parameter Operating temperature under bias Storage temperature Input voltage Output voltage Power supply voltage Program power supply voltage Power dissipation per package Symbol Topr Tstg VI VO VCC VPP PD relative to VSS Condition Value 0 to 70 -55 to 125 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 -0.5 to 7 -0.5 to 12.5 1.0 Unit
C C
V V V V W
RECOMMENDED OPERATING CONDITIONS FOR READ
(Ta=0 to 70C) Parameter VCC power supply voltage VPP power supply voltage Input "H" level Input "L" level Voltage is relative to Vss Symbol VCC VPP VIH VIL VCC=4.5V-5.5V Condition Min. 4.5 -0.5 2.2 -0.5 Typ. Max. 5.5 VCC+0.5 VCC+0.5 0.8 Unit V V V V
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MSM27C3255CZ
ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics (VCC=5V0.5V, Ta=0 to 70C) Parameter Input leakage current Output leakage current VCC power supply current (Standby) VCC power supply current (Read) VPP power supply current Input "H" level Input "L" level Output "H" level Output "L" level Voltage is relative to Vss AC Characteristics (VCC=5V0.5V, Ta=0 to 70C) Parameter Address access cycle time Address access time Page set up time Page access cycle time Page access time CE access time OE access time Output disable time Output hold time Symbol TC TACC TPSET TPC TPAC TCE TOE TCHZ TOHZ TOH Condition CE=OE=VIL NOTE(1) OE=VIL CE=VIL OE=VIL CE=VIL CE=OE=VIL Min. 100 120 30 0 0 0 Max. 100 30 100 30 30 25 Unit ns ns ns ns ns ns ns ns ns ns Symbol ILI ILO ICS1 ICS2 ICCA IPP VIH VIL VOH VOL Condition VI=0 to Vcc VO=0 to Vcc CE=VCC CE=VIH CE=VIL , OE=VIH tc=100ns VPP=VCC IOH=-400A IOL=2.1mA Min. 2.2 -0.5 2.4 Typ. Max. 10 10 50 1 120 10 VCC+0.5 0.8 0.45 Unit A A A mA mA A V V V V
NOTE(1) TPSET is defined as the end of either CE trailing edge or address transition in random access term until the first page address transition. Measurement conditions Input signal level Input timing reference level Output load Output timing reference level
0V/3V 0.8V/2.0V 1TTL gate + 100pF 0.8V/2.0V 1.7V
400 Output 100pF (including jig capacitance)
5
MSM27C3255CZ
TIMING CHART NORMAL MODE READ CYCLE
tC ADDRESS tCE CE tOH
tOE OE tACC DOUT Hi-Z
tCHZ
tOHZ Valid Data Hi-Z
PAGE MODE READ CYCLE tC A2 - A19 tPSET tPSET A0 - A1 (X32 mode) A-1 - A1 (X16 mode) tCE CE tCHZ tOE OE tACC DOUT Hi-Z Hi-Z tPAC tPAC tOHZ tOH tPC tPC
6
MSM27C3255CZ
ELECTRICAL CHARACTERISTICS (Programming operation)
DC Characteristics (Ta=25C5C) Parameter Input leakage current VPP power supply current (Program) VCC power supply current Input "H" level Input "L" level Output "H" level Output "L" level Program voltage VCC power supply voltage Voltage is relative to Vss Symbol ILI IPP2 ICC VIH VIL VOH VOL VPP VCC Condition VI=VCC+0.5V CE=VIL IOH=-400A IOL=2.1mA Min. 2.2 -0.5 2.4 11.25 6.0 Typ. 11.5 6.25 Max. 10 50 100 VCC+0.5 0.8 0.45 11.75 6.5 Unit A mA mA V V V V V V
AC Characteristics (Vcc=6.25V0.25V,Vpp=11.5V0.25V,Ta=25C5C) Parameter Address set-up time OE set-up time Data set-up time Address hold time Data hold time Output float delay from OE VPP voltage set-up time Program pulse width Data valid from OE Symbol TAS TOES TDS TAH TDH TDFP TVS TPW TOE Condition Min. 2 2 2 0 2 0 2 23 Typ. 25 Max. 130 27 150 Unit s s s s s ns s s ns
7
MSM27C3255CZ
Programming Waveform
A-1 - A19 tAS CE tOES OE tDS tDH tDFP tPW tAH
tOE D0 - D15 tVS VPP DIN DOUT
Program
Program Verify
D16 - D30 Hi-Z
PIN Capacitance (VCC=5V, Ta=25C, f=1MHz) Parameter Input VPP Output Symbol CIN1 CIN2 COUT Condition VI=0V VO=0V Min. Typ. Max. 12 60 15 Unit pF
8
MSM27C3255CZ
High Speed Programming Algorithm ( I ) Start
First Address VCC=6.25V VPP=11.5V
X=0
X=10 ? NO Increment Address Program 25s
YES
X=X+1
NG
Verify (One Byte) PASS
NO
Last Address ? YES VCC=5.5V VPP=5.5V
Compare All PASS VCC=4.5V VPP=4.5V
NG
Compare All PASS Device Passed
NG
Device Failed
9
MSM27C3255CZ
High Speed Programming Algorithm ( II ) Start
First Address VCC=6.25V VPP=11.5V
Program 25s
Increment Address
NO Last Address ? YES First Address
X=0
Verify (One Byte) PASS NO Increment Address
NG
X=X+1
YES Last Address ? YES VCC=5.5V VPP=5.5V X=10 ? NO Program 25s
Compare All PASS VCC=4.5V VPP=4.5V
NG
Compare All PASS Device Passed
NG
Device Failed
10
Semiconductor
NOTICE
The information contained herein can change without notice owing to product and/or technical improvements. Before using the product, please make sure that the information being referred to is up-todate. The outline of action and examples for application circuits described herein have been chosen as an explanation for the standard action and performance of the product. When planning to use the product, please ensure that the external conditions are reflected in the actual circuit, assembly, and program designs. When designing your product, please use our product below the specified maximum ratings and within the specified operating ranges including, but not limited to, operating voltage, power dissipation, and operating temperature. Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified operating range. Neither indemnity against nor license of a third party's industrial and intellectual property right, etc. is granted by us in connection with the use of the product and/or the information and drawings contained herein. No responsibility is assumed by us for any infringement of a third party's right which may result from the use thereof. The products listed in this document are intended for use in general electronics equipment for commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer electronics, etc.). These products are not authorized for use in any system orapplication that requires special or enhanced quality and reliability characteristics nor in any system or application where the failure of such system or application may result in the loss or damage of property, or death or injury to humans. Such applications include, but are not limited to, traffic and automotive equipment, safety devices, aerospace equipment, nuclear power control, medical equipment, and life-support systems. Certain products in this document may need government approval before they can be exported to particular countries. The purchaser assumes the responsibility of determining the legality of export of these products and will take appropriate and necessary steps at their own expense for these. No part of the contents cotained herein may be reprinted or reproduced without our prior permission. All brand, company and product names are the trademarks or registered trademarks of their respective owners.
Copyright 1998 Oki Electric Industry Co., Ltd.
ADDRESSES & SEMICONDUCTOR WEB SITES
Ltd., OKI Electric Industry Co., Ltd. Device Business Group, 10-3, Shibaura, 4-chome, Minato-ku, Tokyo 108, Japan, Tel.: +81-(0)3-5445-6327, Fax.: +81-(0)3-5445-6328, http://www.oki.co.jp/OKI/DBG/english/index.htm (NOTE: URL is case sensitive) Group, OKI Semiconductor Group 785 North Mary Avenue, Sunnyvale, CA 94086, U.S.A., Tel.: +1-408-720-1900, Fax.: +1-408-720-1918, http://www.okisemi.com/ GmbH, OKI Electric Europe GmbH Head Office Europe, Hellersbergstrasse 2, D-41460 Neuss, Germany, Tel: +49-2131-15960, Fax: +49-2131-103539, http://www.oki-europe.de/ Ltd., OKI Electronics (Hong Kong) Ltd. Suite 1901-1&19, Tower 3, China Hong Kong City, 33 Canton Road, Tsimshatsui, Kowloon, Hong Kong, Tel.: +852-2-736-2336, Fax.: +852-2-736-2395 Ltd., OKI Semiconductor (Asia) Pte. Ltd. 78 Shenton Way 09-01, Singapore 0207, Tel.: +65-221-3722, Fax.: +65-323-5376 Ltd., OKI Semiconductor (Asia) Pte. Ltd. Taipei Branch, 7th Fl. No.260, Tun Hwa North Road, Taipei, Taiwan, R.O.C., Sumitomo-Flysun Building, Tel.: +886-2-2719-2561, Fax.: +886-2-2715-2892 http://www.oki.net.tw/
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