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EDI9F37512C
512Kx37 Static RAM CMOS, High Speed Module
FEATURES
n 512Kx37 bit CMOS Static RAM Access Times: 45 and 55ns Individual Byte Selects Fully Static, No Clocks TTL Compatible I/O n High Density Package 72 lead SIMM, No. 418 Common Data Inputs and Outputs n Single +5V (10%) Supply Operation
DESCRIPTION
The EDI9F37512C is a high speed 20 megabit Static RAM module organized as 512K words x 37 bits. This module is constructed from five 512Kx8 Static RAMs in TSOP packages on an epoxy laminate (FR4) board. Four write selects (W0-W3) are used to independently enable the four bytes. Reading and writing can be executed on individual bytes or any combination of multiple bytes through proper use of selects. The EDI9F37512C is offered in a 72 lead SIMM which allows 20 megabits of memory to be placed in less than 1.5 square inch of board space. All inputs and outputs are TTL compatible and operate from a single 5V supply. Fully asynchronous circuitry requires no clocks or refreshing for operation and provides equal access and cycle times for ease of use. The SIMM module contains two Presence Detect pins which are used to identify module memory density in applications where alternate modules can be interchanged.
FIG. 1
PIN CONFIGURATIONS AND BLOCK DIAGRAM
AD3 AD4 AD1 AD2 VSS AD0 AW DQ0 DQ8 DQ1 DQ9 DQ2 DQ10 DQ3 DQ11 VCC A0 A1 A2 A3 A4 A5 DQ12 DQ4 DQ13 DQ5 DQ14 DQ6 DQ15 DQ7 VSS E A6 A7 W1 W0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 W3 W2 A18 A17 G VSS DQ24 DQ16 DQ25 DQ17 DQ26 DQ18 DQ27 DQ19 A8 A9 A10 A11 A12 A13 VCC A14 A15 DQ20 DQ28 DQ21 DQ29 DQ22 DQ30 DQ23 DQ31 VSS A16 PD1 NC PD0 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
9F37512C Pin Config.
PIN NAMES
AO-A18 E W0-W3 AW G DQO-DQ31 VCC VSS PD0-PD1
A0-A18 E G
Address Inputs Chip Enables Write Enable Parity Write Enable Output Enable Common Data Input/Output Power (+5V10%) Ground Presence Detect
512k x8
W0 W1
DQ0-DQ7
512k x8
DQ8-DQ15
512k DQ16-DQ23 x8
W2 W3
512k x8
DQ24-DQ31
512k x8
AW
AD0-AD4
9F37512C Blk Dia
Oct. 2002 Rev. 4A ECO #15655
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White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
EDI9F37512C
AC CHARACTERISTICS READ CYCLE
Parameter Read Cycle Time Address Access Time Chip Enable Access Chip Enable to Output in Low Z (1) Chip Disable to Output in High Z (1) Output Hold from Address Change Output Enable to Output Valid Output Enable to Output in Low Z (1) Output Disable to Output in High Z(1)
Notes: 1. Parameter guaranteed, but not tested.
Symbo JEDEC Alt. TAVAV TRC TAVQV TAA TELQV TACS TELQX TCLZ TEHQZ TCHZ TAVQX TOH TGLQV TOE TGLQX TOLZ TGHQZ TOHZ
45ns Min Max 45 45 45 3 18 3 15 0 15
55ns Min Max 55 55 55 3 25 3 25 0 15
Units ns ns ns ns ns ns ns ns ns
FIG. 2 READ CYCLE 1 - W HIGH, G, E LOW
TAVAV A ADDRESS 1 TAVQV Q
9F37512C Rd Cyc1
ADDRESS 2 TAVQX DATA 1 DATA 2
FIG. 3 READ CYCLE 2 - W HIGH
TAVAV A TAVQV E TELQV TELQX G TGLQV TGLQX Q
9F37512C Rd Cyc2
TEHQZ
TGHQZ
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
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Oct. 2002 Rev. 4A ECO #15655
EDI9F37512C
AC CHARACTERISTICS WRITE CYCLE
Symbol JEDEC Alt. TAVAV TWC TELWH TCW TWLEH TCW TAVWL TAS TAVEL TAS TAVWH TAW TAVEH TAW TWLWH TWP TELEH TWP TWHAX TWR TEHAX TWR TWHDX TDH TEHDX TDH TWLQZ TWHZ TDVWH TDW TDVEH TDW TWHQX TWLZ 45ns Min Max 45 25 25 0 0 25 25 25 25 0 0 0 0 0 6 20 20 3 55ns Min Max 55 45 45 0 0 45 45 40 40 0 0 0 0 0 28 30 30 3
Parameter Write Cycle Time Chip Enable to End of Write Address Setup Time Address Valid to End of Write Write Pulse Width Write Recovery Time Data Hold Time Write to Output in High Z (1) Data to Write Time Output Active from End of Write (1)
Notes: 1. Parameter guaranteed, but not tested.
Units ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
FIG. 4 WRITE CYCLE 2 - E CONTROLLED
TAVAV A TAVEL E TAVEH TWLEH W TDVEH D Q
9F37512C Write Cyc2
TELEH
TEHAX
TEHDX
DATA VALID
HIGH Z
Oct. 2002 Rev. 4A ECO #15655
3
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
EDI9F37512C
ORDERING INFORMATION
Part Number EDI9F37512C45MMC EDI9F37512C55MMC Speed (ns) 45 55 Package No. 418 418
PACKAGE DESCRIPTION PACKAGE NO. 418: 72 PIN ZIP
0.125 DIA. TYP. (2 PLCS.)
0.133 REF.
4.255 MAX. 3.984
0.300 MAX.
0.720 MAX. 0.400 0.250 0.080 REF.
9F37512C Pkg
P1 0.050 TYP. 3.750 0.250 0.060 R. 0.130 REF. 0.220 MIN.
ALL DIMENSIONS ARE IN INCHES
White Electronic Designs Corporation (508) 366-5151 www.whiteedc.com
4
Oct. 2002 Rev. 4A ECO #15655
DATASHEET APPROVALS
EDI PART NO. APPROVAL:
JUAN GUZMAN
ED19F37512C
ECO# 15655 NEW REV 4A DATE
10/8/02
DATE
10/8/02
INITIAL
L.K.
CORRECTION ON PAGES
MUKESH TRIVEDI M.A. PAUL MARIEN LARRY WINROTH DAVE KELLY MARK DOWNEY DAVE HARRISON TONY LEE BOB KHEDERIAN LUIS ESTELLA
10/10/02
10/10/02
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