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| Features * * * * * * * * * * * * * * * 16 Mbit SRAM Multi Chip Module Allows 32-, 16- or 8-bit access configuration Operating Voltage: 3.3V + 0.3V, 5V Tolerant Access Time: - 25 ns, 20 ns - 18 ns (preliminary information) Very Low Power Consumption - Active: 595 mW per byte (Max) @ 20 ns(1), 415mW per byte (Max) @ 50ns(2) - Standby: 15 mW (Typ) Military Temperature Range: -55 to +125C TTL-Compatible Inputs and Outputs Asynchronous Die manufactured on Atmel 0.25 m Radiation Hardened Process No Single Event Latch Up below LET Threshold of 80 MeV/mg/cm2 Tested up to a Total Dose of 300 krads (Si) according to MIL-STD-883 Method 1019 ESD Better than 2000V Quality Grades: - QML-Q or V with SMD 5962-06229 - ESCC 950 Mils Wide MQFP 68 Package Mass : 8.5 grams 1. For AT68166FT-20 only. 540mW for AT68166FT-25. 2. For AT68166FT-20 only. 450mW for AT68166FT-25. Rad Hard 16 MegaBit 3.3V 5V Tolerant SRAM MultiChip Module AT68166FT Notes: Description The AT68166FT is a 16Mbit SRAM packaged in a hermetic Multi Chip Module (MCM) for space applications. The AT68166FT MCM incorporates four 4Mbit AT60142FT SRAM dice. It can be organized as either one bank of 512Kx8, two banks of 512Kx16 or four banks of 512Kx8. It combines rad-hard capabilities, a latch-up threshold of 80MeV.cm/mg, a Multiple Bit Upset immunity and a total dose tolerance of 300Krads, with a fast access time. The MCM packaging technology allows a reduction of the PCB area by 50% with a weight savings of 75% compared to four 4Mbit packages. Thanks to the small size of the 4Mbit SRAM die, Atmel has been able to accommodate the assembly of the four dice on one side of the package which facilitates the power dissipation. The compatibility with other products allows designers to easily migrate to the Atmel AT68166FT memory. The AT68166FT is powered at 3.3V and is 5V tolerant. The AT68166FT is processed according to the test methods of the latest revision of the MIL-PRF-38535 or the ESCC 9000. 7531G-AERO-07/07 Block Diagram Figure 1. AT68166FT Block Diagram CS3 WE3 CS2 WE2 CS1 WE1 CS0 WE0 A[18:0] OE BANK3 512k x 8 BANK2 512k x 8 BANK1 512k x 8 BANK0 512k x 8 I/O[31:24] or I/O2[31:16] or I/O3[7:0] I/O[23:16] or I/O2[15:0] or I/O2[7:0] I/O[15:8] or I/O1[31:16] or I/O1[7:0] I/O[7:0] or I/O1[15:0] or I/O[7:0] Figure 2. 512K x 8 Banks Block Diagram (AT60142FT) A0 A10 I/Ox0 I/Ox7 CSx WEx OE Packages AT68166FT is packed in MQFP68. Access Times 25 ns AT68166FT YM 20 ns YS 18 ns YS The pin assignment depends on the access time. There are 2 versions: - - YM package where 3 pins are not connected. YS package where the 3 above pins are connected to GND or VCC. 2 AT68166FT 7531G-AERO-07/07 AT68166FT Pin Configuration Table 1. AT68166FT pin assignment in YS package Lead 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Note: Signal I/O0[0] I/O0[1] I/O0[2] I/O0[3] I/O0[4] I/O0[5] I/O0[6] I/O0[7] GND I/O1[0] I/O1[1] I/O1[2] I/O1[3] I/O1[4] I/O1[5] I/O1[6] I/O1[7] Lead 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Signal VCC A11 A12 A13 A14 A15 A16 CS0 OE CS1 A17 WE1 WE2 WE3 A18 GND VCC Lead 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 Signal I/O3[7] I/O3[6] I/O3[5] I/O3[4] I/O3[3] I/O3[2] I/O3[1] I/O3[0] GND I/O2[7] I/O2[6] I/O2[5] I/O2[4] I/O2[3] I/O2[2] I/O2[1] I/O2[0] Lead 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Signal VCC A10 A9 A8 A7 A6 WE0 CS3 GND CS2 A5 A4 A3 A2 A1 A0 VCC In YM package leads 33, 34 and 68 are not connected. 3 7531G-AERO-07/07 Figure 3. AT68166FT pin assignment in YM package NC A0 A1 A2 A3 A4 A5 CS2 GND CS3 WE0 A6 A7 A8 A9 A10 VCC I/O0[0] I/O0[1] I/O0[2] I/O0[3] I/O0[4] I/O0[5] I/O0[6] I/O0[7] GND I/O1[0] I/O1[1] I/O1[2] I/O1[3] I/O1[4] I/O1[5] I/O1[6] I/O1[7] 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 Figure 4. AT68166FT pin assignment in YS package VCC A0 A1 A2 A3 A4 A5 CS2 GND CS3 WE0 A6 A7 A8 A9 A10 VCC 4 AT68166FT 7531G-AERO-07/07 VCC A11 A12 A13 A14 A15 A16 CS0 0E CS1 A17 WE1 WE2 WE3 A18 GND VCC 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 I/O0[0] I/O0[1] I/O0[2] I/O0[3] I/O0[4] I/O0[5] I/O0[6] I/O0[7] GND I/O1[0] I/O1[1] I/O1[2] I/O1[3] I/O1[4] I/O1[5] I/O1[6] I/O1[7] 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 VCC A11 A12 A13 A14 A15 A16 CS0 0E CS1 A17 WE1 WE2 WE3 A18 NC NC 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 AT68166FT (top view) 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 I/O2[0] I/O2[1] I/O2[2] I/O2[3] I/O2[4] I/O2[5] I/O2[6] I/O2[7] GND I/O3[0] I/O3[1] I/O3[2] I/O3[3] I/O3[4] I/O3[5] I/O3[6] I/O3[7] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 AT68166FT (top view) 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 I/O2[0] I/O2[1] I/O2[2] I/O2[3] I/O2[4] I/O2[5] I/O2[6] I/O2[7] GND I/O3[0] I/O3[1] I/O3[2] I/O3[3] I/O3[4] I/O3[5] I/O3[6] I/O3[7] AT68166FT Pin Description Table 2. Pin Names Name A0 - A18 I/O0 - I/O31 CS0 - CS3 WE0 - WE3 OE VCC GND(1) Note: 1. The package lid is connected to GND Description Address Inputs Data Input/Output Chip Select Write Enable Output Enable Power Supply Ground Table 3. Truth Table(1) CSx H L L L Note: WEx X H L H OE X L X H Inputs/Outputs Z Data Out Data In Z Mode Standby Read Write Output Disable 1. L=low, H=high, X= H or L, Z=high impedance. 5 7531G-AERO-07/07 Electrical Characteristics Absolute Maximum Ratings* Supply Voltage to GND Potential:.........................-0.5V to +7V DC Input Voltage:........................................GND -0.5V to 4.6V DC Output Voltage High Z State: ................GND -0.5V to 4.6V Storage Temperature: .................................... -65C to +150C Output Current Into Outputs (Low): ............................... 20 mA Electro Statics Discharge Voltage:..... .........> 2000V (MIL STD 883D Method 3015.3) *NOTE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Military Operating Range Operating Voltage 3.3 + 0.3V Operating Temperature -55C to + 125C Recommended DC Operating Conditions Parameter Vcc GND VIL VIH Note: Description Supply voltage Ground Input low voltage Input high voltage Min 3 0.0 GND - 0.3 2.2 Typ 3.3 0.0 0.0 - Max 3.6 0.0 0.8 5.5V(1) Unit V V V V 1. 5.8V in transient conditions. Capacitance Parameter Cin(1) (OE and Ax) Cin(1) (CSx and WEx) Cio(1) Note: Description Input capacitance Input capacitance I/O capacitance Min - - - Typ - - - Max 48 12 12 Unit pF pF pF 1. Guaranteed but not tested. 6 AT68166FT 7531G-AERO-07/07 AT68166FT DC Parameters Maximum Parameter IIX(1) IOZ(1) Description Input leakage current Output leakage current Input Leakage Current (OE & Axx) Input Leakage Current (WE & CS) IOZH(2) at 5.5V VOL(3) VOH(4) Notes: 1. 2. 3. 4. Output Leakage Current Output low voltage Output high voltage Minimum -1 -1 Typical - - AT68166FT-25 AT68166FT-20 AT68166FT-18 1 1 1 1 1 1 Unit A A - - 10 6 6 A IIH(2) at 5.5V - - 5 2 2 A - - 2.4 - - - 5 0.4 - 1.5 0.4 - 1.5 0.4 - A V V GND < VIN < VCC, GND < VOUT < VCC Output Disabled. VIN = 5.5V, VOUT = 5.5V, Output Disabled. VCC min. - IOL = 6 mA VCC min. IOH = -4 mA 7 7531G-AERO-07/07 Consumption Symbol Description Standby Supply Current Standby Supply Current TAVAV/TAVAW Test Condition AT68166FT-25 AT68166FT-20 AT68166FT-18 (preliminary) Unit Value ICCSB(1) - 10 7 7.5 mA max ICCSB1(2) - 8 6 7 mA max ICCOP(3) Read per byte Dynamic Operating Current 18 ns 20 ns 25 ns 50 ns 1 s 18 ns 20 ns 25 ns 50 ns 1 s - - 150 85 15 - - 150 125 110 - 165 145 80 12 - 140 135 115 105 170 165 145 80 12 145 140 135 115 105 mA max ICCOP(4) Write per byte Dynamic Operating Current mA max Notes: 1. 2. 3. 4. All CSx >VIH All CSx > VCC - 0.3V F = 1/TAVAV, Iout = 0 mA, WEx = OE = VIH, VIN = GND/VCC, VCC max. F = 1/TAVAW, Iout = 0 mA, WEx = VIL, OE = VIH , VIN = GND/VCC, VCC max. Data Retention Mode Atmel CMOS RAM's are designed with battery backup in mind. Data retention voltage and supply current are guaranteed over temperature. The following rules insure data retention: 1. During data retention chip select CSx must be held high within VCC to VCC -0.2V. 2. Output Enable (OE) should be held high to keep the RAM outputs high impedance, minimizing power dissipation. 3. During power-up and power-down transitions CSx and OE must be kept between VCC + 0.3V and 70% of VCC. 4. The RAM can begin operation > tR ns after VCC reaches the minimum operation voltages (3V). Figure 5. Data Retention Timing vcc CSx 8 AT68166FT 7531G-AERO-07/07 AT68166FT Data Retention Characteristics Parameter VCCDR tCDR tR Description VCC for data retention Chip deselect to data retention time Operation recovery time Min 2.0 0.0 tAVAV (1) Typ TA = 25C - - - 6 Max - - - (AT68166FT-25) Unit V ns ns ICCDR (2) Data retention current - 3 4.5 (AT68166FT-20) 5 (AT68166FT-18) mA 1. 2. TAVAV = Read cycle time. All CSx = VCC, VIN = GND/VCC. 9 7531G-AERO-07/07 AC Characteristics Temperature Range:................................................ -55 +125C Supply Voltage: ....................................................... 3.3 +0.3V Input Pulse Levels: .................................................. GND to 3.0V Input Rise and Fall Times:....................................... 3ns (10 - 90%) Input and Output Timing Reference Levels: ............ 1.5V Output Loading IOL/IOH:............................................ See Figure 3 Figure 6. AC Test Loads Waveforms General Specific (TWLQZ, TWHQX, TELQX, TEHQZ TGLQX, TGHQZ) Write Cycle Table 4. Write cycle timings(1) AT68166FT-25 AT68166FT-20 AT68166FT-18 (preliminary) min 18 2 10 7 11 9 0 1 5 max 9 Unit ns ns ns ns ns ns ns ns ns ns Symbol TAVAW TAVWL TAVWH TDVWH TELWH TWLQZ TWLWH TWHAX TWHDX TWHQX Parameter Write cycle time Address set-up time Address valid to end of write Data set-up time CS low to write end Write low to high Z(2) Write pulse width Address hold from end of write Data hold time Write high to low Z(2) min 20 2 14 9 12 12 0 2 5 max 10 - min 20 2 11 8 12 9 0 1 5 max 10 - Notes: 1. Timings figures applicable for 8-bit, 16-bit and 32-bit mode. 2. Parameters guaranteed, not tested, with output loading 5 pF. (See "AC Test Loads Waveforms" on page 10.) 10 AT68166FT 7531G-AERO-07/07 AT68166FT Figure 7. Write Cycle 1. WE Controlled, OE High During Write ADDRESS CSx E WEx E OE I/Os Figure 8. Write Cycle 2. WE Controlled, OE Low ADDRESS CSx WEx E E I/Os Figure 9. Write Cycle 3. CS Controlled ADDRESS CSx WEx E I/Os The internal write time of the memory is defined by the overlap of CS Low and WE LOW. Both signals must be activated to initiate a write and either signal can terminate a write by going in active mode. The data input setup and hold timing should be referenced to the active edge of the signal that terminates the write. Data out is high impedance if OE= VIH. 11 7531G-AERO-07/07 Read Cycle Table 5. Read cycle timings(1) AT68166FT-25 AT68166FT-20 AT68166FT-18 (preliminary) min 18 5 5 2 max 18 18 9 9 9 Unit ns ns ns ns ns ns ns ns ns Symbol TAVAV TAVQV TAVQX TELQV TELQX TEHQZ TGLQV TGLQX TGHQZ Notes: Parameter Read cycle time Address access time Address valid to low Z Chip-select access time CS low to low Z(2) CS high to high Z(2) Output Enable access time OE low to low Z(2) OE high to high Z (2) min 25 5 5 2 - max 25 25 10 12 10 min 20 5 5 2 - max 20 20 9 10 9 1. Timings figures applicable for 8-bit, 16-bit and 32-bit mode. 2. Parameters guaranteed, not tested, with output loading 5 pF. (See "AC Test Loads Waveforms" on page 10.) 12 AT68166FT 7531G-AERO-07/07 AT68166FT Figure 10. Read Cycle nb 1: Address Controlled (CS = OE = VIL, WE = VIH) ADDRESS DOUT Figure 11. Read Cycle nb 2: Chip Select Controlled (WE = VIH) CSx OE DOUT 13 7531G-AERO-07/07 Typical Applications 32-bit mode application This section presents some standard implementations of the AT68166FT in application. When used on a 32-bit (word) application, the module shall be connected as follow : * * * The 32 lines of data are connected to distinct data lines The four CSx are connected together and linked to a single host CS output Each one of the four WEx is connected to a dedicated WE line on the host to allow byte, half word and word format write. Figure 12. 32-bit typical application ( 1 SRAM bank) AT68166FT RAMS0* RAMOE0* RWE[3:0]* CS[3:0] OE WE[3:0] A[17:0] I/O[31:0] A A[19:2] D[31:0] A[19:2] D[31:0] D TSC695F A[27:0] D[31:0] 16-bit mode application When used on a 16-bit (half word) application, the module can be connected as presented in the following figure. This allows use of a single AT68166FT part for two SRAM memory banks. All input controls of the AT68166FT not used in the application shall be pulled-up. Figure 13. 16-bit typical application (two SRAM banks) RAMOE[1:0]* RAMS1* RWE0* RAMS0* RWE0* OE AT68166FT A[17:0] I/O[31:16] I/O[15:0] A[18:1] D[31:16] D[31:16] A[18:1] D[31:0] A D CS[3:2] WE[3:2] CS[1:0] WE[1:0] TSC695F A[27:0] D[31:0] 8-bit mode application When used on a 8-bit (byte) application, the module can be connected as presented in the following figure. This allows use of a single AT68166FT part for up to four SRAM memory banks. All input controls of the AT68166FT not used in the application shall be pulled-up. 14 AT68166FT 7531G-AERO-07/07 AT68166FT Figure 14. 8-bit typical application (two SRAM banks) RAMOE[1:0]* RAMS2* RWE0* RAMS2* RWE0* RAMS1* RWE0* OE CS[3] WE[3] CS[2] WE[2] CS[1] WE[1] CS[0] WE[0] AT68166FT A[17:0] A[17:0] D[31:24] D[31:24] D[31:24] D[31:24] A[17:0] D[31:0] A D I/O[31:24] I/O[23:16] I/O[15:8] I/O[7:0] TSC695F RAMS0* RWE0* A[27:0] D[31:0] 15 7531G-AERO-07/07 Ordering Information Part Number AT68166FT AT68166FT-YM25-E 5962-0622901QXC 5962-0622901VXC 5962R0622901VXC AT68166FT-YM25-SCC AT68166FT-YS20-E AT68166FT-YS20-MQ(2) AT68166FT-YS20-SV (2) (2) (2) Temperature Range Speed Package Flow 25C -55 to +125C -55 to +125C -55 to +125C -55 to +125C 25C -55 to +125C -55 to +125C -55 to +125C -55 to +125C 25C (1)(2) 25 ns 25 ns 25 ns 25 ns 25 ns 20 ns 20 ns 20 ns 20 ns 20 ns 18 ns 18 ns 18 ns 18 ns 18 ns MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 MQFPT68 Engineering Samples QML Q QML V QML V RHA ESCC Engineering Samples QML Q QML V QML V RHA ESCC Engineering Samples QML Q QML V QML V RHA ESCC AT68166FT-YS20-SR AT68166FT-YS20-SCC AT68166FT-YS18-E(1) AT68166FT-YS18-MQ AT68166FT-YS18-SV -55 to +125C -55 to +125C -55 to +125C -55 to +125C Note: (1)(2) AT68166FT-YS18-SR(1)(2) AT68166FT-YS18-SCC(1)(2) 1. Please contact your local sales office. 2. Will be replaced by SMD part number when available. 16 AT68166FT 7531G-AERO-07/07 AT68166FT Package Drawings 68-lead Quad Flat Pack (950 Mils) with non conductive tie bar Note: Note: Lid is connected to Ground. YM and YS package drawings are identical. 17 7531G-AERO-07/07 Document Revision History Changes from 7531C to 7531D Changes from 7531D to 7531E Changes from 7531E to 7531F Changes from 7531F to 7531G 1. Update of access time parameters. 1. Added YS package. 1. Updated ordering information. 1. Split datasheet into two seperate documents: removed AT68166F from this document. Please refer to document 7747 on the Atmel web site. 18 AT68166FT 7531G-AERO-07/07 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel: (33) 4-76-58-30-00 Fax: (33) 4-76-58-34-80 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel: (44) 1355-803-000 Fax: (44) 1355-242-743 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Literature Requests www.atmel.com/literature Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL'S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL'S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically providedotherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel'sAtmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. (c)2007 Atmel Corporation. All rights reserved. Atmel (R), logo and combinations thereof, and Everywhere You Are (R) are the trademarks or registered trademarks, of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Printed on recycled paper. 7531G-AERO-07/07 |
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