Details, datasheet, quote on part number: M68AF031AL
PartM68AF031AL
Category
Description256Kbit X 8, 70ns
CompanyST Microelectronics, Inc.
DatasheetDownload M68AF031AL datasheet
  

 

Features, Applications

x 8 bits SRAM with OUTPUT ENABLE EQUAL CYCLE and ACCESS TIME: 70ns LOW STANDBY CURRENT LOW VCC DATA RETENTION: 2V TRI-STATE COMMON I/O AUTOMATIC POWER DOWN

TABLE OF CONTENTS SUMMARY DESCRIPTION. 3 Figure 2. Logic Diagram. 3 Table 1. Signal Names. 3 Figure 3. SO Connections. 4 Figure 4. DIP Connections. 4 Figure 5. Block Diagram. 5 MAXIMUM RATING. 5 Table 2. Absolute Maximum Ratings. 5 DC AND AC PARAMETERS. 6 Table 3. Operating and AC Measurement Conditions. 6 Figure 6. AC Measurement I/O Waveform. 6 Figure 7. AC Measurement Load Circuit. 6 Table 4. Capacitance. 7 Table 5. DC Characteristics. 7 OPERATION. 8 Table 6. Operating Modes. 8 Read Mode. 8 Figure 8. Address Controlled, Read Mode AC Waveforms. 8 Figure 9. Chip Enable or Output Enable Controlled, Read Mode AC Waveforms. 9 Figure 10. Chip Enable Controlled, Standby Mode AC Waveforms. 9 Table 7. Read and Standby Mode AC Characteristics. 10 Write Mode. 11 Figure 11. Write Enable Controlled, Write AC Waveforms. 11 Figure 12. Chip Enable Controlled, Write AC Waveforms. 12 Table 8. Write Mode AC Characteristics. 13 Figure 13. Low VCC Data Retention AC Waveforms. 14 Table 9. Low VCC Data Retention Characteristics. 14 PACKAGE MECHANICAL. - 28 lead Plastic Small Outline, Package Outline. - 28 lead Plastic Small Outline, Package Mechanical Data. - 28 pin Plastic DIP, 600 mils width, Package Outline. - 28 pin Plastic DIP, n600 mils width, Package Mechanical Data. 16 PART NUMBERING. 17 Table 12. Ordering Information Scheme. 17 REVISION HISTORY. 18 Table 13. Document Revision History. 18

SUMMARY DESCRIPTION The a 256 Kbit (262,144 bit) CMOS SRAM, organized as 32,768 bytes. The device features fully static operation requiring no external clocks or timing strobes, with equal address access and cycle times. It requires a single to 5.5V supply. This device has an automatic power-

down feature, reducing the power consumption by over 99% when deselected. The M68AF031AL is available in SO28 and in PDIP28 packages.

A0-A14 Address Inputs Data Input/Output Chip Enable Output Enable Write Enable Supply Voltage Ground Not Connected Internally


 

Some Part number from the same manufacture ST Microelectronics, Inc.
M68AF031AM55MS6T 256 Kbit (32K X 8) 5.0V Asynchronous SRAM
M68AF127B 1 Mbit (128K X8) 5.0V Asynchronous SRAM
M68AF127BB 1mbit 128k X8, 5v Asynchronous SRAM
M68AF127BL 128Kbit X 8, 55ns, 70ns
M68AF127BM55MC6T 1 Mbit (128K X8) 5.0V Asynchronous SRAM
M68AF127BMC 1mbit 128k X8, 5v Asynchronous SRAM
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M68AR256ML70ZB6 4 Mbit (256K X16) 1.8V Asynchronous SRAM
M68AR512D 8 Mbit (512K X16) 1.8V Asynchronous SRAM
M68AR512DL 512Kbit X 16, 70ns, Two ce
M68AR512DN70ZB1T 8 Mbit 512k X16 1.8v Asynchronous SRAM

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