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M68AW128ML Datasheet(PDF) 2 Page - STMicroelectronics

Part No. M68AW128ML
Description  2 Mbit (128K x16) 3.0V Asynchronous SRAM
Download  20 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M68AW128ML Datasheet(HTML) 2 Page - STMicroelectronics

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TABLE OF CONTENTS
SUMMARY DESCRIPTION. . . . . . . . . . . . . . . . . . . . . .... . . . .... . . . . . . . . ... .. .. .. . . . . . ... . . 3
Figure 2. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . ... .. . ... 3
Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . .... ... .. . . . . ... . . . . . . . . . . ... . . . ..3
Figure 3. TSOP Connections. . . . . . . . . . . . . . . . . . . . . .... ... .. . . . . ... . . . . . . . . . . ... . . . ..4
Figure 4. TFBGA Connections (Top view through package). . . . . . . . . . . . . . . . . . . . . . . .... ... . 5
Figure 5. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . ... . . . . . . . . . ... ..... . 6
Table 2. Absolute Maximum Ratings. . . . . . . . . . . . . . . .... ... .. . . . . ... . . . . . . . . . . ... ... ..6
DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Operating and AC Measurement Conditions. . .... . . . . . . . . . ... . . . . . . . . . ... ..... . 7
Figure 6. AC Measurement I/O Waveform . . . . . . . . . . . . . . . . . . . . . . . ... .. .. . . . . .. . . .. . ... 7
Figure 7. AC Measurement Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . ... .. . ... 8
Table 5. DC Characteristics.... .. . . . ... ... ... .. . ... . . . . . . ... ... .. . . . ... . . . ... .. . ... 8
OPERATION . . . ... . . . . . . ... ... .. . . . ... ... ... .. . ... . . . . . . ... ... .. . . . ... ... ... .. . ... 9
Table 6. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... ... .... ... . 9
Read Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8. Address Controlled, Read Mode AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9. Chip Enable or Output Enable Controlled, Read Mode AC Waveforms. . . . . . . . . . . . . . 10
Figure 10. Chip Enable or UB/LB Controlled, Standby Mode AC Waveforms . . . . . . . . . . . ..... 10
Table 7. Read and Standby Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Write Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. Write Enable Controlled, Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 12. Chip Enable Controlled, Write AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 13. UB/LB Controlled, Write AC Waveforms . . . .... . . . . . . . . . ... . . . . . . . . . ... ..... 13
Table 8. Write Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 14. Low VCC Data Retention AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 9. Low VCC Data Retention Characteristics. . . . . . . . . . . . . . . . . . ... .. .. . . . . .. . . .. . . . 15
PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TSOP44 Type II - 44 lead Plastic Thin Small Outline Type II, Package Outline .... . . . ... .. . . . 16
TSOP 44 Type II - 44 lead Plastic Thin Small Outline Type II, Package Mechanical Data . . . . . . . 16
TFBGA48 6x8mm - 6x8 active ball array, 0.75 mm pitch, Bottom View Package Outline. . . . . . . . 17
TFBGA48 6x8mm - 6x8 active ball array, 0.75 mm pitch, Package Mechanical Data . . . . . . . . . . 17
PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . ... .. . . . 18
Table 12. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
REVISION HISTORY. .... . . . . . . . . ... .. . . . . . . . . . ... . ... ... . . . . . . . . ... .. . . . . . . . . . ... .19
Table 13. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19


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