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M68AF511AL 数据表(PDF) 2 Page - STMicroelectronics

部件名 M68AF511AL
功能描述  4 Mbit (512K x8), 5V Asynchronous SRAM
PDF  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M68AF511AL 数据表(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 and SO Connections . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . ... . . .. .. ... . . 4
Figure 4. 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 5. AC Measurement I/O Waveform . . . . . . . . . . . . . . . . . . . . . . . ... .. .. . . . . .. . . .. . ... 6
Figure 6. 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 7. Address Controlled, Read Mode AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8. Chip Enable or Output Enable Controlled, Read Mode AC Waveforms. . . . . . . . . . . . . . . 9
Table 7. Read and Standby Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Write Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 10. Write Enable Controlled, Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 11. Chip Enable Controlled, Write AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 8. Write Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 9. Low VCC Data Retention Characteristics. . . . . . . . . . . . . . . . . . ... .. .. . . . . .. . . .. . . . 13
PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TSOP 32 Type II - 32 lead Plastic Thin Small Outline Type II, Package Outline . . . . . . . . . . . . . . 14
TSOP 32 Type II - 32 lead Plastic Thin Small Outline Type II, Package Mechanical Data . . . . . . . 14
SO32 - 32 lead Plastic Small Outline, Package Outline . . . . . . . . . . . . . . . . . . . . . . .... . . . ....15
SO32 - 32 lead Plastic Small Outline, Package Mechanical Data. . . . . . . . . . . . . . . . . . . . . . . . . . 15
PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . ... .. . . . 16
Table 12. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
REVISION HISTORY. .... . . . . . . . . ... .. . . . . . . . . . ... . ... ... . . . . . . . . ... .. . . . . . . . . . ... .17
Table 13. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17



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