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M65KG512AB Datasheet(PDF) 5 Page - STMicroelectronics

Part # M65KG512AB
Description  512Mbit (4 banks x 8 Mb x 16) 1.8 V supply, DDR low power SDRAM
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M65KG512AB Datasheet(HTML) 5 Page - STMicroelectronics

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M65KG526AB
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Figure 1.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2.
Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 3.
Simplified command state diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 4.
AC measurement I/O waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 5.
AC measurement load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 6.
Definition of command and address inputs timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 7.
Definition of Read timings 1/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 8.
Definition of Read timings 2/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 9.
Consecutive Bank(Row) Activate command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 10.
Read followed by Read in same bank and row . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 11.
Read followed by Read in a different bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 12.
Read with Auto Precharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 13.
Read followed by Auto Precharge ac waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 14.
Read operation (Burst lengths = 2, 4 and 8, CAS latency = 3) . . . . . . . . . . . . . . . . . . . . . . 37
Figure 15.
Burst Terminate during Read operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 16.
Write followed by Write in same bank and row . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 17.
Write followed by Write in a different bank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 18.
Write operation with Auto Precharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 19.
Write with Auto Precharge ac Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 20.
Write operation (Burst lengths = 2, 4 and 8, CAS latency = 1) . . . . . . . . . . . . . . . . . . . . . . 41
Figure 21.
AC Write ac waveforms (data masking using LDQM/UDQM). . . . . . . . . . . . . . . . . . . . . . . 42
Figure 22.
Mode Register/Extended Mode Register Set commands ac waveforms . . . . . . . . . . . . . . 43
Figure 23.
Read followed by Write using the Burst Read Terminate command (BST) . . . . . . . . . . . . 44
Figure 24.
Write followed by Read (Write completed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 25.
Write followed by Read in the same Bank and Row (Write Interrupted). . . . . . . . . . . . . . . 46
Figure 26.
Power-Up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 27.
Auto Refresh command ac waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 28.
Self Refresh Entry and Exit commands ac waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 29.
Deep Power-Down Entry command ac waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 30.
Deep Power-Down Exit ac waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51


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