M65KG512AB Datasheet, PDF (5/54 Pages) STMicroelectronics – 512Mbit (4 banks x 8 Mb x 16) 1.8 V supply, DDR low power SDRAM

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