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K4H640838D-TLA0 Datasheet(PDF) 2 Page - Samsung semiconductor |
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K4H640838D-TLA0 Datasheet(HTML) 2 Page - Samsung semiconductor |
2 / 53 page - 2 - REV. 1.0 November. 2. 2000 128Mb DDR SDRAM Revision History Version 0 (May, 1998) - First version for internal review Version 0.1(June, 1998) - Added x4 organization Version 0.2(Sep,1998) 1. Added "Issue prcharge command for all banks of the device" as the fourth step of power-up squence. 2. In power down mode timing diagram, NOP condition is added to precharge power down exit. Version 0.3(Dec,1998) - Added QFC Function. - Added DC current value - Reduce I/O capacitance values Version 0.4(Feb,1999) -Added DDR SDRAM history for reference(refer to the following page) -Added low power version DC spec Version 0.5(Apr,1999) -Revised following first showing for JEDEC standard -Added DC target current based on new DC test condition Version 0.6(July 1,1999) 1.Modified binning policy From To -Z (133Mhz) -Z (133Mhz/266Mbps@CL=2) -8 (125Mhz) -Y (133Mhz/266Mbps@CL=2.5) -0 (100Mhz) -0 (100Mhz/200Mbps@CL=2) 2.Modified the following AC spec values *1 : Changed description method for the same functionality. This means no difference from the previous version. 3.Changed the following AC parameter symbol From. To. Output data access time from CK/CK tDQCK tAC Version 0.61(August 9,1999) - Changed the some values of "write with auto precharge" table for different bank in page 31. From. To. -Z -0 -Z -Y -0 tAC +/- 0.75ns +/- 1ns +/- 0.75ns +/- 0.75ns +/- 0.8ns tDQSCK +/- 0.75ns +/- 1ns +/- 0.75ns +/- 0.75ns +/- 0.8ns tDQSQ +/- 0.5ns +/- 0.75ns +/- 0.5ns +/- 0.5ns +/- 0.6ns tDS/tDH 0.5 ns 0.75 ns 0.5 ns 0.5 ns 0.6 ns tCDLR*1 2.5tCK-tDQSS 2.5tCK-tDQSS 1tCK 1tCK 1tCK tPRE*1 1tCK +/- 0.75ns 1tCK +/- 1ns 0.9/1.1 tCK 0.9/1.1 tCK 0.9/1.1 tCK tRPST*1 tCK/2 +/- 0.75ns tCK/2 +/- 1ns 0.4/0.6 tCK 0.4/0.6 tCK 0.4/0.6 tCK tHZQ*1 tCK/2 +/- 0.75ns tCK/2 +/- 1ns +/- 0.75ns +/- 0.75ns +/-0.8ns Asserted command For Different Bank 3 4 Old New Old New Read Legal Illegal Legal Illegal Read + AP*1 Legal Illegal Legal Illegal |
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