EDS2516APTA-75TI-E 데이터 시트보기 (PDF) - Elpida Memory, Inc

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EDS2516APTA-75TI-E

256M bits SDRAM WTR (Wide Temperature Range)

Elpida Memory, Inc 

EDS2516APTA-TI-E

UDQM and LDQM (input pins)

UDQM and LDQM controls input/output buffers. In 16M × 16 products, UDQM and LDQM control upper byte (DQ8

to DQ15) and lower byte (DQ0 to DQ7).

Read operation: If UDQM and LDQM are High, the output buffer becomes High-Z. If the UDQM and LDQM are

Low, the output buffer becomes Low-Z. (The latency of DQM during reading is 2 clocks.)

Write operation: If UDQM and LDQM are High, the previous data is held (the new data is not written). If UDQM and

LDQM are Low, the data is written. (The latency of DQM during writing is 0 clock.)

DQ0 toDQ15 (input/output pins)

Data is input to and output from these pins.

VDD, VSS, VDDQ, VSSQ (Power supply)

VDD and VSS are power supply pins for internal circuits. VDDQ and VSSQ are power supply pins for the output

buffers.

Data Sheet E0677E10 (Ver. 1.0)

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