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IS46DR32801A

ISSI
Part Number IS46DR32801A
Manufacturer ISSI
Description 8Mx32 256Mb DDR2 DRAM
Published Aug 1, 2016
Detailed Description IS43DR32800A, IS43/46DR32801A 8Mx32 256Mb DDR2 DRAM PRELIMINARY INFORMATION SEPTEMBER 2010 FEATURES • Vdd = 1...
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IS46DR32801A
IS46DR32801A


Overview
IS43DR32800A, IS43/46DR32801A 8Mx32 256Mb DDR2 DRAM PRELIMINARY INFORMATION SEPTEMBER 2010 FEATURES • Vdd = 1.
8V ±0.
1V, Vddq = 1.
8V ±0.
1V • JEDEC standard 1.
8V I/O (SSTL_18-compatible) • Double data rate interface: two data transfers per clock cycle • Differential data strobe (DQS, DQS) • 4-bit prefetch architecture • On chip DLL to align DQ and DQS transitions with CK • 4 internal banks for concurrent operation • Programmable CAS latency (CL) 3, 4, 5, and 6 supported • Posted CAS and programmable additive latency (AL) 0, 1, 2, 3, 4, and 5 supported • WRITE latency = READ latency - 1 tCK • Programmable burst lengths: 4 or 8 • Adjustable data-output drive strength, full and reduced strength options • On-die termination (ODT) DESCRIPTION ISSI's 256Mb DDR2 SDRAM uses a double-data-rate architecture to achieve high-speed operation.
The double-data rate architecture is essentially a 4n-prefetch architecture, with an interface designed to transfer two data words per clock cycle at the I/O balls.
The 256Mb DDR2 SDRAM is provided in a wide bus x32 format, designed to offer a smaller footprint and support compact designs.
ADDRESS TABLE Parameter Configuration Refresh Count Row Addressing Column Addressing Bank Addressing Precharge Addressing 8M x 32 Standard Page Size Option 2M x 32 x 4 banks 4K/64ms A0-A11 A0-A8 BA0, BA1 A10/AP 8M x 32 Reduced Page Size Option 2M x 32 x 4 banks 8K/64ms A0-A12 A0-A7 BA0, BA1 A10/AP OPTIONS • Configuration: 8M x 32 (IS43DR32800A Standard Page - 4K refresh) 8M x 32 (IS43/46DR32801A Reduced Page - 8K refresh) • Package: x32: 126 WBGA KEY TIMING PARAMETERS Speed Grade -37C -5B • Timing – Cycle time 3.
0ns @CL=5, DDR2-667D 3.
75ns @CL=4, DDR2-533C 5.
0ns @CL=3, DDR2-400B • Temperature Range: Commercial (0°C ≤ Tc ≤ 85°C; 0°C ≤ Ta ≤ 70°C) Industrial (–40°C ≤ Tc ≤ 95°C; –40°C ≤ Ta ≤ 85°C) Automotive, A1 (–40°C ≤ Tc ≤ 95°C; –40°C ≤ Ta ≤ 85°C) Automotive, A2 (–40°C ≤ Tc ≤ 105°C; –40°C ≤ Ta ≤ 105°C) Tc = Case...


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