W9864G6 WINBOND [Winbond], W9864G6 Datasheet - Page 3

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W9864G6

Manufacturer Part Number
W9864G6
Description
1M x 4 BANKS x 16 BITS SDRAM
Manufacturer
WINBOND [Winbond]
Datasheet

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1. GENERAL DESCRIPTION
W9864G6DB is a high-speed synchronous dynamic random access memory (SDRAM), organized as
1M words × 4 banks × 16 bits. Using pipelined architecture and 0.175 µm process technology,
W9864G6DB delivers a data bandwidth of up to 286M bytes per second (-7).
W9864G6DB -7.
Accesses to the SDRAM are burst oriented. Consecutive memory location in one page can be
accessed at a burst length of 1, 2, 4, 8 or full page when a bank and row is selected by an ACTIVE
command. Column addresses are automatically generated by the SDRAM internal counter in burst
operation. Random column read is also possible by providing its address at each clock cycle. The
multiple bank nature enables interleaving among internal banks to hide the precharging time.
By having a programmable Mode Register, the system can change burst length, latency cycle,
interleave or sequential burst to maximize its performance. W9864G6DB is ideal for main memory in
high performance applications.
2. FEATURES
3. AVAILABLE PART NUMBER
2.7V − 3.6V power supply
1048576 words × 4 banks × 16 bits organization
Self refresh current: Standard and low power
CAS latency: 2 and 3
Burst Length: 1, 2, 4, 8, and full page
Sequential and Interleave burst
Burst read, single write operation
Byte data controlled by DQM
Power-down Mode
Auto-precharge and controlled precharge
4K refresh cycles/ 64 mS
Interface: LVTTL
Packaged in BGA 60 balls pitch = 0.65 mm, using PB free materials
PART NUMBER
W9864G6DB-7
SPEED (CL = 3)
143 MHz
- 3 -
Publication Release Date: January 27, 2003
SELF REFRESH CURRENT (MAX.)
W9864G6DB
1 mA
Revision A1

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