![](http://datasheet.mmic.net.cn/170000/W986432DH-6_datasheet_10290659/W986432DH-6_3.png)
W986432DH
Publication Release Date: July 30, 2002
- 3 -
Revision A5
1. GENERAL DESCRIPTION
W986432DH is a high-speed synchronous dynamic random access memory (SDRAM), organized as
512K words x 4 banks x 32 bits. Using pipelined architecture and 0.175
m process technology,
W986432DH delivers a data bandwidth of up to 800M bytes per second (-5). For different application,
W986432DH is sorted into the following speed grades: -5, -6, -7. The -5 parts can run up to 200
MHz/CL3. The -6 parts can run up to 166 MHz/CL3. The -7 parts can run up to 143 MHz/CL3. For
handheld device application, we also provide low power option, the grade of -7L, with Self Refresh
Current under 400
A and work well at 2.7V during Self Refresh Mode. For special application, we
provide extended temperature option the grade of -6I can work well in wide temperature from -25
° C to
85
° C.
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. W986432DH is ideal for main memory in
high performance applications.
2. FEATURES
3.3V
±0.3V power supply
524288 words x 4 banks x 32 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 86-pin TSOP II, 400 mil - 0.50
3. AVAILABLE PART NUMBER
PART NUMBER
SPEED (CL = 3)
SELF REFRESH
CURRENT (MAX.)
OPERATING
TEMPERATURE
W986432DH-5
200 MHz
1 mA
0
° C 70° C
W986432DH-6
166 MHz
1 mA
0
° C 70° C
W986432DH-6I
166 MHz
400
A
-25
° C 85° C
W986432DH-7
143 MHz
1 mA
0
° C 70° C
W986432DH-7L
143 MHz
400
A
0
° C 70° C