W989D6DB Datasheet, PDF (4/64 Pages) Winbond – Standard Self Refresh Mode

W989D6DB / W989D2DB
1. GENERAL DESCRIPTION
The Winbond 512Mb Low Power SDRAM is a low power synchronous memory containing
536,870,912 memory cells fabricated with Winbond high performance process technology.
It is designed to consume less power than the ordinary SDRAM with low power features essential for
applications which use batteries. It is available in two organizations: 4,194,304-words × 4 banks × 32
bits or 8,388,608 words × 4 banks × 16 bits. The device operates in a fully synchronous mode, and the
output data are synchronized to positive edges of the system clock and is capable of delivering data at
clock rate up to 166MHz. The device supports special low power functions such as Partial Array Self
Refresh (PASR) and Automatic Temperature Compensated Self Refresh (ATCSR).
The Low Power SDRAM is suitable for 2.5G / 3G cellular phone, PDA, digital still camera, mobile
game consoles and other handheld applications where large memory density and low power
consumption are required. The device operates from 1.8V power supply, and supports the 1.8V
LVCMOS bus interface.
2. FEATURES
 Power supply VDD = 1.7V~1.95V
 VDDQ = 1.7V~1.95V
 Frequency: 166MHz(-6)
 Standard Self Refresh Mode
 Programmable Partial Array Self Refresh
 Power Down Mode
 Deep Power Down Mode (DPD)
 Programmable output buffer driver strength
 Automatic Temperature Compensated Self
Refresh
 CAS Latency: 2 and 3
 Burst Length: 1, 2, 4, 8, and full page
 Refresh: refresh cycle 64mS
 Interface: LVCMOS
 Support package:
54 balls VFBGA (x16)
90 balls VFBGA (x32)
 Operating Temperature Range:
Extended (-25°C ~ +85°C)
Industrial (-40°C ~ +85°C)
3. ORDER INFORMATION
Part Number
W989D6DBGX6I
W989D6DBGX6E
W989D2DBJX6I
W989D2DBJX6E
VDD/VDDQ
1.8V/1.8V
1.8V/1.8V
1.8V/1.8V
1.8V/1.8V
I/O Width
16
16
32
32
Package
54 balls VFBGA
54 balls VFBGA
90 balls VFBGA
90 balls VFBGA
Others
166MHz, -40°C~85°C
166MHz, -25°C~85°C
166MHz, -40°C~85°C
166MHz, -25°C~85°C
Publication Release Date: Mar. 19, 2014
-4-
Revision: A01-001