PRELIMINARY DATA SHEET
256M bits SDRAM
WTR (Wide Temperature Range)
EDS2532EGBH-TT (8M words × 32 bits)
Pin Configurations
Specifications
• Density: 256M bits
/xxx indicates active low signal.
• Organization
90-ball FBGA
1
2
3
4
5
6
7
8
9
2M words × 32 bits × 4 banks
• Package: 90-ball FBGA
A
B
C
D
E
F
DQ26 DQ24 VSS
DQ28 VDDQ VSSQ
VSSQ DQ27 DQ25
VSSQ DQ29 DQ30
VDDQ DQ31 NC
VSS DQM3 A3
VDD DQ23 DQ21
VDDQ VSSQ DQ19
DQ22 DQ20 VDDQ
DQ17 DQ18 VDDQ
NC DQ16 VSSQ
A2 DQM2 VDD
Lead-free (RoHS compliant) and Halogen-free
• Power supply: VDD, VDDQ = 1.8V ± 0.1V
• Clock frequency: 166MHz/133MHz (max.)
• 2KB page size
Row address: A0 to A11
Column address: A0 to A8
• Four internal banks for concurrent operation
• Interface: LVCMOS
• Burst lengths (BL): 1, 2, 4, 8, full page
• Burst type (BT):
Sequential (1, 2, 4, 8, full page)
Interleave (1, 2, 4, 8)
• /CAS Latency (CL): 3
G
H
J
A4
A7
A5
A8
A6
NC
A9
A10
NC
A0
A1
BA1 A11
CLK CKE
DQM1 NC
BA0 /CS /RAS
/CAS /WE DQM0
VDD DQ7 VSSQ
DQ6 DQ5 VDDQ
DQ1 DQ3 VDDQ
VDDQ VSSQ DQ4
VDD DQ0 DQ2
K
L
NC
• Precharge: auto precharge option for each burst
access
VDDQ DQ8 VSS
VSSQ DQ10 DQ9
VSSQ DQ12 DQ14
DQ11 VDDQ VSSQ
DQ13 DQ15 VSS
• Driver strength: normal, 1/2, 1/4, 1/8
• Refresh: auto-refresh, self-refresh
• Refresh cycles: 4096 cycles/64ms
Average refresh period: 15.6µs
• Operating ambient temperature range
TA = –20°C to +85°C
M
N
P
R
(Top view)
Features
• ×32 organization
• Single pulsed /RAS
A0 to A11
BA0, BA1
DQ0 to DQ31
/CS
/RAS
/CAS
/WE
DQM0 to DQM3
CKE
Address inputs
Bank select address
Data-input/output
Chip select
Row address strobe
Column address strobe
Write enable
• Burst read/write operation and burst read/single write
operation capability
• Byte control by DQM
• Wide temperature range
TA = −20°C to +85°C
DQ mask enable
Clock enable
CLK
Clock input
VDD
VSS
VDDQ
VSSQ
NC
Power for internal circuit
Ground for internal circuit
Power for DQ circuit
Ground for DQ circuit
No connection
Document No. E1200E40 (Ver. 4.0)
Date Published December 2008 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2007-2008
ELPIDA [ ELPIDA MEMORY ]
