EDS2532CASG Datasheet, PDF (1/48 Pages) Elpida Memory – 256M bits SDRAM

DATA SHEET
256M bits SDRAM
EDS2532CASG (8M words × 32 bits) _{Specifications}
• Density: 256M bits
• Organization
⎯ 2M words × 32 bits × 4 banks
E• Package: 90-ball FBGA
⎯ Lead-free (RoHS compliant)
• Power supply: VDD, VDDQ = 2.5V ± 0.2V
• Clock frequency: 133MHz/100MHz (max.)
O• 2KB page size
⎯ Row address: A0 to A11
⎯ Column address: A0 to A8
• Four internal banks for concurrent operation
• Interface: LVTTL
L _{• 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): 2, 3
P • Precharge: auto precharge operation for each burst
access
• Refresh: auto-refresh, self-refresh
• Refresh cycles: 4096 cycles/64ms
r ^{⎯ Average refresh period: 15.6μs}
• Operating ambient temperature range
⎯ TA = 0°C to +70°C
o _Features
• ×32 organization
• Single pulsed /RAS
d _{• Burst read/write operation and burst read/single write}
operation capability
uct ^{• Byte control by DQM}
Pin Configurations
/xxx indicates active low signal.
90-ball FBGA
1
2
3
4
5
6
7
A
DQ13 VSS VDD
B
DQ11 DQ15 VSSQ
C
DQ14 DQ12 VDDQ
D
DQ10 DQ9 VSSQ
E
DQ8 VDD VDDQ
F
VSS DQM1 VDD
G
CLK CKE A9
H
NC A8 A7
J
A6 A5 A4
K
A3 DQM3 VDD
L
VSS DQ31 VDDQ
M
DQ29 DQ30 VSSQ
N
DQ25 DQ27 VDDQ
P
DQ28 DQ24 VSSQ
R
DQ26 VSS VDD
VSS VDD DQ2
VDDQ DQ0 DQ4
VSSQ DQ1 DQ3
VDDQ DQ5 DQ6
VSSQ DQ7 VDD
VSS /WE DQM0
/CS /CAS /RAS
NC A11 BA0
BA1 A10 A0
A1 A2 DQM2
VSSQ DQ16 VSS
VDDQ DQ17 DQ18
VSSQ DQ22 DQ20
VDDQ DQ23 DQ19
VSS VDD DQ21
(Top view)
A0 to A11
BA0, BA1
DQ0 to DQ31
/CS
/RAS
/CAS
/WE
DQM0 to DQM3
CKE
CLK
VDD
VSS
VDDQ
Address inputs
Bank select address
Data-input/output
Chip select
Row address strobe
Column address strobe
Write enable
DQ mask enable
Clock enable
Clock input
Power for internal circuit
Ground for internal circuit
Power for DQ circuit
VSSQ
Ground for DQ circuit
NC
No connection
Document No. E0541E21 (Ver. 2.1)
Date Published February 2006 (K) Japan
Printed in Japan
URL: http://www.elpida.com
This product became EOL in March, 2007.
©Elpida Memory, Inc. 2004-2006