EDS2516EEBH-TT Datasheet, PDF (1/50 Pages) Elpida Memory – 256M bits SDRAM WTR (Wide Temperature Range)

PRELIMINARY DATA SHEET
256M bits SDRAM
WTR (Wide Temperature Range)
EDS2516EEBH-TT (16M words × 16 bits) _Description
The EDS2516EEBH is a 256M bits SDRAM organized
as 4,194,304 words × 16 bits × 4 banks. All inputs and
Eoutputs are synchronized with the positive edge of the
clock.
It is packaged in 54-ball FBGA.
O^Features
• 1.8V power supply
• Clock frequency: 111MHz (max.)
• LVCMOS interface
• Single pulsed /RAS
L _{• ×16 organization}
• 4 banks can operate simultaneously and
independently
• Burst read/write operation and burst read/single write
operation capability
• Programmable burst length (BL): 1, 2, 4, 8 and full
P _page
• 2 variations of burst sequence
⎯ Sequential (BL = 1, 2, 4, 8, full page)
⎯ Interleave (BL = 1, 2, 4, 8)
r _{• Programmable /CAS latency (CL): 2, 3}
• Programmable driver strength: Half, Quarter
o • Byte control by UDQM and LDQM
• Address
⎯ 8K Row address /512 column address
• Refresh cycles
d _{• 8192 refresh cycles/64ms}
• 2 variations of refresh
⎯ Auto refresh
u ^{⎯ Self refresh}
• Wide temperature range
⎯ Ambient temperature range: −20°C to +85°C
• FBGA package with lead free solder (Sn-Ag-Cu)
ct ⎯ RoHS compliant
Pin Configurations
/xxx indicate active low signal.
54-ball FBGA
123456789
A
VSS DQ15 VSSQ
VDDQ DQ0 VDD
B
DQ14 DQ13 VDDQ
VSSQ DQ2 DQ1
C
DQ12 DQ11 VSSQ
VDDQ DQ4 DQ3
D
DQ10 DQ9 VDDQ
VSSQ DQ6 DQ5
E
DQ8 NC VSS
VDD LDQM DQ7
F
UDQM CLK CKE
/CAS /RAS /WE
G
A12 A11 A9
BA0 BA1 /CS
H
A8 A7 A6
A0 A1 A10
J
VSS A5 A4
A3 A2 VDD
(Top view)
A0 to A12
BA0, BA1
DQ0 to DQ15
/CS
/RAS
/CAS
/WE
LDQM /UDQM
CKE
CLK
VDD
VSS
VDDQ
VSSQ
NC
Address inputs
Bank select address
Data input/ output
Chip select
Row address strobe
Column address strobe
Write enable
Input/output mask
Clock enable
Clock input
Power for internal circuit
Ground for internal circuit
Power for DQ circuit
Ground for DQ circuit
No connection
Document No. E0800E10 (Ver. 1.0)
Date Published September 2005 (K) Japan
Printed in Japan
URL: http://www.elpida.com
This product became EOL in April, 2007.
©Elpida Memory, Inc. 2005