Internet Data Sheet
HY[B/I]25D256[16/40/80]0C[E/C/F/T](L)
256 Mbit Double-Data-Rate SDRAM
1
Overview
This chapter lists all main features of the product family HY[B/I]25D256[16/40/80]0C[E/C/F/T](L) and the ordering information.
1.1
Features
•
Double data rate architecture: two data transfers per clock
cycle
Bidirectional data strobe (DQS) is transmitted and
received with data, to be used in capturing data at the
receiver
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•
•
•
•
Auto Precharge option for each burst access
Auto Refresh and Self Refresh Modes
RAS-lockout supported tRAP = tRCD
7.8 µs Maximum Average Periodic Refresh Interval
2.5 V (SSTL_2 compatible) I/O
•
•
DQS is edge-aligned with data for reads and is center-
aligned with data for writes
Differential clock inputs (CK and CK)
Four internal banks for concurrent operation
Data mask (DM) for write data
DLL aligns DQ and DQS transitions with CK transitions
Commands entered on each positive CK edge; data and
data mask referenced to both edges of DQS
Burst Lengths: 2, 4, or 8
• VDDQ = 2.5 V ± 0.2 V (DDR200, DDR266, DDR333);
DDQ = 2.6 V ± 0.1 V (DDR400)
• VDD = 2.5 V ± 0.2 V (DDR200, DDR266, DDR333);
DD = 2.6 V ± 0.1 V (DDR400)
V
•
•
•
•
•
V
•
Standard Temperature Range (0 °C - +70 °C) or Industrial
Temperature Range (–40 °C - +85 °C)
P-TFBGA-60-12 package with 3 depopulated rows
(8 × 12 mm2)
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P-TSOPII-66 package
CAS Latency: 1.5 (DDR200 only), 2, 2.5, 3
RoHS1) compliant product types available (green product)
TABLE 1
Performance of –5, –6 and –7
Product Type Speed Code
–5
–6
–7
Unit
Speed Grade Component
DDR400B
200
DDR333B
166
DDR266A
—
—
Max. Clock
Frequency
@CL3
@CL2.5
@CL2
fCK3
MHz
MHz
MHz
fCK2.5
fCK2
166
166
143
133
133
133
1) RoHS Compliant Product: Restriction of the use of certain hazardous substances (RoHS) in electrical and electronic equipment as defined
in the directive 2002/95/EC issued by the European Parliament and of the Council of 27 January 2003. These substances include mercury,
lead, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated biphenyl ethers.
Rev. 2.3, 2007-03
3
03062006-8CCM-VPUW