Internet Data Sheet
HY[B/I]25D256[16/40/80]0C[E/C/F/T](L)
256 Mbit Double-Data-Rate SDRAM
1
1.1
Overview
Features
•
•
•
•
•
•
•
•
•
•
•
Auto Precharge option for each burst access
Auto Refresh and Self Refresh Modes
RAS-lockout supported
t
RAP
=
t
RCD
7.8
µs
Maximum Average Periodic Refresh Interval
2.5 V (SSTL_2 compatible) I/O
V
DDQ
= 2.5 V
±
0.2 V (DDR200, DDR266, DDR333);
V
DDQ
= 2.6 V
±
0.1 V (DDR400)
V
DD
= 2.5 V
±
0.2 V (DDR200, DDR266, DDR333);
V
DD
= 2.6 V
±
0.1 V (DDR400)
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 mm
2
)
P-TSOPII-66 package
RoHS
1)
compliant product types available (green product)
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.
• 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
• 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
• CAS Latency: 1.5 (DDR200 only), 2, 2.5, 3
TABLE 1
Performance of –5, –6 and –7
Product Type Speed Code
Speed Grade
Max. Clock
Frequency
Component
@CL3
@CL2.5
@CL2
–5
DDR400B
–6
DDR333B
166
166
133
–7
DDR266A
—
143
133
Unit
—
MHz
MHz
MHz
f
CK3
f
CK2.5
f
CK2
200
166
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
03062006-8CCM-VPUW
3
QIMONDA [ QIMONDA AG ]
