Internet Data Sheet
HYI25DC256[16/80]0CE
256 Mbit Double-Data-Rate SDRAM
1
Overview
This chapter lists all main features of the product family HYI25DC256[16/80]0CE and the ordering information.
1.1
Features
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Double data rate architecture: two data transfers per clock cycle
Industrial operating temperature range: -40°C to +85°C
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: 2, 2.5, 3
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
V
V
DDQ = 2.6 V ± 0.1 V
DD = 2.6 V ± 0.1 V
PG-TSOPII-66 package
Lead- and halogene-free = green product
TABLE 1
Performance
Part Number Speed Code
–5
–6
Unit
Speed Grade
Component
DDR400B
200
DDR333B
166
—
Max. Clock Frequency
@CL3
@CL2.5
@CL2
fCK3
MHz
MHz
MHz
fCK2.5
fCK2
166
166
133
133
Rev. 1.00, 2006-09
3
03292006-O26P-394X
QIMONDA [ QIMONDA AG ]
