HYB18TC256160AF Datasheet, PDF (5/54 Pages) Qimonda AG – 256-Mbit Double-Data-Rate-Two SDRAM DDR2 SDRAM

Internet Data Sheet
HYB18TC256160AF
256-Mbit Double-Data-Rate-Two SDRAM
1.2
Description
The 256-Mbit DDR2 DRAM is a high-speed Double-Data-
Rate-Two CMOS Synchronous DRAM device. The DRAM
contains 268,435,456 bits and internally configured as a
quad-bank DRAM. The 256-Mbit device is organized as either
16 Mbit ×4 I/O ×4 banks, 8 Mbit ×8 I/O ×4 banks or 4 Mbit ×16
I/O ×4 banks chip. These synchronous devices achieve high
speed transfer rates starting at 400 Mb/sec/pin for general
applications. See tables for performance figures.
The device is designed to comply with all DDR2 DRAM key
features:
1. Posted CAS with additive latency,
2. Write latency = read latency - 1,
3. Normal and weak strength data-output driver,
4. Off-Chip Driver (OCD) impedance adjustment
5. On-Die Termination (ODT) function.
All of the control and address inputs are synchronized with a
pair of externally supplied differential clocks. Inputs are
latched at the cross point of differential clocks (CK rising and
CK falling). All I/Os are synchronized with a single ended
DQS or differential DQS-DQS pair in a source synchronous
fashion.
A 15 bit address bus is used to convey row, column and bank
address information in a RAS-CAS multiplexing style.
The DDR2 device operates with a 1.8 V ± 0.1 V power
supply. An Auto-Refresh and Self-Refresh mode is provided
along with various power-saving power-down modes.
The functionality described and the timing specifications
included in this data sheet are for the DLL Enabled mode of
operation.
The DDR2 SDRAM is available in PG-TFBGA-84 package.
TABLE 4
Ordering Information for RoHS Compliant Products
Part Number
Org. Speed
CAS¹⁾RCD²⁾RP³⁾ Latencies Clock(MHz) Package
Note
HYB18TC256160AF–3S ×16 DDR2–667 5–5–5
HYB18TC256160AF–3.7 ×16 DDR2–533 4–4–4
333
PG-TFBGA-84 ⁴⁾
266
PG-TFBGA-84
HYB18TC256160AF–5 ×16 DDR2–400 3–3–3
200
PG-TFBGA-84
1) CAS: Column Adress Strobe
2) RCD: Row Column Delay
3) RP: Row Precharge
4) 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.
Note: For product nomenclature see Chapter 9 of this data sheet
Rev. 1.1, 2007-02
5
03062006-H3V1-XJT4