HYB18M256320CF Datasheet, PDF (3/26 Pages) Qimonda AG – DRAMs for Mobile Applications

1
Overview
Internet Data Sheet
HY[B/E]18M256[16/32]0CF
256-Mbit DDR Mobile-RAM
1.1
Features
• Organization:
– 4 banks × 4 Mbit × 16, 1 KB page size
– 4 banks × 2 Mbit × 32, 2 KB page size
• Double-data-rate architecture: two data transfers per clock cycle
• Bidirectional data strobe (DQS) is transmitted / received with data; to be used in capturing data at the receiver
• DQS is edge-aligned with data for READs and center-aligned with data for WRITEs
• Differential clock input (CK / CK)
• Commands entered on positive CK edge; data and mask data are referenced to both edges of DQS
• Four internal banks for concurrent operation
• Programmable CAS latency: 2 and 3
• Programmable burst length: 2, 4, 8, 16 and full page
• Programmable drive strength: full, 1/2, 1/4 and 1/8
• Auto refresh and self refresh modes
• Refresh cycles:
– 8192 refresh cycles / 64ms (x16)
– 4096 refresh cycles / 64ms (x32)
• Auto precharge
• Commercial (-0°C to +70°C) and Extended (-25°C to +85°C) operating temperature ranges
• Package:
– x16: 60–ball PG-VFBGA-60-4 10.0 × 10.5 × 1.0 mm
– x32: 90–ball PG-VFBGA-60-3 10.0 × 12.5 × 1.0 mm
• RoHS Compliant Products¹⁾
Power Saving Features
• Low supply voltages: V_DD = 1.70 V − 1.95 V, V_DDQ = 1.70 V − 1.95 V
• Optimized operating (I_DD0, I_DD4), self refresh (I_DD6) and standby currents (I_DD2, I_DD3)
• DDR I/O scheme with no DLL
• Programmable Partial Array Self Refresh (PASR)
• Temperature Compensated Self-Refresh (TCSR), controlled by on-chip temperature sensor
• Clock Stop, Power-Down and Deep Power-Down modes
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.1.44, 2007-07
3
06262007-JK8G-48BV