K4T1G044QM-ZCD5

• JEDEC standard 1.8V ± 0.1V Power Supply
• VDDQ = 1.8V ± 0.1V
• 200 MHz fCK for 400Mb/sec/pin, 267MHz fCK for 533Mb/sec/pin.
• 8 Banks
• Posted CAS
• Programmable CAS Latency: 3, 4, 5
• Programmable Additive Latency: 0, 1 , 2 , 3 and 4
• Write Latency(WL) = Read Latency(RL) -1
• Burst Length: 4 , 8(Interleave/nibble sequential)
• Programmable Sequential / Interleave Burst Mode
• Bi-directional Differential Data-Strobe (Single-ended data-strobe is an optional feature)
• Off-Chip Driver(OCD) Impedance Adjustment
• On Die Termination
• Average Refresh Period 7.8us at lower than TCASE 85°C, 3.9us at 85°C < TCASE < 95 °C
• Package: 68ball FBGA - 256Mx4/128Mx8 , 92ball FBGA - 64Mx16
• All of Lead-free products are compliant for RoHS

Note :
1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.Exposure to absolute maximum rating conditions for extended periods may affect reliability.
2. Storage Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JESD51-2 standard.

The 1Gb DDR2 SDRAM K4T1G044QM-ZCD5 is organized as a 32Mbit x 4 I/Os x 8 banks, 16Mbit x 8 I/Os x 8banks or 8Mbit x 16 I/Os x 8 banks device. This synchronous device K4T1G044QM-ZCD5 achieves high speed double-data-rate transfer rates of up to 533Mb/sec/pin (DDR2-533) for general applications. 

The chip K4T1G044QM-ZCD5 is designed to comply with the following key DDR2 SDRAM features such as posted CAS with additive latency, write latency = read latency - 1, Off-Chip Driver(OCD) impedance adjustment and On Die Termination.

All of the control and address inputs are synchronized with a pair of externally supplied differential clocks. Inputs are latched at the crosspoint of differential clocks (CK rising and CK falling). All I/Os are synchronized with a pair of bidirectional strobes (DQS and DQS) in a source synchronous fashion. The address bus is used to convey row,column,and bank address information in a RAS/CAS multiplexing style. For example, 1Gb(x4) device receive 14/11/3 addressing.

The 1Gb DDR2 device K4T1G044QM-ZCD5 operates with a single 1.8V ± 0.1V power supply and 1.8V ± 0.1V VDDQ.

The 1Gb DDR2 device K4T1G044QM-ZCD5 is available in 68ball FBGAs(x4/x8)and in 92ball FBGAs(x16).