Hwaling Technology Co., Ltd.



Product Name : 64Mb (1Mx4Banks×16bits) DDR SDRAM

Item No. : H2A264M1643B


The H2A264M1643B is CMOS Double Data Rate synchronous dynamic random access memory (DDR SDRAM); organized as 1Meg words x 4 banks by 16 bits.
The 64Mb DDR SDRAM uses double data rate architecture to accomplish high-speed operation. The data path internally prefetches multiple bits and it transfers the data for both rising and falling edges of the system clock. It means the doubled data bandwidth can be achieved at the I/O pins.
Available packages: TSOPII 66P 400mil.
H2A264M1643B_DDR1_4Mx16 (821 KB)
  • 2.5V ± 0.2V Power Supply for DDR400/ 333
  • Double Data Rate architecture; two data transfers per clock cycle
  • Differential clock inputs (CLK and /CLK )
  • DQS is edge-aligned with data for Read; center-aligned with data for Write
  • CAS Latency: 2, 2.5, 3 and 4
  • Burst Length: 2, 4 and 8
  • Auto Refresh and Self Refresh
  • Precharged Power Down and Active Power Down
  • Write Data Mask
  • Write Latency = 1
  • Maximum burst refresh cycle: 8
  • Interface: SSTL_2
  • Packaged in TSOP II 66-pin, using Lead free materials with RoHS compliant