128M Double Data Rate Synchronous DRAM
Description
A3S28D30FTP A3S28D40FTP
128M Double Data Rate Synchronous DRAM
128Mb DDR SDRAM Specification
A3S28D30FTP A3S28D40FTP
Zentel Electronics Corp.
Revision 1.
0
Apr.
, 2010
A3S28D30FTP A3S28D40FTP
128M Double Data Rate Synchronous DRAM
DESCRIPTION
A3S28D30FTP is a 4-bank x 4,194,304-word x 8bit, A3S28D40FTP is a 4-bank x 2,097,152-word x 16bit double data rate synchronous DRAM , with SSTL_2 interface.
All control and address signals are referenced to the rising edge of CLK.
Input data is registered on both edges of data strobe ,and output data and data strobe are referenced on both edges of CLK.
The A3S28D30/40FTP achieves very high speed clock rate up to 250 MHz .
FEATURES
- Vdd=VddQ=2.
5V+0.
2V (-4, -5E, -5) - Double data rate architecture ; two data transfers per clock cycle.
- Bidirectional , data strobe (DQS) is transmitted/received with data - Differential clock input (CLK and /CLK) - DLL aligns DQ and DQS transitions with CLK transitions edges of DQS - Commands entered on each positive CLK edge ; - Data and data mask referenced to both edges of DQS - 4 bank operation controlled by BA0 , BA1 (Bank Address) - /CAS latency - 2.
0 / 2.
5 / 3.
0 / 4.
0 (programmable) ;
Burst length - 2 / 4 / 8 (programmable) Burst type - Sequential / Interleave (programmable) - Auto Precharge / All Bank Precharge controlled by A10 - Support concurrent Auto Precharge - 4096 refresh cycles / 64ms (4 banks concurrent refresh) - Auto Refresh and Self Refresh - Row address A0-11 / Column address A0-9(x8) /A0-8(x16) - SSTL_2 Interface - Package 400-mil, 66-pin Thin Small Outline Package (TSOP II) with 0.
65mm lead pitch
Zentel Electronics Corporation reserve the right to change products or specification without notice.
Revision 1.
0
Page 1 / 39
Apr.
, 2010
A3S28D30FTP A3S28D40FTP
128M Double Data Rate Synchronous DRAM
Pin Assignment (Top View) 66-pin TSOP
x8 x16
Vdd
DQ0 VddQ
NC
DQ1 VssQ
NC
DQ2 VddQ
NC
DQ3 VssQ
NC
NC VddQ
NC NC Vdd NC
NC /WE /CAS /RAS /CS NC BA0
BA1 A10/AP
A0
A1 A2 A3
Vdd
Vd...
Similar Datasheet
