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PDF A2S56D40CTP Data sheet ( Hoja de datos )
| Número de pieza | A2S56D40CTP | |
| Descripción | (A2S56D20CTP - A2S56D40CTP) 256Mb DDR SDRAM | |
| Fabricantes | Powerchip Semiconductor | |
| Logotipo |  |
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256Mb DDR SDRAM Specification
A2S56D20CTP
A2S56D30CTP
A2S56D40CTP
Powerchip Semiconductor Corp.
No.12, Li-Hsin Rd.1, Science-based Industrial Park, Hsin-Chu
Taiwan, R.O.C.
TEL: 886-3-5795000
FAX: 886-3-5792168
1 page  
Powerchip Semiconductor Corp.
BLOCK DIAGRAM
DLL
256Mb DDR Synchronous DRAMwww.DataSheet4U.com
A2S56D20CTP (4-bank x 16,777,216 - word x 4-bit)
A2S56D30CTP (4-bank x 8,388,608 - word x 8-bit)
A2S56D40CTP (4-bank x 4,194,304 - word x 16-bit)
DQ0-7
I/O Buffer
DQS
QS Buffer
Memory
Array
Bank#0
Memory
Array
Bank#1
Memory
Array
Bank#2
Memory
Array
Bank#3
Mode Register
Control Circuitry
Address Buffer
A0-12 BA0,1
Clock Buffer
CLK, /CLK CKE
Control Signal Buffer
/CS /RAS /CAS /WE DM
Type Designation Code
A 2 S 56 D 3 0 C TP - G 5 L
Special Function
Access Item
L : Low Power , Blank : Standard
-5 : 200MHz@CL=2.5;3 and 133MHz @CL=2
-6 : 166MHz@CL=2.5 and 133MHz @CL=2
-75 : 133MHz@CL=2.5 and 100MHz @CL=2
Package Type
TP : TSOP(II) ; G : Pb - Free
Process Generation
Function
C : 4th generation
0 : Random Column
Organization
2 : x4, 3 : x8, 4: x16
DDR Synchronous DRAM
Density
56 : 256Mbit
Interface
V : LVTTL ; S : SSTL_3,_2
Memory Style (DRAM)
PSC DRAM
Jun.2004
Page- 3
Rev.1.0
5 Page 
Powerchip Semiconductor Corp.
256Mb DDR Synchronous DRAMwww.DataSheet4U.com
A2S56D20CTP (4-bank x 16,777,216 - word x 4-bit)
A2S56D30CTP (4-bank x 8,388,608 - word x 8-bit)
A2S56D40CTP (4-bank x 4,194,304 - word x 16-bit)
FUNCTION TRUTH TABLE (continued)
Current State /CS /RAS /CAS /WE Address
PRE -
H X X XX
CHARGING L H H H X
L H H L BA
L H L X BA, CA, A10
L L H H BA, RA
L L H L BA, A10
L L L HX
Op-Code,
LLLL
Mode-Add
ROW
H X X XX
ACTIVATING L H H H X
L H H L BA
L H L X BA, CA, A10
L L H H BA, RA
L L H L BA, A10
L L L HX
Op-Code,
LLLL
Mode-Add
WRITE RE- H X X X X
COVERING L H H H X
L H H L BA
L H L X BA, CA, A10
L L H H BA, RA
L L H L BA, A10
L L L HX
Op-Code,
LLLL
Mode-Add
Command
Action
DESEL NOP (Idle after tRP)
NOP NOP (Idle after tRP)
TERM ILLEGAL
READ / WRITE ILLEGAL
ACT ILLEGAL
PRE / PREA NOP (Idle after tRP)
REFA ILLEGAL
Notes
2
2
2
4
MRS
ILLEGAL
DESEL NOP (Row Active after tRCD)
NOP NOP (Row Active after tRCD)
TERM ILLEGAL
READ / WRITE ILLEGAL
ACT ILLEGAL
PRE / PREA ILLEGAL
REFA ILLEGAL
2
2
2
2
MRS
ILLEGAL
DESEL NOP
NOP NOP
TERM ILLEGAL
READ / WRITE ILLEGAL
ACT ILLEGAL
PRE / PREA ILLEGAL
REFA ILLEGAL
2
2
2
2
MRS
ILLEGAL
Jun.2004
Page- 9
Rev.1.0
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet A2S56D40CTP.PDF ] | |
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