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PDF A3S28D40FTP Data sheet ( Hoja de datos )
| Número de pieza | A3S28D40FTP | |
| Descripción | 128M Double Data Rate Synchronous DRAM | |
| Fabricantes | Zentel | |
| Logotipo |  |
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A3S28D30FTP
A3S28D40FTP
128M Double Data Rate Synchronous DRAM
128Mb DDR SDRAM Specification
A3S28D30FTP
A3S28D40FTP
Zentel Electronics Corp.
Revision 1.0
Apr., 2010
1 page  
A3S28D30FTP
A3S28D40FTP
128M Double Data Rate Synchronous DRAM
BLOCK DIAGRAM
A3S28D30FTP
DLL
DQ0 - 7
I/O Buffer
DQS
DQS Buffer
Memory
Array
Bank #0
Memory
Array
Bank #1
Memory
Array
Bank #2
Memory
Array
Bank #3
Mode Register
Control Circuitry
Address Buffer
A0-11 BA0,1
Clock Buffer
Control Signal Buffer
/CS /RAS /CAS /WE DM
CLK /CLK CKE
Type Designation Code
This rule is applied to only Synchronous DRAM family.
A 3 S 28 D 3 0 F TP –G4
Speed Grade
G: Green part
5: 200MHz @CL=3.0, 166MHz @CL=2.5, and 133MHz @CL=2.0
5E: 200MHz @CL=3.0/2.5, and 133MHz @CL=2.0
4: 250MHz @CL=3.0/4.0, 200MHz @CL2.5, and 133MHz @CL=2.0
Package Type TP: TSOP(II)
Process Generation
Function Reserved for Future Use
Organization 2 n 3: x8
DDR Synchronous DRAM
Density 28: 128M bits
Interface S:SSTL_2
Memory Style (DRAM)
Zentel DRAM
Revision 1.0
Page 4 / 39
Apr., 2010
5 Page 
A3S28D30FTP
A3S28D40FTP
128M Double Data Rate Synchronous DRAM
FUNCTION TRUTH TABLE (continued)
Current State
WRITE(Auto
Precharge
Disabled)
/CS /RAS /CAS /WE Address
H X X XX
L H H HX
L H H L BA
L H L H BA, CA, A10
Command
DESEL
NOP
TERM
READ / READA
L H L L BA, CA, A10 WRITE / WRITEA
L L H H BA, RA
ACT
L L H L BA, A10
PRE / PREA
L L L HX
REFA
LL
L L Op-Code, Mode- MRS
Add
H
READ with Auto
Precharge
L
L
X
H
H
X XX
H HX
H L BA
DESEL
NOP
TERM
L H L H BA, CA, A10 READ / READA
L H L L BA, CA, A10 WRITE / WRITEA
L L H H BA, RA
ACT
L L H L BA, A10
PRE / PREA
L L L HX
REFA
LL
L L Op-Code, Mode- MRS
Add
WRITE with
Auto Precharge
H
L
L
X
H
H
X XX
H HX
H L BA
DESEL
NOP
TERM
L H L H BA, CA, A10 READ / READA
L H L L BA, CA, A10 WRITE / WRITEA
L L H H BA, RA
ACT
L L H L BA, A10
PRE / PREA
L L L HX
REFA
LL
Op-Code, Mode-
L L Add
MRS
Action
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
Terminate Burst, Latch CA, Begin Read,
Determine Auto-Precharge
Terminate Burst, Latch CA, Begin Write,
Determine Auto-Precharge
Bank Active / ILLEGAL
Terminate Burst, Precharge
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
Support Concurrent Auto-Precharge
Support Concurrent Auto-Precharge
Bank Active / ILLEGAL
Precharge / ILLEGAL
ILLEGAL
ILLEGAL
NOP (Continue Burst to END)
NOP (Continue Burst to END)
ILLEGAL
Support Concurrent Auto-Precharge
Support Concurrent Auto-Precharge
Bank Active / ILLEGAL
Precharge / ILLEGAL
ILLEGAL
ILLEGAL
Notes
3
3
2
6
6
2, 6
2, 6
6
6
2, 6
2, 6
Revision 1.0
Page 10 / 39
Apr., 2010
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet A3S28D40FTP.PDF ] | |
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