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Número de pieza | A3S28D40JTP | |
Descripción | 128M Double Data Rate Synchronous DRAM | |
Fabricantes | Zentel | |
Logotipo | ||
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No Preview Available ! A3S28D40JTP
128M Double Data Rate Synchronous DRAM
128Mb DDR SDRAM Specification
A3S28D40JTP
Zentel Electronics Corp.
Revision 1.0
Oct., 2013
1 page BLOCK DIAGRAM
A3S28D40JTP
DLL
A3S28D40JTP
128M Double Data Rate Synchronous DRAM
DQ0 - 15
UDQS, LDQS
I/O Buffer
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
Type Designation Code
A 3 S 28 D 4 0J TP - 50
Clock Buffer
Control Signal Buffer
/CS /RAS /CAS /WE UDM,
CLK /CLK CKE
LDM
This rule is applied to only Synchronous DRAM family.
Speed
50: 200MHz@CL=3, 166MHz@CL=2.5, and 133MHz@CL=2
Package Type TP: TSOP II
Die Version
0J: Version 0J
I/O Configuration 4: x16
Classification D: DDR Synchronous DRAM
Density
28: 128Mb
Interface
S: SSTL_2
Product Line 3: DRAM
Zentel Memory
Revision 1.0
Page 4/ 39
Oct., 2013
5 Page A3S28D40JTP
128M Double Data Rate Synchronous DRAM
FUNCTION TRUTH TABLE (continued)
Current State /CS /RAS /CAS /WE Address
Command
PRE-
H X X XX
DESEL
CHARGING L H H H X
NOP
L H H L BA
TERM
L H L X BA, CA, A10 READ / WRITE
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
ROW
ACTIVATING
H
L
L
X
H
H
X XX
H HX
H L BA
DESEL
NOP
TERM
L H L X BA, CA, A10 READ / WRITE
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 RE-
COVERING
H
L
L
X
H
H
X XX
H HX
H L BA
DESEL
NOP
TERM
L H L X BA, CA, A10 READ / WRITE
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 (Idle after tRP)
NOP (Idle after tRP)
ILLEGAL
ILLEGAL
ILLEGAL
NOP (Idle after tRP)
ILLEGAL
ILLEGAL
NOP (Row Active after tRCD)
NOP (Row Active after tRCD)
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
NOP
NOP
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Notes
2
2
2
4
2
2
2
2
2
2
2
2
Revision 1.0
Page 10/ 39
Oct., 2013
11 Page |
Páginas | Total 30 Páginas | |
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