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PDF A3R1GE40JBF Data sheet ( Hoja de datos )
| Número de pieza | A3R1GE40JBF | |
| Descripción | 1Gb DDRII Synchronous DRAM | |
| Fabricantes | Zentel | |
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A3R1GE30JBF
A3R1GE40JBF
1Gb DDRII Synchronous DRAM
1Gb DDRII SDRAM Specification
A3R1GE30JBF
A3R1GE40JBF
Zentel Electronics Corp.
Revision 1.0
Dec., 2014
1 page  
CONTENTS
A3R1GE30JBF
A3R1GE40JBF
1Gb DDRII Synchronous DRAM
Specifications ................................................................................................................................ 1
Features ........................................................................................................................................ 1
Ordering Information ..................................................................................................................... 2
Part Number.................................................................................................................................. 2
Pin Configurations......................................................................................................................... 3
Electrical Specifications................................................................................................................. 5
Block Diagram............................................................................................................................... 24
Pin Function .................................................................................................................................. 25
Command Operation..................................................................................................................... 27
Simplified State Diagram............................................................................................................... 35
Operation of DDR2 SDRAM.......................................................................................................... 36
Package Drawing .......................................................................................................................... 70
Recommended Soldering Conditions ........................................................................................... 72
Revision 1.0
Page 4 / 72
Dec., 2014
5 Page 
A3R1GE30JBF
A3R1GE40JBF
1Gb DDRII Synchronous DRAM
DC Characteristics 2
Parameter
Symbol Value
Unit Notes
Input leakage current
|ILI| 2
μA VSS ≤ VIN ≤ VDD
Output leakage current
|ILO|
5
μA VSSQ ≤ VOUT ≤ VDDQ
Output timing measurement reference level VOTR 0.5 x VDDQ V 1
Output minimum sink DC current
IOL +13.4
mA 3, 4, 5
Output minimum source DC current
IOH -13.4
mA 2, 4, 5
Notes: 1. The VDDQ of the device under test is referenced.
2.VDDQ = 1.7V; VOUT = 1.42V.
3.VDDQ = 1.7V; VOUT = 0.28V.
4.The DC value of VREF applied to the receiving device is expected to be set to VTT.
DC Characteristics 3
Parameter
AC differential input voltage
AC differential cross point voltage
AC differential cross point voltage
Symbol
VID (AC)
VIX (AC)
VOX (AC)
min
0.5
0.5 x VDDQ - 0.175
0.5 x VDDQ - 0.125
max
VDDQ + 0.6
0.5xVDDQ + 0.175
0.5xVDDQ + 0.125
Unit
V
V
V
Notes:1. VID (AC) specifies the input differential voltage |VTR - VCP| required for switching, where
VTR is the true input signal (such as CK, DQS) and VCP is the complementary input signal
(such as/CK,/DQS). The minimum value is equal to VIH (AC) - VIL (AC).
2.The typical value of VIX (AC) is expected to be about 0.5 x VDDQ of the transmitting device
and VIX (AC) is expected to track variations in VDDQ. VIX (AC) indicates the voltage at which
differential input signals must cross.
3.The typical value of VOX (AC) is expected to be about 0.5 x VDDQ of the transmitting device
and VOX (AC) is expected to track variations in VDDQ. VOX (AC) indicates the voltage at
which differential output signals must cross.
Notes
1,2
2
3
Revision 1.0
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Dec., 2014
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