EDD2516AKTA-TI Datasheet, PDF (6/49 Pages) Elpida Memory – 256M bits DDR SDRAM WTR (Wide Temperature Range)

EDD2516AKTA-TI, EDD2516AKTA-LI
Pin Capacitance (TA = +25°C, VDD, VDDQ = 2.5V ± 0.2V)
Parameter
Symbol Pins
min.
typ.
max.
Unit
Notes
Input capacitance
CI1
CK, /CK
2.0
—
3.0
pF
1
CI2
All other input pins
2.0
—
3.0
pF
1
Delta input capacitance
Cdi1
CK, /CK
—
—
0.25
pF
1
Cdi2
All other input-only pins
—
—
0.5
pF
1
Data input/output capacitance CI/O
DQ, DM, DQS
4.0
—
5
pF
1, 2,
Delta input/output capacitance Cdio
DQ, DM, DQS
—
—
0.5
pF
1
Notes: 1. These parameters are measured on conditions: f = 100MHz, VOUT = VDDQ/2, ΔVOUT = 0.2V,
TA = +25°C.
2. DOUT circuits are disabled.
E_{AC Characteristics (TA = −40 to +85°C, VDD, VDDQ = 2.5V ± 0.2V, VSS, VSSQ = 0V)}
O_Parameter
Clock cycle time
(CL = 2)
L ^{(CL = 2.5)}
-6B
Symbol
min.
tCK
7.5
tCK
6
max.
12
12
Unit
Notes
ns
10
ns
CK high-level width
CK low-level width
CK half period
DQ output access time from
CK, /CK
DQS output access time from CK, /CK
DQS to DQ skew
DQ/DQS output hold time from DQS
Data hold skew factor
Data-out high-impedance time from CK,
/CK
Data-out low-impedance time from CK,
/CK
Read preamble
Read postamble
DQ and DM input setup time
DQ and DM input hold time
DQ and DM input pulse width
Write preamble setup time
Write preamble
Write postamble
Write command to first DQS latching
transition
DQS falling edge to CK setup time
DQS falling edge hold time from CK
tCH
0.45
0.55
tCL
0.45
0.55
tHP
min (tCH, tCL)
—
tAC
–0.7
0.7
tDQSCK
–0.6
0.6
P_tDQSQ
—
0.45
tQH
tHP – tQHS
—
tQHS
—
0.55
r_tHZ
–0.7
0.7
tLZ
–0.7
0.7
o _tRPRE
0.9
1.1
tRPST
0.4
0.6
tDS
0.45
—
d _tDH
0.45
—
tDIPW
1.75
—
tWPRES
0
—
u _tWPRE
0.25
—
tWPST
0.4
0.6
tDQSS
0.75
1.25
c _tDSS
0.2
—
t ^tDSH
0.2
—
tCK
tCK
tCK
ns
2, 11
ns
2, 11
ns
3
ns
ns
ns
5, 11
ns
6, 11
tCK
tCK
ns
8
ns
8
ns
7
ns
tCK
tCK
9
tCK
tCK
tCK
DQS input high pulse width
tDQSH
0.35
—
tCK
DQS input low pulse width
tDQSL
0.35
—
tCK
Address and control input setup time tIS
0.75
—
ns
8
Address and control input hold time
tIH
0.75
—
ns
8
Preliminary Data Sheet E0435E20 (Ver. 2.0)
6