GMM27333230ANTG
AC Characteristics (Ta = 0 to 70C, VCC, VCCQ = 3.3 V +/- 0.3 V, VSS, VSSQ = 0 V)
(Continued)
- 8
- 7K
- 7J
- 10K
Parameter
Symbol
Unit Notes
Min Max Min Max Min Max Min Max
Write recovery or data-in
to precharge lead time
Active (a) to Active (b)
command period
8
-
-
10
20
-
-
10
20
-
-
15
20
-
-
ns
ns
1
1
t
RWL
16
t
RRD
Refresh period
-
64
-
-
64
-
-
64
-
-
64
-
ms
us
t
REF
PLL Stabilization time
200
200
200
200
6
t
STAB
Notes :
1. AC measurement assumes tT = 1ns. Reference level for timing of input signals is 1.40V.
If tT is longer than 1ns,transition time compensation should be considered.
2. Access time is measured at 1.40V. Load condition is CL = 50pF without termination.
3. tLZ (min)defines the time at which the outputs achieves the low impedance state.
4. tHZ (max)defines the time at which the outputs achieves the high impedance state.
5. tCES define CKE setup time to CKE rising edge except Power down exit command.
6. The on-DIMM PLL must be given enough clock cycles to stabilize (tSTAB) before any
operation can be guaranteed.
Test Condition
Input and output-timing reference levels: 1.4V
Input waveform and output load: See following figures
I/O
2.4V
OPEN
80%
20%
input
0.4V
CL
t
T
t
T
Rev. 1.1/Dec.99
9
HYNIX [ HYNIX SEMICONDUCTOR ]
