HYB18T512160AC-37 INFINEON [Infineon Technologies AG], HYB18T512160AC-37 Datasheet - Page 33

• Manufacturer Part Number: HYB18T512160AC-37
• Description: 512-Mbit Double-Data-Rate-Two SDRAM
• Manufacturer: INFINEON [Infineon Technologies AG]

Figure 13
Note:
1. Synchronous ODT timings apply for Active Mode
2. ODT turn-on time (
Figure 14
Note: Asynchronous ODT timings apply for Precharge Power-Down Mode and “Slow Exit” Active Power Down
Data Sheet
and Standby Mode with CKE “high” and for the
“Fast Exit” Active Power Down Mode (MRS bit A12
set to “0”). In all these modes the on-die DLL is
enabled.
leaves high impedance and ODT resistance begins
CKE
ODT
CK, CK
CKE
CK, CK
DQ
DQ
ODT
Mode (MRS bit A12 set to “1”), where the on-die DLL is disabled in this mode of operation.
see note 1
T
0
T
0
"low"
ODT Timing for Active and Standby (Idle) Modes
ODT Timing for Precharge Power-Down and Active Power-Down Mode (with slow exit)
(Asynchronous ODT timings)
t
IS
t
IS
T
1
T
1
t
AON,min
tAONPD,min
tAONPD,max
tAOND (2 tck)
) is when the device
T
2
T
2
tAON(min)
t
IS
t
IS
T
3
T
3
tAON(max)
tAOFPD,max
tAOFPD,min
tAOFD (2.5 tCK)
T
4
T
4
33
Rtt
Rtt
3. ODT turn off time min. (
tAOF(min)
512-Mbit Double-Data-Rate-Two SDRAM
to turn on. ODT turn on time max. (
the ODT resistance is fully on. Both are measured
from t
starts to turn off the ODT resistance.ODT turn off
time max. (
impedance. Both are measured from
HYB18T512[400/800/160]A[C/F]–[3.7/5]
T
5
T
5
A
OND
.
t
AOF max
tAOF(max)
T
6
T
6
) is when the bus is in high
t
AOF min
T
7
T
7
Functional Description
09112003-SDM9-IQ3P
) is when the device
Rev. 1.13, 2004-05
t
AON max
T
8
T
8
t
AOFD
ODT02
ODT01
) is when
.