HYB18T512160AC-37 INFINEON [Infineon Technologies AG], HYB18T512160AC-37 Datasheet - Page 56

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

2.8.3
The following table summarizes the minimum
command delays between Read, Read w/AP, Write,
Table 14
From Command
READ
READ w/AP
WRITE
WRITE w/AP
PRECHARGE
PRECHARGE-ALL PRECHARGE
1)
2)
3)
Data Sheet
RU{
For a given bank, the precharge period should be counted from the latest precharge command, either one bank precharge or precharge-
all, issued to that bank. The precharge period is satisfied after
RU{
t
t
RTP
WR
(ns) /
(ns) /
Read or Write to Precharge Command Spacing Summary
Minimum Command Delays
t
t
CK
CK
(ns)} must be used, where RU stands for “Round Up”
(ns)} must be used, where RU stands for “Round Up”
To Command
PRECHARGE (to same banks as
READ)
PRECHARGE-ALL
PRECHARGE (to same banks as
READ w/AP)
PRECHARGE-ALL
PRECHARGE (to same banks as
WRITE)
PRECHARGE-ALL
PRECHARGE (to same banks as
WRITE w/AP)
PRECHARGE-ALL
PRECHARGE (to same banks as
PRECHARGE)
PRECHARGE-ALL
PRECHARGE-ALL
t
RP
56
or
t
RP, all
Write w/AP to the Precharge commands to the same
banks and Precharge-All commands.
512-Mbit Double-Data-Rate-Two SDRAM
Minimum Delay between “From
Command” to “To Command”
AL + BL/2 + max(
AL + BL/2 + max(
AL + BL/2 + max(
AL + BL/2 + max(
WL + BL/2 +
WL + BL/2 +
WL + BL/2 + WR
WL + BL/2 + WR
1
1
1
1
depending on the latest precharge command issued to that bank
HYB18T512[400/800/160]A[C/F]–[3.7/5]
t
t
WR
WR
t
t
t
t
RTP
RTP
RTP
RTP
, 2) - 2
, 2) - 2
, 2) - 2
, 2) - 2
Functional Description
09112003-SDM9-IQ3P
Rev. 1.13, 2004-05
Units Notes
t
t
t
t
t
t
t
t
t
t
t
t
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
1)2)
1)2)
1)2)
1)2)
2)3)
2)3)
2)
2)
2)
2)
2)
2)