m69aw048b STMicroelectronics, m69aw048b Datasheet - Page 9
m69aw048b
Manufacturer Part Number
m69aw048b
Description
32 Mbit 2m X16 3v Asynchronous Psram
Manufacturer
STMicroelectronics
Datasheet
1.M69AW048B.pdf
(29 pages)
set to ‘0000h’, and the data of the fifth cycle is the
Power-Down Configuration data (see
5., Power-Down Configuration
cycle is written into a different address, the se-
quence is aborted. In the last cycle, a read is made
from the specific Power-Down Configuration ad-
dress (see
Addresses). The Power-Down Configuration data
Table 2. Operating Modes
Note: X = V
Table 3. Power-Down Modes
Standby (Deselected)
Power-Down
No Read
Lower Byte Read
Lower Byte Write
No Write
Upper Byte Read
Upper Byte Write
Word Read
Word Write
Deep Power-Down (Default)
4Mb PAR
8Mb PAR
16Mb PAR
1. Should not be kept in this logic condition for a period longer than 1µs.
2. Power-Down mode can be entered from Standby state and all DQ pins are in High-Z state. The Power-Down current and data re-
3. G can be V
Operation
tention depend on the selection of Power-Down programming.
a. Write pulse is initiated by E1 (E1 Controlled Write timing), or cycle time of the previous operation cycle is satisfied;
b. G stays V
(1)
IH
or V
(1)
(1)
Table 6., Power-Down Configuration
(2)
IL
.
Mode
IL
(1)
(1)
(1)
(1)
IL
during the Write operation if the following conditions are satisfied:
during the entire Write cycle.
V
V
V
V
V
V
V
V
V
E1
X
IH
IL
IL
IL
IL
IL
IL
IL
IL
V
V
V
V
V
V
V
V
V
E2
V
Data). If the fourth
IH
IH
IH
IH
IH
IH
IH
IH
IH
IL
V
V
V
V
V
V
V
V
W
X
X
IH
IH
IH
IH
IL
IL
IL
IL
V
V
V
V
V
V
V
V
IH
G
X
X
IH
IH
IH
Table
IL
IL
IL
IL
(3)
Data Retention
16 Mbit
V
V
V
V
LB
V
V
V
V
4 Mbit
8 Mbit
X
X
IH
IH
IH
IH
IL
IL
IL
IL
No
and address must correspond, otherwise the se-
quence is aborted.
When this sequence is performed to take the de-
vice from one PAR mode to another, the write data
may be lost. So, if a PAR mode is used, this se-
quence should be performed prior to any normal
read or write operations.
UB
V
V
V
V
V
V
V
V
X
X
IH
IH
IH
IH
IL
IL
IL
IL
Data Output
Data Output
Data Input
Data Input
DQ0-DQ7
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Data Output
Data Output
DQ8-DQ15
Data Input
Data Input
Retention Address
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
00000h – 3FFFFh
00000h – 7FFFFh
00000h – FFFFFh
N/A
M69AW048B
Output Disable
Output Disable
I
Standby (I
(I
Power-Down
CCP8,
Active (I
Active (I
Active (I
Active (I
Active (I
Active (I
CCPD,
Power
I
CCP16
I
CCP4,
CC
CC
CC
CC
CC
CC
SB
)
)
)
)
)
)
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)
)