m69ar024b STMicroelectronics, m69ar024b Datasheet - Page 9

• Manufacturer Part Number: m69ar024b
• Description: 16 Mbit 1m X16 1.8v Supply, Asynchronous Psram
• Manufacturer: STMicroelectronics

Table 2. Operating Modes
Note: 1. X = V
Standby
(Deselect)
Output Disabled
Output Disabled
(No Read)
Upper Byte
Read
Lower Byte
Read
Word Read
No Write
Upper Byte
Write
Lower Byte
Write
Word Write
Power-down
Operation
2. Should not be kept in this logic condition longer than 1µs. Please contact your local ST sales office for the relaxation of 1µs limitation.
3. Power-down mode can be entered from the Standby state, and all DQ pins are in High-Z state.
4. Can be either V
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
IH
(3)
or V
IL
.
V
V
V
V
V
V
V
V
V
V
V
E2
IH
IH
IH
IH
IH
IH
IH
IH
IH
IH
IL
IL
or V
X
IH
V
V
V
V
V
V
V
V
V
V
E1
IH
(1)
IL
IL
IL
IL
IL
IL
IL
IL
IL
but must be valid before Read or Write.
X
X
V
V
V
V
V
V
V
V
V
W
IH
IH
IH
IH
IH
(1)
IL
IL
IL
IL
(1)
X
X
V
V
V
V
V
V
V
V
V
G
IH
IH
IH
IH
IH
(1)
(1)
IL
IL
IL
IL
X
X
X
V
V
V
V
LB
V
V
V
V
(1)
(1)
IH
IH
IH
IH
(1)
IL
IL
IL
IL
X
X
X
UB
V
V
V
V
V
V
V
V
IH
IH
IH
IH
(1)
(1)
IL
IL
IL
IL
(1)
A0-A19
Note
Valid
Valid
Valid
Valid
Valid
Valid
Valid
Valid
X
X
(1)
(1)
(4)
Input Valid
Input Valid
DQ0-DQ7
Output
Output
Invalid
Invalid
Valid
Valid
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
DQ8-DQ15
Input Valid
Input Valid
Output
Output
Invalid
Invalid
Valid
Valid
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
I
I
I
I
I
I
I
I
I
I
I
I
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
PD
SB
M69AR024B
Retention
Yes/No
Data
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
9/28