m69ar048b STMicroelectronics, m69ar048b Datasheet - Page 14

• Manufacturer Part Number: m69ar048b
• Description: 32 Mbit 2mb X16 1.8v Asynchronous Psram
• Manufacturer: STMicroelectronics

M69AR048B
Table 11. Read Mode AC Characteristics
Note: 1. Maximum value is applicable if E1 is kept Low without change of address input of A3 to A20. If needed by system operation, please
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t
t
AVEH2
AVAX2
t
t
t
t
AVAX
AVQV2
t
t
t
AXAV2
AVQV
t
Symbol
AXAV
t
t
ELAX
ELEH
t
t
t
t
EHAX
GLQX
BLQX
ELQX
GLQV
BLQV
ELQV
t
t
t
t
t
t
t
t
t
GHQX
GHQZ
AXQX
BHQX
BHQZ
EHQX
EHQZ
EHEL
2. Address should not be changed within minimum Read Cycle Time.
3. The output load 5pF without any other load.
4. Applicable to A3 to A20 when E1 is kept Low.
5. Applicable only to A0, A1 and A2 when E1 is kept Low for the page address access.
6. In case Page Read Cycle is continued with keeping E1 stays Low, E1 must be brought to High within 4µs. In other words, Page
7. Applicable when at least two of address inputs among applicable are switched from previous state.
8. Minimum Read Cycle TIme and minimum Page Read Cycle Time must be satisfied.
9. Values obtained with AC Measurement Load Circuit 1 (see Figure 5). If the test conditions correspond to AC Measurement Load
AVEL
(1,5,6,9)
(1,5,6,9)
(1,2,9)
contact your local ST representative for relaxation of the 1000ns limitation.
Read Cycle must be closed within 4µs.
Circuit 2 (see Figure 6), 10ns must be added to the times given in the above table.
(4,7)
(1,2)
(1,2)
(4,9)
(5,7)
(9)
(9)
(5,9)
(9)
(3)
(3)
(8)
(3)
t
t
t
t
CHAH
t
t
t
t
t
t
t
t
Alt.
t
t
t
t
t
PRC
PRC
ASC
t
t
AXP
BHZ
t
t
CHZ
t
t
t
OHZ
t
PAA
CLZ
OLZ
BLZ
RC
OH
OH
CP
OH
RC
RC
CE
OH
OE
AA
AX
BA
Address Valid Time
Page Read Cycle Time
Page Read Cycle Time
Address Valid to Chip Enable Low
Address Valid to Output Valid
Page Address Access Time
Address Invalid Time
Page Address Invalid Time
Data hold from address change
Upper/Lower Byte Enable High to Output Transition
Upper/Lower Byte Enable High to Output Hi-Z
Upper/Lower Byte Enable Low to Output Valid
Upper/Lower Byte Enable Low to Output Transition
Chip Enable High to Address Invalid
Chip Enable High to Chip Enable Low
Chip Enable High to Output Transition
Chip Enable High to Output Hi-Z
Read Cycle Time
Read Cycle Time
Chip Enable Low to Output
Valid
Chip Enable Low to Output Transition
Output Data Hold Time
Output Enable High to Output Hi-Z
Output Enable Low to Output Valid
Output Enable Low to Output Transition
Parameter
1.65V V
1.75V V
1.65V V
1.75V V
CC
CC
CC
CC
1.75V
1.95V
1.75V
1.95V
Min
80
–5
15
25
25
–5
80
80
5
5
0
5
5
5
0
80
1000
1000
1000
1000
1000
M69AR048B
Max
80
70
20
30
20
80
70
20
45
20
10
10
Min
85
30
30
–5
–5
15
85
85
5
5
0
5
5
5
0
85
1000
1000
1000
1000
1000
Max
85
70
25
10
10
20
35
20
85
70
20
50
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns