lrs1808a ETC-unknow, lrs1808a Datasheet - Page 29

• Manufacturer Part Number: lrs1808a
• Description: 32m X16 Flash + 16m X16 Scram
• Manufacturer: ETC-unknow

13. AC Electrical Characteristic for Smartcombo RAM
13.1 AC Test Conditions
Note:
13.2 Read Cycle
Notes:
It is possible to control data width by S-LB and S-UB pins.
Input pulse level
Input rise and fall time
Input and Output timing Ref. level
Output load
Symbol
1. Including scope and socket capacitance.
1. Reading data from lower byte
2. Reading data from upper byte
3. Reading data from both bytes
t
t
t
t
t
t
t
t
t
t
t
t
t
ACE
t
t
AHC
CHZ
BHZ
OHZ
ASC
C1H
CLZ
BLZ
OLZ
AA
OH
RC
OE
BE
Data can be read when the address is set while holding S-CE
S-LB = Low.
Data can be read when the address is set while holding S-CE
S-UB = Low.
Data can be read when the address is set while holding S-CE
S-LB = Low and S-UB = Low.
Read Cycle Time
Address Access Time
Chip Enable Access Time
Output Enable to Output Valid
Byte Enable Access Time
Address Setup to S-CE
Address Hold to S-CE
S-CE
S-CE
S-CE
S-UB or S-LB Low to Output Active
S-UB or S-LB High to Output in High-Z
S-OE Low to Output Active
S-OE High to Output in High-Z
Output Hold from Address Change
1
1
1
(1,2,3)
High Pulse Width
Low to Output Active
High to Output in High-Z
1
1
High
Low
Parameter
L R S 1 8 0 8 A
0.3 V to V
1TTL +C
1
1
1
= Low, S-CE
= Low, S-CE
= Low, S-CE
1/2 V
3 ns
L
CC
(50pF)
CC
- 0.3 V
2
2
2
(T
(1)
= High, S-OE = Low, S-WE = High and
= High, S-OE = Low, S-WE = High and
= High, S-OE = Low, S-WE = High,
A
= -30°C to +85°C, S-V
Notes
Min.
85
30
0
0
0
0
0
5
32,000
CC
Max.
85
85
40
40
30
30
30
= 2.7V to 3.1V)
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
27