AT52BR3228A Datasheet, PDF (39/46 Pages) ATMEL Corporation – 32-megabit Flash + 4-megabit/ 8-megabit SRAM Stack Memory

AT52BR3224A(T)/3228A(T)
AC Characteristics
T_A = -40° C to 85° C, Unless Otherwise Specified
#
Symbol
Parameter
1
t_RC
Read Cycle Time
2
t_AA
Address Access Time
3
t_ACS
Chip Select Access Time
4
t_OE
Output Enable to Output Valid
5
t_BA
SLB, SUB Access Time
6
t_CLZ
Chip Select to Output in Low Z
7
t_OLZ
Output Enable to Output in Low Z
8
t_BLZ
SLB, SUB Enable to Output in Low Z
9
t_CHZ
Chip Deselection to Output in High Z
10
t_OHZ
Out Disable to Output in High Z
11
t_BHZ
SLB, SUB Disable to Output in High Z
12
t_OH
Output Hold from Address Change
13
t_WC
Write Cycle Time
14
t_CW
Chip Selection to End of Write
15
t_AW
Address Valid to End of Write
16
t_BW
SLB, SUB Valid to End of Write
17
t_AS
Address Setup Time
18
t_WP
Write Pulse Width
19
t_WR
Write Recovery Time
20
t_WHZ
Write to Output in High Z
21
t_DW
Data to Write Time Overlap
22
t_DH
Data Hold from Write Time
23
t_OW
Output Active from End of Write
70 ns
Min
Max
Unit
70
ns
70
ns
70
ns
35
ns
70
ns
10
ns
5
ns
10
ns
0
25
ns
0
25
ns
0
25
ns
10
ns
70
ns
60
ns
60
ns
60
ns
0
ns
50
ns
0
ns
0
20
ns
30
ns
0
ns
5
ns
AC Test Conditions
TA = -40° C to 85° C, Unless Otherwise Specified
Parameter
Input Pulse Level
Input Rise and Fall Time
Input and Output Timing Reference Level
Output Load
t_CLZ, t_OLZ, t_BLZ, t_CHZ, t_OHZ, t_BHZ, t_WHZ, t_OW
Others
Value
0.4V to 2.2V
5 ns
1.5V
CL = 5 pF + 1 TTL Load
CL = 30 pF + 1 TTL Load
39
3338B–STKD–6/03