FM22L16
Read Cycle AC Parameters (TA = -40° C to + 85° C, VDD = 2.7V to 3.6V unless otherwise specified)
-55
Symbol Parameter
Min
110
-
-
20
-
Max
-
55
110
-
35
-
-
Units
ns
ns
ns
ns
Notes
tRC
Read Cycle Time
tCE
Chip Enable Access Time
Address Access Time
Output Hold Time
Page Mode Address Access Time
Page Mode Output Hold Time
Chip Enable Active Time
tAA
tOH
tAAP
tOHP
tCA
tPC
ns
5
ns
ns
ns
ns
ns
ns
55
55
-
0
55
-
-
-
-
Precharge Time
-
30
-
tBA
tAS
tAH
tOE
tHZ
tOHZ
tBHZ
/UB, /LB Access Time
Address Setup Time (to /CE low)
Address Hold Time (/CE-controlled)
Output Enable Access Time
Chip Enable to Output High-Z
Output Enable High to Output High-Z
/UB, /LB High to Output High-Z
-
10
10
10
10
ns
ns
ns
ns
1
1
1
Write Cycle AC Parameters (TA = -40° C to + 85° C, VDD = 2.7V to 3.6V unless otherwise specified)
-55
Symbol Parameter
tWC Write Cycle Time
tCA
Min
110
55
55
55
5
35
16
0
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
-
-
-
-
Chip Enable Active Time
tCW
tPC
Chip Enable to Write Enable High
Precharge Time
tBHZ
tPWC
tWP
/UB, /LB High to Output High-Z
Page Mode Write Enable Cycle Time
Write Enable Pulse Width
-
-
-
-
-
-
-
-
-
-
10
-
-
-
tAS
Address Setup Time (to /CE low)
Page Mode Address Setup Time (to /WE low)
Page Mode Address Hold Time (to /WE low)
Write Enable Low to /CE High
Write Enable Low to A(17:2) Change
A(17:2) Change to Write Enable High
Data Input Setup Time
tASP
tAHP
tWLC
tWLA
tAWH
tDS
8
15
25
25
110
14
0
-
10
0
tDH
Data Input Hold Time
tWZ
tWX
tWS
Write Enable Low to Output High Z
Write Enable High to Output Driven
Write Enable to /CE Low Setup Time
Write Enable to /CE High Hold Time
1
1
2
2
tWH
0
Notes
1
2
This parameter is characterized but not 100% tested.
The relationship between /CE and /WE determines if a /CE- or /WE-controlled write occurs. The parameters tWS and tWH
are not tested.
Capacitance (TA = 25° C , f=1 MHz, VDD = 3.3V)
Symbol
CI/O
CIN
CZZ
Parameter
Input/Output Capacitance (DQ)
Input Capacitance
Max
Units
pF
pF
Notes
8
6
8
Input Capacitance of /ZZ pin
pF
Rev. 1.0
Mar. 2007
Page 9 of 15
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
