FM22LD16_09 RAMTRON [Ramtron International Corporation], FM22LD16_09 Datasheet - Page 9

• Manufacturer Part Number: FM22LD16_09
• Description: 4Mbit F-RAM Memory
• Manufacturer: RAMTRON [Ramtron International Corporation]

Read Cycle AC Parameters (T
Write Cycle AC Parameters (T
Notes
1
2
Capacitance (T
Rev. 2.0
Dec. 2009
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
C
C
RC
CE
AA
OH
AAP
OHP
CA
PC
BA
AS
AH
OE
HZ
OHZ
BHZ
WC
CA
CW
PC
PWC
WP
AS
ASP
AHP
WLC
BLC
WLA
AWH
BS
BH
DS
DH
WZ
WX
WS
WH
Symbol
I/O
IN
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 t
are not tested.
Parameter
Read Cycle Time
Chip Enable Access Time
Address Access Time
Output Hold Time
Page Mode Address Access Time
Page Mode Output Hold Time
Chip Enable Active Time
Precharge Time
/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
Parameter
Write Cycle Time
Chip Enable Active Time
Chip Enable to Write Enable High
Precharge Time
Page Mode Write Enable Cycle Time
Write Enable Pulse Width
Address Setup Time (to /CE low)
Page Mode Address Setup Time
Page Mode Address Hold Time
Write Enable Low to /CE High
/UB, /LB Low to /CE High
Write Enable Low to A(17:2) Change
A(17:2) Change to Write Enable High
/UB, /LB Setup Time (to /CE low)
/UB, /LB Hold Time (to /CE high)
Data Input Setup Time
Data Input Hold Time
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
Input/Output Capacitance (DQ)
Input Capacitance
A
= 25 C , f=1 MHz, V
A
A
= -40 C to + 85 C, V
= -40 C to + 85 C, V
Parameter
DD
= 3.3V)
(to /WE low)
(to /WE low)
DD
DD
= 2.7V to 3.6V unless otherwise specified)
= 2.7V to 3.6V unless otherwise specified)
Min
Min
Min
110
110
110
20
55
55
55
55
55
55
25
16
15
25
25
25
14
10
5
0
0
8
2
0
0
0
0
-
-
-
-
-
-
-
-
-
-
-
Max
Max
Max
110
FM22LD16 - 256Kx16 FRAM
20
55
25
15
10
10
10
10
8
6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Units
Units
Units
pF
pF
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
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
WS
Notes
Notes
Notes
and t
Page 9 of 14
1
1
1
1
1
2
2
WH