F-RAM Memory. FM28V020 Datasheet

FM28V020 Memory. Datasheet pdf. Equivalent

FM28V020 Datasheet
Recommendation FM28V020 Datasheet
Part FM28V020
Description 256-Kbit (32 K x 8) F-RAM Memory
Feature FM28V020; FM28V020 256-Kbit (32 K × 8) F-RAM Memory 256-Kbit (32 K × 8) F-RAM Memory Features ■ 256-Kbit ferr.
Manufacture Cypress Semiconductor
Datasheet
Download FM28V020 Datasheet




Cypress Semiconductor FM28V020
FM28V020
256-Kbit (32 K × 8) F-RAM Memory
256-Kbit (32 K × 8) F-RAM Memory
Features
256-Kbit ferroelectric random access memory (F-RAM)
logically organized as 32 K × 8
High-endurance 100 trillion (1014) read/writes
151-year data retention (see the Data Retention and
Endurance table)
NoDelay™ writes
Page mode operation
Advanced high-reliability ferroelectric process
SRAM compatible
Industry-standard 32 K × 8 SRAM pinout
70-ns access time, 140-ns cycle time
Superior to battery-backed SRAM modules
No battery concerns
Monolithic reliability
True surface mount solution, no rework steps
Superior for moisture, shock, and vibration
Resistant to negative voltage undershoots
Low power consumption
Active current 5 mA (typ)
Standby current 90 A (typ)
Low-voltage operation: VDD = 2.0 V to 3.6 V
Industrial temperature: –40 C to +85 C
Packages:
28-pin small outline integrated circuit (SOIC) package
28-pin thin small outline package (TSOP) Type I
32-pin thin small outline package (TSOP) Type I
Restriction of hazardous substances (RoHS) compliant
Functional Overview
The FM28V020 is a 32 K × 8 nonvolatile memory that reads and
writes similar to a standard SRAM. A ferroelectric random
access memory or F-RAM is nonvolatile, which means that data
is retained after power is removed. It provides data retention for
over 151 years while eliminating the reliability concerns,
functional disadvantages, and system design complexities of
battery-backed SRAM (BBSRAM). Fast write timing and high
write endurance make the F-RAM superior to other types of
memory.
The FM28V020 operation is similar to that of other RAM devices
and therefore, it can be used as a drop-in replacement for a
standard SRAM in a system. Read and write cycles may be
triggered by CE or simply by changing the address. The F-RAM
memory is nonvolatile due to its unique ferroelectric memory
process. These features make the FM28V020 ideal for
nonvolatile memory applications requiring frequent or rapid
writes.
The device is available in a 28-pin SOIC, 28-pin TSOP I and
32-pin TSOP I surface mount packages. Device specifications
are guaranteed over the industrial temperature range –40 °C to
+85 °C.
For a complete list of related documentation, click here.
Logic Block Diagram
A14-0
CE
WE
OE
A14-3
A 2-0
Control
Logic
32 K x 8
F-RAM Array
...
Column Decoder
I/O Latch & Bus Driver
DQ 7-0
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-86204 Rev. *F
• San Jose, CA 95134-1709 • 408-943-2600
Revised August 12, 2015



Cypress Semiconductor FM28V020
FM28V020
Contents
Pinouts .............................................................................. 3
Pin Definitions .................................................................. 4
Device Operation .............................................................. 5
Memory Operation ....................................................... 5
Read Operation ........................................................... 5
Write Operation ........................................................... 5
Page Mode Operation ................................................. 5
Pre-charge Operation .................................................. 5
SRAM Drop-In Replacement ....................................... 6
Endurance ................................................................... 6
Maximum Ratings ............................................................. 7
Operating Range ............................................................... 7
DC Electrical Characteristics .......................................... 7
Data Retention and Endurance ....................................... 7
Capacitance ...................................................................... 8
Thermal Resistance .......................................................... 8
AC Test Conditions .......................................................... 8
AC Switching Characteristics ......................................... 9
SRAM Read Cycle ...................................................... 9
SRAM Write Cycle ..................................................... 10
Power Cycle Timing ....................................................... 13
Functional Truth Table ................................................... 14
Ordering Information ...................................................... 15
Ordering Code Definitions ......................................... 15
Package Diagrams .......................................................... 16
Acronyms ........................................................................ 19
Document Conventions ................................................. 19
Units of Measure ....................................................... 19
Document History Page ................................................. 20
Sales, Solutions, and Legal Information ...................... 21
Worldwide Sales and Design Support ....................... 21
Products .................................................................... 21
PSoC® Solutions ...................................................... 21
Cypress Developer Community ................................. 21
Technical Support ..................................................... 21
Document Number: 001-86204 Rev. *F
Page 2 of 21



Cypress Semiconductor FM28V020
Pinouts
Figure 1. 28-pin SOIC pinout
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1 28
2 27
3 26
4 25
5 24
6 28-pin SOIC 23
7
(x 8)
22
8
Top view
21
9 (not to scale) 20
10 19
11 18
12 17
13 16
14 15
Figure 2. 28-pin TSOP I pinout
VDD
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
OE
A11
A9
AA138
WE
VDD
A14
A12
A7
A6
A5
A4
A3
22
23
24
25
26
27
28
1
2
3
4
5
6
7
28-pin TSOP I
(x 8)
Top view
(not to scale)
Figure 3. 32-pin TSOP I pinout
21 A10
20 CE
19 DQ7
18 DQ6
17 DQ5
16 DQ4
15 DQ3
14 VSS
13 DQ2
12 DQ1
11 DQ0
10 A0
9 A1
8 A2
NC
OE
A11
A9
AA138
WE
VDD
A14
A12
A7
A6
A5
A4
A3
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32-pin TSOP I
(x 8)
Top view
(not to scale)
32 NC
31 A10
30 CE
29 DQ7
28 DQ6
27 DQ5
26 DQ4
25 DQ3
24 VSS
23 DQ2
22 DQ1
21 DQ0
20 A0
19 A1
18 A2
17 NC
Document Number: 001-86204 Rev. *F
FM28V020
Page 3 of 21







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)