RAMTRON FM31256

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F-RAM Memory Module
Nonvolatile F-RAM
Memory Module (TWR-FRAM)
Compatible with the Freescale Tower System
tower system
Get to know the TWR-FRAM
Battery clip
(3V battery included) 256-Kb I2C Serial F-RAM
1-Mb SPI
Serial F-RAM
4-Mb Parallel
F-RAM
8-bit nonvolatile
GPIO State Saver
256-Kb
l2C TCXO/
Processor
Companion
Primary (Functional)
Connections
256-Kb I2C RTC/
Processor Companion
256-Kb SPI RTC/
Processor Companion
Requires use with Tower System processor module and
elevator modules (TWR-ELEV) - sold separately
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How to build your TWR-FRAM
ownload and install software from www.ramtron.com/go/TWR-FRAM.
3 Step 1 D
Download Quick Start Guide and supporting files.
3 Step 2 Install 3V lithium battery on the TWR-FRAM board.
The clip is rigid; please use care when installing
the battery.
3 Step 3 Locate the Elevator Modules (sold separately),
identified by the four card-edge connections.
3 Step 4 Identify each Elevator Module as either Primary
Elevator (white connections) or Secondary Elevator (black connections).
3 Step 5 Plug primary connections side of the TWR-FRAM board to the Primary
Elevator. Place the TWR-FRAM in top position of the Elevator (see inset photo).
This provides easy access to the jumper pins.
3 Step 6 Identify the primary and secondary card edges of the Processor Module
(TWR-K53N512 or similar device) and any additional modules you add to
your tower system.
3 Step 7 Plug the primary card edge of each module into the Primary (functional) Elevator.
3 Step 8 Place the Secondary Elevator module onto the secondary card edges.
3 Step 9 Follow instructions in the Quick Start Guide.
Download software from www.ramtron.com/go/TWR-FRAM
tower system
3-pin jumper
3-pin jumper
TWR-FRAM
Jumper Options
1 2 3
1The2 following
3
tables show all jumper options available.
The *default* installed jumper settings are shown in the bold
with asterisks. The jumper pin positions are shown below:
4-pin jumper
4 3
1 2
4-pin jumper
4 3
1 2
3-pin jumper
6-pin jumper
6 5 4
1 2 3
6-pin jumper
6 5 4
1 2 3
Jumper Option
J1
DSPI Voltage
J2
VTWR Voltage
J32
FM33256B CS
J38
FM25V10 CS
J8
SPI SCK
J10
SPI CS
J4
SPI MISO
1 2 3
4-pin jumper
4 3
1 2
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Type
4-pin
4-pin
3-pin
3-pin
6-pin
6-pin
6-pin
Setting Description
Jumper Option
Type
Setting Description
1-2
Connect to pin B10
*2-3*
Connect to pin B45
DSPI voltage 1.8V
4-5
Connect to pin B57
1-2
VTWR voltage 5V
1-2
Connect to pin B7
*3-4*
VTWR voltage 3.3V
*2-3*
Connect to pin B48
*2-3*
Connects pin to SPI CS
4-5
Connect to pin B58
1-2
Disconnects pin to SPI CS
1-2
Connect to pin B9
1-2
Connects pin to SPI CS
*2-3*
Connect to pin B46
*2-3*
Disconnects pin to SPI CS
4-5
Connect to pin B47
1-2
Connect to pin B7
5-6
Connect to pin B55
*2-3*
Connect to pin B48
1-2
Connect to pin B11
4-5
Connect to pin B58
*2-3*
Connect to pin B44
1-2
Connect to pin B9
4-5
Connect to pin B56
*2-3*
Connect to pin B46
1-2
Connect to pin B10
4-5
Connect to pin B47
*2-3*
Connect to pin B45
5-6
Connect to pin B55
4-5
Connect to pin B57
1-2
Connect to pin B11
1-2
/SHDN DSPI via pin B22
*2-3*
Connect to pin B44
*3-4*
/SHDN DSPI via pin A35
4-5
Connect to pin B56
1-2
DSPI voltage 1.6V
2-3
DSPI voltage 3.0V
*3-4*
J7
J9
J11
J5
J6
J3
SPI MOSI
DSPI CLK
DSPI CS
DSPI D1
DSPI D0
DSPI PWR
6-pin
6-pin
6-pin
6-pin
6-pin
4-pin
(continued on next page)
tower system
TWR-FRAM Jumper Options
Jumper Option
J12
J13
J14
J15
J16
J18
J17
J26
J23
I2C SCL
I2C SDA
INTERRUPT
RESET
State Saver Enable
FM31256 PFO
FM31256 RESET
FM31T378 PFO
FM31T378 RESET
Type
6-pin
6-pin
6-pin
6-pin
3-pin
3-pin
3-pin
3-pin
3-pin
(continued from previous page)
Setting Description
1-2
Connect to pin A7
*2-3*
Connect to pin B50
4-5
Connect to pin B57
1-2
Connect to pin A8
*2-3*
Connect to pin B51
4-5
Connect to pin B56
1-2
Connect to pin B58
*2-3*
Connect to pin B56
4-5
Connect to pin B62
1-2
Connect to pin A62
*2-3*
Connect to pin A47
4-5
Connect to pin A63
*1-2*
Connects EN pin to B35
2-3
Connects EN pin to gnd
1-2
Connects to INTERRUPT jumper
*2-3*
Disconnects pin from INTERRUPT jumper
1-2
Connects to RESET jumper
*2-3*
Disconnects pin from RESET jumper
1-2
Connects to INTERRUPT jumper
*2-3*
Disconnects pin from INTERRUPT jumper
1-2
Connects to RESET jumper
*2-3*
Disconnects pin from RESET jumper
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Jumper Option
J25
J24
J33
J36
Type
FM31T378 FOUT
3-pin
FM31T378 INT
3-pin
FM33256B ACS
3-pin
FM33256B PFO
3-pin
J37
FM33256B RESET
3-pin
J46
FM22L16 SELECT
3-pin
Setting
Description
1-2
Connects to INTERRUPT jumper
*2-3*
Disconnects pin from INTERRUPT jumper
1-2
Connects to INTERRUPT jumper
*2-3*
Disconnects pin from INTERRUPT jumper
1-2
Connects to INTERRUPT jumper
*2-3*
Disconnects pin from INTERRUPT jumper
1-2
Connects to INTERRUPT jumper
*2-3*
Disconnects pin from INTERRUPT jumper
1-2
Connects to RESET jumper
*2-3*
Disconnects pin from RESET jumper
*1-2*
Enables ‘138 decoder to drive chip
enables to FM22L16 devices
2-3
Disables ‘138 decoder from driving chip
enables to FM22L16 devices
TWR-FRAM Features
Part Number
FM22L16
Quantity
Component
2
4-Mb Parallel F-RAM (expandable to 8-Mb)
8-bit non-volatile GPIO State Saver
FM1106
4
FM25V10
1
1-Mb SPI Serial FRAM
FM24W256
1
256-Kb I2C Serial FRAM
FM31T378
1
256-Kb I2C TCXO and Processor Companion
FM31256
1
256-Kb I2C RTC/Processor Companion
FM33256B
1
256-Kb SPI RTC/Processor Companion
tower system
Learn more For more information about the TWR-FRAM module, visit
www.ramtron.com/go/TWR-FRAM. Additional information
about the Freescale Tower System is available from
www.freescale.com/tower.
Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off.
All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.
Doc number: TWR_FRAM_Read_Me / Rev. 09/12