4‐5
1‐2
*2‐3*
4‐5
1‐2
*2‐3*
4‐5
Connect to pin B57
Connect to pin A8
Connect to pin B51
Connect to pin B56
Connect to pin B58
Connect to pin B56
Connect to pin B62
Connect to pin A62
J13
J14
J15
I2C SDA
INTERRUPT
RESET
6‐pin
6‐pin
6‐pin
1‐2
*2‐3*
4‐5
Connect to pin A47
Connect to pin A63
J16
J17
J18
J23
J24
J25
J26
J32
J33
J36
J37
State Saver Enable
FM31L278 RESET
FM31L278 PFO
FM31T378 RESET
FM31T378 INT
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
3‐pin
*1‐2*
2‐3
1‐2
*2‐3*
1‐2
*2‐3*
1‐2
*2‐3*
1‐2
*2‐3*
1‐2
*2‐3*
1‐2
*2‐3*
1‐2
Connects EN pin to B35
Connects EN pin to gnd
Connects to RESET jumper
Disconnects pin from RESET jumper
Connects to INTERRUPT jumper
Disconnects pin from INTERRUPT jumper
Connects to RESET jumper
Disconnects pin from RESET jumper
Connects to INTERRUPT jumper
Disconnects pin from INTERRUPT jumper
Connects to INTERRUPT jumper
Disconnects pin from INTERRUPT jumper
Connects to INTERRUPT jumper
Disconnects pin from INTERRUPT jumper
Disconnects from SPI CS jumper
Connects pin to SPI CS jumper
Connects to INTERRUPT jumper
Disconnects pin from INTERRUPT jumper
Connects to INTERRUPT jumper
Disconnects pin from INTERRUPT jumper
Connects to RESET jumper
FM31T378 FOUT
FM31T378 PFO
FM33256B /CS
FM33256B ACS
FM33256B PFO
FM33256B RESET
*2‐3*
1‐2
*2‐3*
1‐2
*2‐3*
*1‐2*
2‐3
1‐2
*2‐3*
Disconnects pin from RESET jumper
Connects to SPI CS jumper
Disconnects pin from SPI CS jumper
J38
J46
FM25V10 /CS
3‐pin
3‐pin
Enables '138 decoder to drive chip
enables to FM22L16 devices
FM22L16 SELECT
*1‐2*
2‐3
Disables '138 decoder from driving chip
enables to FM22L16 devices
TWR‐FRAM Quick Start Guide
9
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
