Product Summary

The FM31256-GTR is an integrated device that includes the most commonly needed functions for processor-based systems. Major features of the FM31256-GTR include nonvolatile memory available in various sizes, realtime clock, low-VDD reset, watchdog timer, nonvolatile event counter, lockable 64-bit serial number area, and general purpose comparator that can be used for an early power-fail (NMI) interrupt or other purpose. The FM31256-GTR operates from 2.7 to 5.5V. The device provides nonvolatile RAM available in sizes including 4Kb, 16Kb, 64Kb, and 256Kb versions.

Parametrics

FM31256-GTR absolute maximum ratings: (1)VDD, Power Supply Voltage with respect to VSS: -1.0V to +7.0V; (2)VIN, Voltage on any signal pin with respect to VSS: -1.0V to +7.0V and VIN ≤ VDD+1.0V; (3)VBAK, Backup Supply Voltage: -1.0V to +4.5V; (4)TSTG, Storage Temperature: -55 to +125℃; (5)TLEAD, Lead Temperature (Soldering, 10 seconds): 260℃; (6)VESD, Electrostatic Discharge Voltage: 100V; (7)Package Moisture Sensitivity Level: MSL-2.

Features

FM31256-GTR features: (1)Serial Nonvolatile Memory; (2)Real-time Clock (RTC); (3)Low Voltage Reset; (4)Watchdog Timer; (5)Early Power-Fail Warning/NMI; (6)Two 16-bit Event Counters; (7)Serial Number with Write-lock for Security; (8)Active-low Reset Output for VDD and Watchdog; (9)Programmable VDD Reset Trip Point; (10)Manual Reset Filtered and Debounced; (11)Programmable Watchdog Timer; (12)Dual Battery-backed Event Counter Tracks System Intrusions or other Events; (13)Comparator for Early Power-Fail Interrupt; (14)64-bit Programmable Serial Number with Lock.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
FM31256-GTR
FM31256-GTR

Ramtron

F-RAM 256K w/RTC Pwr Mon WDT Bat Sw PF

Data Sheet

0-2500: $2.86
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
FM3100
FM3100

Rectron

Diodes (General Purpose, Power, Switching) GP Si Rectifier SMC,3A,100V

Data Sheet

0-3000: $0.32
3000-6000: $0.31
FM3100-A
FM3100-A

Other


Data Sheet

Negotiable 
FM3100-AL
FM3100-AL

Other


Data Sheet

Negotiable 
FM3100-ALN
FM3100-ALN

Other


Data Sheet

Negotiable 
FM3100-AN
FM3100-AN

Other


Data Sheet

Negotiable 
FM3100-B
FM3100-B

Other


Data Sheet

Negotiable