FM31T378-G

更新时间： 2024-11-02 11:57:27

品牌	Logo	应用领域
铁电 - RAMTRON		晶体电源电路电源管理电路石英晶振温度补偿晶振光电二极管监控时钟
页数	文件大小	规格书
26页	796K
描述
System Supervisor & Temperature Compensated RTC(TCXO) with Embedded Crystal

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中文翻译

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技术参数
数据手册

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FM31T378-G 技术参数

生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SOP,	针数：	14
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.82
Is Samacsys：	N	其他特性：	RESET THRESHOLD VOLTAGES ARE 2.6V, 2.9V, 3.9V, 4.4V
可调阈值：	NO	模拟集成电路 - 其他类型：	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：	R-PDSO-G14	长度：	8.64 mm
信道数量：	1	功能数量：	1
端子数量：	14	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	认证状态：	Not Qualified
座面最大高度：	1.75 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.7 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	3.9 mm	Base Number Matches：	1

FM31T378-G 数据手册

Preliminary

FM31T372/374/376/378

System Supervisor & Temperature Compensated RTC

(TCXO) with Embedded Crystal



No External Crystal Required

Offset Register to Correct for Crystal Aging

Supports Battery or Capacitor Backup

Features

High Integration Device Replaces Multiple Parts



Real-time Clock (RTC)

Embedded 32.768kHz Crystal

Temperature Compensated

Processor Companion



32.768 kHz Clock Output



32.768 kHz Clock Output

Low-V_DDDetection Drives Reset

Watchdog Timer

Early Power-Fail Warning/NMI

Two 16-bit Event Counters with Event Driven

Interrupt Output

Active-low Reset Output for V_DDand Watchdog

Programmable V_DDReset Trip Point

Manual Reset Filtered and Debounced

Programmable Watchdog Timer

Dual Battery-backed Event Counter Tracks

System Intrusions or other Events

Event Counter Driven Interrupt Output

Comparator for Early Power-Fail Interrupt

64-bit Programmable Serial Number with Lock



Serial Number with Write-lock for Security



Ferroelectric Nonvolatile RAM



4Kb, 16Kb, 64Kb, and 256Kb versions

Unlimited Read/Write Endurance

10 year Data Retention

Fast Two-wire Serial Interface



Up to 1 MHz Maximum Bus Frequency

NoDelay™ Writes

Supports Legacy Timing for 100 kHz & 400 kHz

Device Select Pins for up to 4 Memory Devices

RTC, Supervisor Controlled via 2-wire Interface

Real-time Clock/Calendar



Temp-Compensated Using On-Chip Sensor

 5 ppm over -40°C to +85°C

Accuracy  2 ½ min. per year

Easy to Use Configurations



Operates from 2.7 to 5.5V

Small Footprint 14-pin “Green” SOIC (-G)

Low Operating Current



Backup Current 1.4 A (max.) at +25C

Seconds through Centuries in BCD format

Tracks Leap Years through 2099

-40C to +85C Operation

Description

The FM31T37x devices integrate 4Kb, 16Kb, 64Kb,

and 256Kb of F-RAM memory. F-RAM offers

superior write speed and unlimited endurance. This

allows the memory to provide system data collection

and as read/write RAM storage. This memory is truly

nonvolatile rather than battery-backed.

The FM31T37x is a family of integrated devices that

includes the most commonly needed functions for

processor-based systems. Major features include

nonvolatile F-RAM memory available in various

sizes, temperature-compensated real-time clock with

embedded crystal, 32.768kHz clock output,

low-VDD reset, watchdog timer, battery backed

event counter, event driven interrupt output, lockable

64-bit serial number area, general purpose

comparator that can be used for an early power-fail

(NMI) interrupt or other purpose, and 2-wire serial

interface to a host microcontroller. The family

operates from 2.7 to 5.5V.

The processor companion includes commonly needed

CPU support functions. Supervisory functions

include a reset output signal controlled by either a

low VDD condition or a watchdog timeout. /RST

goes active when VDD drops below a programmable

threshold and remains active for 100 ms after VDD

rises above the trip point. A programmable watchdog

timer runs from 100 ms to 3 seconds. The watchdog

timer is optional, but if enabled it will assert the reset

signal for 100 ms if not restarted by the host before

the timeout. A flag-bit indicates the source of the

reset.

The real-time clock (RTC) provides time and date

information in BCD format. It can be permanently

powered from external backup voltage source, either

a battery or a capacitor. The timekeeper uses an

internal 32.768 kHz crystal which is factory-

calibrated for excellent timekeeping accuracy over

the industrial temperature range.

This is a product that has fixed target specifications but are subject

to change pending characterization results.

Ramtron International Corporation

1850 Ramtron Drive, Colorado Springs, CO 80921

(800) 545-FRAM, (719) 481-7000

http://www.ramtron.com

Rev. 1.1

Apr. 2011

Page 1 of 26

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中文翻译

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与FM31T378-G相关器件

型号	品牌	获取价格	描述	数据表
FM320	RECTRON	获取价格	SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER(VOLTAGE RANGE 20 to 100 Volts CURRENT 3.0 Amperes
FM320	FORMOSA	获取价格	Silicon epitaxial planer type
FM3200	RECTRON	获取价格	暂无描述
FM32000	RECTRON	获取价格	Reverse Voltage Vr : 2000 V;Forward Current Io : 3.0 A;Max Surge Current : 100 A;Forward V
FM3200A	RECTRON	获取价格	Rectifier Diode, Schottky, 1 Phase, 1 Element, 3A, 200V V(RRM), Silicon, DO-214AC, ROHS CO
FM3200B	RECTRON	获取价格	Reverse Voltage Vr : 200 V;Forward Current Io : 3.0 A;Max Surge Current : 100 A;Forward Vo
FM3200BF	RECTRON	获取价格	暂无描述
FM3200B-T-HF	RECTRON	获取价格	Rectifier Diode,
FM3200L	RECTRON	获取价格	SURFACE MOUNT SCHOTTKY BARRIER RECTIFIER VOLTAGE RANGE 20 to 200 Volts CURRENT 3.0 Ampere
FM3200-T	RECTRON	获取价格	Rectifier Diode,

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