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FM3135-GTR 参数 Datasheet PDF下载

FM3135-GTR图片预览
型号: FM3135-GTR
PDF下载: 下载PDF文件 查看货源
内容描述: 集成RTC /闹钟/ F-RAM和嵌入式晶体 [Integrated RTC/Alarm/F-RAM & Embedded Crystal]
分类和应用: 晶体存储内存集成电路光电二极管闹钟
文件页数/大小: 21 页 / 267 K
品牌: RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
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Preliminary
FM3135
Integrated RTC/Alarm/F-RAM & Embedded Crystal
Features
High Integration Device Replaces Multiple Parts
Serial Nonvolatile Memory
Real-time Clock (RTC) with Alarm
Clock Output (Programmable frequency)
64Kb Ferroelectric Nonvolatile RAM
Internally Organized as 8Kx8
Unlimited Read/Write Endurance
45 year Data Retention
NoDelay™ Writes
Fast Two-wire Serial Interface
Up to 1 MHz Maximum Bus Frequency
Supports Legacy Timing for 100 kHz & 400 kHz
RTC & F-RAM Controlled via 2-wire Interface
Real-time Clock/Calendar
Embedded 32.768 kHz Crystal
Backup Current under 1
µA
Seconds through Centuries in BCD format
Tracks Leap Years through 2099
Software Calibration
Supports Battery or Capacitor Backup
Easy to Use Configurations
Operates from 2.7 to 3.6V
20-pin “Green”/RoHS SOIC (-G)
Low Operating Current
Industrial Temperature -40°C to +85°C
Underwriters Laboratory (UL) Recognized
Description
The FM3135 integrates a real-time clock (RTC) and
F-RAM nonvolatile memory. The 32.768kHz crystal
is embedded inside the package. The device operates
from 2.7 to 3.6V.
The FM3135 provides nonvolatile F-RAM which
features fast write speed and unlimited endurance.
This allows the memory to serve as extra RAM for
the system microcontroller or conventional
nonvolatile storage. This memory is truly nonvolatile
rather than battery backed.
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 a crystal
integral to the package and provides a calibration
mode that allows software adjustment of timekeeping
accuracy.
Pin Configuration
NC
NC
ACS
VDD
NC
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
VSS
SCL
SDA
VBAK
VSS
NC
NC
NC
NC
Pin Name
ACS
SDA
SCL
VBAK
VDD
VSS
Function
Alarm/Calibration/SqWave
Serial Data
Serial Clock
Battery-Backup Supply
Supply Voltage
Ground
Ordering Information
FM3135-G
FM3135-GTR
“Green”/RoHS 20-pin SOIC
“Green”/RoHS 20-pin SOIC,
Tape & Reel
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
Page 1 of 21
Rev. 1.2
Feb. 2009