900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Ramtron

FM3130 Datasheet Preview

FM3130 Datasheet

Integrated RTC/Alarm and 64Kb F-RAM

No Preview Available !

www.DataSheet.co.kr
FM3130
Integrated RTC/Alarm and 64Kb F-RAM
Features
Real-time Clock/Calendar
High Integration Device Replaces Multiple Parts
Backup Current under 1 A
Serial Nonvolatile Memory
Seconds through Centuries in BCD format
Real-time Clock (RTC) with Alarm
Tracks Leap Years through 2099
Clock Output (Programmable frequency)
Uses Standard 32.768 kHz Crystal (12.5pF)
Software Calibration
64Kb Ferroelectric Nonvolatile RAM
Supports Battery or Capacitor Backup
Internally Organized as 8Kx8
Unlimited Read/Write Endurance
45 year Data Retention
NoDelay™ Writes
Fast Two-wire Serial Interface
EUp to 1 MHz Maximum Bus Frequency
Supports Legacy Timing for 100 kHz & 400 kHz
RTC & F-RAM Controlled via 2-wire Interface
T tDescription
nThe FM3130 integrates a real-time clock (RTC) and
E eF-RAM nonvolatile memory. The device operates
from 2.7 to 3.6V.
L em 4The FM3130 provides nonvolatile F-RAM which
c 6features fast write speed and unlimited endurance.
la 1This allows the memory to serve as extra RAM for
O p 3the system microcontroller or conventional
nonvolatile storage. This memory is truly nonvolatile
e Mrather than battery backed.
S R FThe real-time clock (RTC) provides time and date
t :information in BCD format. It can be permanently
c epowered from external backup voltage source, either
B ire tiva battery or a capacitor. The timekeeper uses a
common external 32.768 kHz crystal and provides a
D acalibration mode that allows software adjustment of
O No Alterntimekeeping accuracy.
Easy to Use Configurations
Operates from 2.7 to 3.6V
8-pin “Green” SOIC (-G) and TDFN (-DG)
Low Operating Current
Industrial Temperature -40C to +85C
Underwriters Laboratory (UL) Recognized
Pin Configuration
X1
X2
VBAK
VSS
1
2
3
4
8
7
6
5
VDD
ACS
SCL
SDA
X1
X2
VBAK
VSS
1 Top View 8
27
36
45
VDD
ACS
SCL
SDA
Pin Name
X1, X2
ACS
SDA
SCL
VBAK
VDD
VSS
Function
Crystal Connections
Alarm/Calibration/SqWave
Serial Data
Serial Clock
Battery-Backup Supply
Supply Voltage
Ground
Ordering Information
FM3130-G
“Green”/RoHS 8-pin SOIC
FM3130-GTR “Green”/RoHS 8-pin SOIC,
Tape & Reel
FM3130-DG “Green”/RoHS 8-pin TDFN
FM3130-DGTR “Green”/RoHS 8-pin TDFN,
Tape & Reel
This product conforms to specifications per the terms of the Ramtron
standard warranty. The product has completed Ramtron‟s internal
qualification testing and has reached production status.
Rev. 3.2
Sept. 2011
Ramtron International Corporation
1850 Ramtron Drive, Colorado Springs, CO 80921
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
Page 1 of 22
Datasheet pdf - http://www.DataSheet4U.net/




Ramtron

FM3130 Datasheet Preview

FM3130 Datasheet

Integrated RTC/Alarm and 64Kb F-RAM

No Preview Available !

www.DataSheet.co.kr
FM3130 Integrated RTC/Alarm with 64Kb FRAM
SCL
SDA
2-Wire
Interface
LockOut
F-RAM
Array
Special
Function
Registers
RTC Registers
X1
RTC Cal.
RTC
X2
VDD
ETEentVBAK
VSW
-
+
Switched Power
Alarm
Alarm
512Hz/SQW
Nonvolatile
Battery Backed
Figure 1. Block Diagram
ACS
L lacem164Pin Descriptions
O p 3Pin Name
X1, X2
Type
I/O
S Re FMACS Output
B Direct ative:SDA
O No AlternSCL
I/O
Input
Pin Description
32.768 kHz crystal connection. When using an external oscillator, apply the clock to X1
and a DC mid-level to X2 (see Crystal Type section for suggestions).
Alarm/Calibration/SquareWave: This is an open-drain output that requires an external
pullup resistor. The alarm, calibration, and square wave functions all share this output.
In Alarm mode, this pin acts as the active-low alarm output. In Calibration mode, a 512
Hz square-wave is driven out. In SquareWave mode, the user may select a frequency of
1, 512, 4096, or 32768 Hz to be used as a continuous output. Refer to Table 3. Control
Bit Settings for ACS Pin to determine the bit settings for each mode.
Serial Data & Address: This is a bi-directional line for the two-wire interface. It is
open-drain and is intended to be wire-OR‟d with other devices on the two-wire bus. The
input buffer incorporates a Schmitt trigger for noise immunity and the output driver
includes slope control for falling edges. A pull-up resistor is required.
Serial Clock: The serial clock line for the two-wire interface. Data is clocked out of the
part on the falling edge, and data into the device on the rising edge. The SCL input also
incorporates a Schmitt trigger input for noise immunity.
VBAK
Supply Backup supply voltage: A 3V battery or a large value capacitor. If no backup supply is
used, this pin should be tied to VSS. The trickle charger is UL recognized and ensures no
excessive current when using a lithium battery.
VDD
Supply Supply Voltage.
VSS Supply Ground
Rev. 3.2
Sept. 2011
Page 2 of 22
Datasheet pdf - http://www.DataSheet4U.net/


Part Number FM3130
Description Integrated RTC/Alarm and 64Kb F-RAM
Maker Ramtron
PDF Download

FM3130 Datasheet PDF






Similar Datasheet

1 FM3130 Integrated RTC/Alarm and 64Kb F-RAM
Ramtron
2 FM3135 Integrated RTC/Alarm/F-RAM & Embedded Crystal
Ramtron





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy