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FM31T372 bảng dữ liệu(PDF) 2 Page - Ramtron International Corporation

tên linh kiện FM31T372
Giải thích chi tiết về linh kiện  System Supervisor & Temperature Compensated RTC(TCXO) with Embedded Crystal
PDF  26 Pages
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nhà sản xuất  RAMTRON [Ramtron International Corporation]
Trang chủ  http://www.ramtron.com
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FM31T372 bảng dữ liệu(HTML) 2 Page - Ramtron International Corporation

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FM31T372/374/376/378-G
Rev. 1.1
Apr. 2011
Page 2 of 26
A general-purpose comparator compares an external
input pin to the onboard 1.2V reference. This is
useful for generating a power-fail interrupt (NMI) but
can be used for any purpose. The family also includes
a programmable 64-bit serial number that can be
locked making it unalterable. Additionally it offers a
dual battery-backed event counter that tracks the
number of rising or falling edges detected on
dedicated input pins.
Pin Configuration
Pin Name
Function
CNT1, CNT2
Event Counter Inputs
A0, A1
Device Select inputs
CAL/PFO
Clock Calibration and Early
Power-Fail Output
/RST
Reset Input/Output
VSS
Ground
VBAK
Battery-Backup Supply
PFI
Early Power-fail Input
/INT
Event Counter Driven Interrupt
Output
FOUT
32.768 kHz Clock Output
SDA
Serial Data
SCL
Serial Clock
VDD
Supply Voltage
Ordering Information
Base Configuration
Memory Size
Operating Voltage
Reset Threshold
Ordering Part Number
FM31T378
256Kb
2.7-5.5V
2.6V, 2.9, 3.9, 4.4V
FM31T378-G
FM31T376
64Kb
2.7-5.5V
2.6V, 2.9, 3.9, 4.4V
FM31T376-G
FM31T374
16Kb
2.7-5.5V
2.6V, 2.9, 3.9, 4.4V
FM31T374-G
FM31T372
4Kb
2.7-5.5V
2.6V, 2.9, 3.9, 4.4V
FM31T372-G
VDD
VBAK
SCL
SDA
VSS
/INT
FOUT
CAL/PFO
CNT1
PFI
RST
A0
A1
CNT2
1
2
3
4
5
6
7
14
13
12
11
10
9
8



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