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ISL12057 の電気的特性と機能

ISL12057のメーカーはIntersil Corporationです、この部品の機能は「Low Cost and Low Power I2C RTC Real Time Clock/Calendar」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL12057
部品説明 Low Cost and Low Power I2C RTC Real Time Clock/Calendar
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL12057 Datasheet, ISL12057 PDF,ピン配置, 機能
www.DataSheet4U.com
ISL12057
® Low Cost and Low Power I2C RTC Real Time Clock/Calendar
Data Sheet
June 15, 2009
FN6755.0
Low Power and Low Cost RTC with Alarm
Function and Dual IRQ pins
The ISL12057 device is a low power real time clock that is
pin compatible and functionally equivalent to Maxim DS1337
with clock/calendar and alarm function.
The oscillator uses an external, low-cost 32.768kHz crystal.
The real time clock tracks time with separate registers for
hours, minutes, and seconds. The device has calendar
registers for date, month, year and day of the week. The
calendar is accurate through 2099, with automatic leap year
correction.
Pinouts
ISL12057
(8 LD SOIC, MSOP)
TOP VIEW
X1 1
X2 2
IRQ2 3
GND 4
8 VDD
7 IRQ1/FOUT
6 SCL
5 SDA
ISL12057
(8 LD µTDFN)
TOP VIEW
X1 1
X2 2
IRQ2 3
GND 4
8 VDD
7 IRQ1/FOUT
6 SCL
5 SDA
Features
• Pin Compatible to Maxim DS1337
• Functionally Equivalent to Maxim DS1337
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Date, Month, and Year
• Dual Interrupts for Frequency Output and Alarm interrupts
• 4 Selectable Frequency Outputs
• 2 Alarms
- Settable to the Second, Minute, Hour, Day of the Week,
and Date
• I2C Interface
- 400kHz Data Transfer Rate
• Small Package Options
- 8 Ld 2mmx2mm µTDFN
- 8 Ld MSOP
- 8 Ld SOIC
- Pb-Free (RoHS Compliant)
Applications
• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Set-Top Box/Television
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• Point Of Sale Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/Automotive
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL12057 pdf, ピン配列
ISL12057
www.DPaitnaSDheeets4Uc.croipmtions
PIN
NUMBER
1
2
3
4
5
6
7
8
SYMBOL
DESCRIPTION
X1 The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz
quartz crystal. This pin can also be driven by an external 32.768kHz oscillator with X2 pin floating.
X2 The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz
quartz crystal.
IRQ2
Interrupt Output 2 is a multi-functional pin that can be used as alarm interrupt. This pin is open drain and requires an
external pull-up resistor. This pin is at high impedance at power up.
GND Ground
SDA
Serial Data (SDA) is a bidirectional pin used to transfer serial data into and out of the device. It has an open drain output
and may be wire OR’ed with other open drain or open collector outputs.
SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device.
IRQ1/FOUT Interrupt Output 1/Frequency Output is a multi-functional pin that can be used as alarm interrupt or frequency output
pin. The function is set via the configuration register. This pin is open drain and requires an external pull-up resistor. It
has a default output of 32.768kHz at power up.
VDD
Power supply
3 FN6755.0
June 15, 2009


3Pages


ISL12057 電子部品, 半導体
ISL12057
www.SDaDtaAShevest4US.cComL Timing
tF
tHIGH
tLOW
tR
SCL
tSU:STA
SDA
(INPUT TIMING)
SDA
(OUTPUT TIMING)
tSU:DAT
tHD:STA
tHD:DAT
tAA tDH
Symbol Table
WAVEFORM
INPUTS
Must be steady
OUTPUTS
Will be steady
May change
from LOW
to HIGH
May change
from HIGH
to LOW
Don’t Care:
Changes Allowed
Will change
from LOW
to HIGH
Will change
from HIGH
to LOW
Changing:
State Not Known
N/A Center Line is
High Impedance
tSU:STO
tBUF
EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR VDD = 5V
5.0V
SDA,
IRQ1/FOUT
AND
IRQ2
1533Ω
FOR VOL= 0.4V
AND IOL = 3mA
100pF
FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE
DEVICE WITH VDD = 5.0V
6 FN6755.0
June 15, 2009

6 Page



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共有リンク

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