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參數(shù)資料
| 型號： | DS1342U+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC I2C W/ALARM 8USOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 類型： | 時鐘/日歷 |
| 特點： | 警報器，閏年，方波輸出 |
| 時間格式： | HH:MM:SS（12/24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 管件 |
15
Maxim Integrated
Low-Current I2C RTCs for High-ESR Crystals
DS1341/DS1342
reads data with ACK or NACK as applicable, and
generates a STOP condition. See Figure 6 for a read
example using the repeated START condition to
specify the starting memory location.
Reading Multiple Bytes from a Slave: The read
operation can be used to read multiple bytes with a
single transfer. When reading bytes from the slave,
the master simply ACKs the data byte if it desires to
read another byte before terminating the transaction.
After the master reads the last byte it must NACK to
indicate the end of the transfer and then it generates
a STOP condition.
Bus Timeout
To avoid an unintended I2C interface timeout, SCL
should not be held low longer than tTIMEOUTMIN. The
I2C interface is in the reset state and can receive a
new START condition when SCL is held low for at least
tTIMEOUTMAX. When the device detects this condition,
SDA is released and allowed to be pulled high by the
external pullup resistor. For the timeout function to work,
the oscillator must be enabled and running.
Applications Information
Power-Supply Decoupling
To achieve the best results when using the DS1341/
DS1342, decouple the VCC power supply with a 0.01FF
and/or 0.1FF capacitor. Use a high-quality, ceramic, sur-
face-mount capacitor if possible. Surface-mount compo-
nents minimize lead inductance, which improves perfor-
mance, and ceramic capacitors tend to have adequate
high-frequency response for decoupling applications.
Using Open-Drain Outputs
The CLKIN/INTA output is open drain and, therefore,
requires an external pullup resistor to realize a logic-high
output level.
SDA and SCL Pullup Resistors
SDA is an open-drain output and requires an external
pullup resistor to realize a logic-high level.
Because the DS1341/DS1342 do not use clock cycle
stretching, a master using either an open-drain output
with a pullup resistor or CMOS output driver (push-pull)
could be used for SCL.
Chip Information
SUBSTRATE CONNECTED TO GROUND
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
8 FSOP
U8+1
8 TDFN-EP
T833+2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1342U+ | 功能描述:實時時鐘 I2C RTC 12pF RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1342U+T&R | 制造商:Maxim Integrated Products 功能描述:I2C RTC 12.5PF UMAX PB FREE T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:MXMDS1342U+T&R LOW-CURRENT IC RTCS FOR H 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/ALARM 8USOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C RTC 12pF |
| DS1342U+T&R | 功能描述:實時時鐘 I2C RTC 12pF RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1342U+TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Current I2C RTCs for High-ESR Crystals |
| DS1343 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Current SPI/3-Wire RTCs |
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