Low-Current I2C RTC with 56-Byte NV RAM 7 Maxim Integrated Pin Configurat" />
參數(shù)資料
型號(hào)： DS1308U-18+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 14/16頁(yè)
文件大?。?/td> 0K
描述： IC RTC 56BYTE NVRAM I2C 8UMAX
標(biāo)準(zhǔn)包裝： 50
類型： 時(shí)鐘/日歷
特點(diǎn)： 閏年，NVSRAM，方波輸出
存儲(chǔ)容量： 56B
時(shí)間格式： HH:MM:SS（12/24 小時(shí)）
數(shù)據(jù)格式： YY-MM-DD-dd
接口： I²C，2 線串口
電源電壓： 1.71 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
DS1308
Low-Current I2C RTC with 56-Byte NV RAM
7
Maxim Integrated
Pin Configuration
Pin Description
PIN
NAME
FUNCTION
1
X1
32.768kHz Crystal Connections. The internal oscillator circuitry is designed for use with a crystal
having a specified load capacitance (CL) of 6pF.
Note: For more information about crystal selection and crystal layout considerations, refer to
Application Note 58: Crystal Considerations with Maxim Real-Time Clocks (RTCs).
2
X2
3
VBAT
Battery Supply Input for Lithium Cell or Other Energy Source. Battery voltage must be held between
the minimum and maximum limits for proper operation. Diodes placed in series between the backup
source and the VBAT pin can prevent proper operation. If a backup supply is not required, VBAT
must be grounded. UL recognized to ensure against reverse charging when used with a lithium cell.
4
GND
Ground
5
SDA
Serial Data Input/Output for the I2C serial interface. It is an open-drain output and requires an
external pullup resistor. The pullup voltage can be up to 5.5V, regardless of the voltage on VCC.
6
SCL
Serial Clock Input for the I2C serial interface. Used to synchronize data movement on the serial
interface. The pullup voltage can be up to 5.5V, regardless of the voltage on VCC.
7
SQW/CLKIN
Square-Wave Output/Clock Input. This I/O pin is used to output one of four square-wave
frequencies (1Hz, 4kHz, 8kHz, 32kHz) or accept an external clock input to drive the RTC counter.
In the output mode (ECLK = 0), it is open drain and requires an external pullup resistor. The
square-wave operates on VCC, or on VBAT with BBCLK = 1. The pullup voltage can be up to 5.5V,
regardless of the voltage on VCC. If not used, this pin may be left unconnected.
8
VCC
Primary Power Supply. Decouple the power supply with a 0.1FF capacitor to ground.
SOP
27
SQW/CLKIN
X2
18
VCC
X1
SCL
VBAT
36
SDA
GND
45
DS1308
TOP VIEW
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參數(shù)描述
DS1308U-18+ 功能描述:實(shí)時(shí)時(shí)鐘 LOW CUR 1.8V I2C RTC 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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
DS1308U-18+T 功能描述:實(shí)時(shí)時(shí)鐘 LOW CUR 1.8V I2C RTC 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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
DS1308U-3 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Current I2C RTC with 56-Byte NV RAM
DS1308U-3+ 功能描述:實(shí)時(shí)時(shí)鐘 LOW CUR 3V I2C RTC 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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
DS1308U-3+T 功能描述:實(shí)時(shí)時(shí)鐘 LOW CUR 3V I2C RTC 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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
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