CBM32S31A Ultra high precision, I²C interface, integrated RTC/TCXO/crystal

The CBM32S31 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperaturecompensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line.

The CBM32S31 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SO package.The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. Address and data are transferred serially through an I2C bidirectional bus.A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, to provide a reset output, and to automatically switch to the backup supply when necessary. Additionally, the RST pin is monitored as a pushbutton input for generating a μP reset.

Parameters
Features
Applications

Supply(V):2.3 to 5.5
Time holding current(nA):0.84
Load Capacitance(pF):--
Memory Type:None
Interface:I2C
Function:RTC

Highly Accurate RTC Completely Manages All Timekeeping Functions
Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month,Month,Day of the Week, and Year, with Leap-Year Compensation Valid Up to 2100

Accuracy ±2ppm from 0°C to +40°C

Accuracy ±3.5ppm from -40°C to +85°C

Digital Temp Sensor Output: ±3°C Accuracy

Register for Aging Trim

RST Output/Pushbutton Reset Debounce Input

Two Time-of-Day Alarms

Programmable Square-Wave Output Signal
Simple Serial Interface Connects to Most Microcontrollers

Fast (400kHz) I2C Interface
Battery-Backup Input for Continuous Timekeeping

Low Power Operation Extends Battery-Backup Run Time

3.3V Operation
Operating Temperature Ranges: Commercial (0°C to +70°C) and Industrial (-40°C to +85°C)

● Servers

● Telematics

● Utility Power Meters

● GPS

Type	Title	File Size	Date	Download
Selection Guide	Corebai Selection Guide Rev.En2023.pdf	7.73M	2024-01-24	Download

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计算工具

ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。

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Product number	Rating	Inventory(pcs)	Price	Package	MSL	RoHS	MPQ	Operating Temperature Range (℃)	Order
CBM32S31AS16	Industrial grade	0	$ 0.00 	SOP-16	MSL 3	RoHS	Tape and Reel, 2500	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart