CBM13S38A I ² C RTC with 56 bytes of NV RAM

The CBM13S38 serial real-time clock (RTC) is a lowpower, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C interface. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date 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 AM/PM indicator. The CBM13S38 has a built-in power sense circuit that detects power failures and automatically switches to the backup supply, maintaining time and date operation.

Parameters
Features
Applications

Supply(V):1.71 to 5.5
Time holding current(nA):0.8
Load Capacitance(pF):12.5
Memory Type:NV SRAM
Interface:I2C
Function:RTC

Completely Manages All Timekeeping Functions

RTC Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100

56-Byte, Battery-Backed, GeneralPurpose RAM with Unlimited Writes Programmable Square-Wave Output Signal
Surface-Mount Package with an Integrated Crystal (DS1338C) Saves Additional Space and Simplifies Design
Interfaces with Most Microcontrollers

I2C Serial Interface
Low-Power Operation Extends Battery Backup Run Time

Automatic Power-Fail Detect and Switch Circuitry
-40°C to +85°C Industrial Temperature Range Supports Operation in a Wide Range of Applications

Handhelds (GPS, POS Terminal)
Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance)
Office Equipment (Fax/Printer, Copier)
Medical (Glucometer, Medicine Dispenser)
Telecommunications (Router, Switcher, Server)
Other (Utility Meter, Vending Machine, Thermostat, Modem)

Type	Title	File Size	Date	Download
Selection Guide	Corebai Selection Guide Rev.En2025.pdf	7.73M	2024-01-24	Download

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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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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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Ordering & Quality

Product number	Rating	Inventory(pcs)	Price	Package	MSL	RoHS	MPQ	Operating Temperature Range (℃)	Order
CBM13S38AS8	Industrial grade	0	$ 0.00 	SOP-8	MSL 3	RoHS	Tape and Reel, 2500	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM13S38AS8	Industrial grade	0	$ 0.00 	SOP-8	MSL 3	RoHS	Tape and Reel, 2500	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM13S38AMS8	Industrial grade	0	$ 0.00 	MSOP-8	MSL 3	RoHS	Tape and Reel, 2500	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM13S38AS16	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
CBM13S38AS8	Industrial grade	0	$ 0.00 	SOP-8	MSL 3	RoHS	Tape and Reel, 2500	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart

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