BQ4845YS-A4TR

Mfr. #:: BQ4845YS-A4TR
描述:: Real Time Clock Watchdog Timer
生命週期:: 製造商新產品
數據表:: BQ4845YS-A4TR 數據表
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更多信息:: BQ4845YS-A4TR 更多信息 BQ4845YS-A4TR Product Details

產品屬性
屬性值

製造商：: 德州儀器

產品分類：: 實時時鐘

RoHS：: Y

安裝方式：: 貼片/貼片

包裝/案例：: SOIC-28

RTC總線接口：: 平行線

時間格式：: 時:分:秒

備用電池切換：: 備份切換

RTC 內存大小：: 16 B

電源電壓 - 最大值：: 5.5 V

電源電壓 - 最小值：: 4.5 V

最低工作溫度：: - 40 C

最高工作溫度：: + 85 C

打包：: 捲軸

功能：: 鬧鐘、日曆、時鐘、定時器中斷

系列：: BQ4845Y

品牌：: 德州儀器

產品類別：: 實時時鐘

出廠包裝數量：: 1000

子類別：: 時鐘和定時器 IC

單位重量：: 0.025778 oz

Tags: BQ4845YS-A, BQ4845YS, BQ4845Y, BQ4845, BQ484, BQ48, BQ4

Service Guarantees

We guarantee 100% customer satisfaction.

Quality Guarantees

We provide 90-360 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.
Our experienced sales team and tech support team back our services to satisfy all our customers.

we buy and manage excess electronic components, including excess inventory identified for disposal.
Email us if you have excess stock to sell.

Email: [email protected]

Step1:
Vacuum Packaging with PL

Step2:
Anti-Static Bag

Step3:
Packaging Boxes

BQ4845YS-A4TR 描述

***roFlash: Real Time Clock Parallel 16byte Clock/Calendar/Alarm/Timer/Interrupt 28-Pin SOIC T/R

***ark: Real Time Clock IC; Date Format:BCD; Time Format:BCD; Clock IC Type:RTC; Interface Type:Parallel; Supply Voltage Range:4.5V to 5.5V; Digital IC Case Style:SOIC; No. of Pins:28; Operating Temperature Range:0°C to +70°C ;RoHS Compliant: Yes

***as Instruments: The bq4845 Real-Time Clock is a low-power microprocessor peripheral that integrates a time-of-day clock, a 100-year calendar, and a CPU supervisor in a 28-pin SOIC or DIP. The bq4845 is ideal for fax machines, copiers, industrial control systems, point-of-sale terminals, data loggers, and computers. The bq4845 provides direct connections for a 32.768KHz quartz crystal and a 3V backup battery. Through the use of the conditional chip enable output (CE\OUT) and battery voltage output (VOUT) pins, the bq4845 can write-protect and make nonvolatile external SRAMs. The backup cell powers the real-time clock and maintains SRAM information in the absence of system voltage. The bq4845 contains a temperature-compensated reference and comparator circuit that monitors the status of its voltage supply. When the bq4845 detects an out-of-tolerance condition, it generates an interrupt warning and subsequently a microprocessor reset. The reset stays active for 200ms after VCC rises within tolerance, to allow for power supply and processor stabilization. The bq4845 also has a built-in watchdog timer to monitor processor operation. If the microprocessor does not toggle the watchdog input (WDI) within the programmed time-out period, the bq4845 asserts WDO\ and RST\. WDI unconnected disables the watchdog timer. The bq4845 can generate other interrupts based on a clock alarm condition or a periodic setting. The alarm interrupt can be set to occur from once per second to once per month. The alarm can be made active in the battery-backup mode to serve as a system wake-up call. For interrupts at a rate beyond once per second, the periodic interrupt can be programmed with periods of 30.5us to 500ms.

Market price

型號	描述	庫存	價格
BQ4845YS-A4TR DISTI # BQ4845YS-A4TR-ND	IC RTC CLK/CALENDAR PAR 28-SOIC RoHS: Compliant Min Qty: 1000 Container: Tape & Reel (TR)	Limited Supply - Call
BQ4845YS-A4TR DISTI # 595-BQ4845YS-A4TR	Real Time Clock Watchdog Timer RoHS: Compliant	0
BQ4845YS-A4TR	Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO28 RoHS: Compliant	750	1000:$3.1300 500:$3.3000 100:$3.4300 25:$3.5800 1:$3.8500

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