Datasheet Texas Instruments BQ4845S-A4NTR — 数据表
| 制造商 | Texas Instruments |
| 系列 | BQ4845 |
| 零件号 | BQ4845S-A4NTR |
RTC IC W NVSRAM控制，看门狗定时器，uP复位，中断和电池电量低警告28-SOIC
数据表
价格
状态
| Lifecycle Status | Lifebuy (Manufacturer has announced that the device will be discontinued, and a lifetime-buy period is in effect) |
| Manufacture's Sample Availability | No |
打包
| Pin | 28 | 28 |
| Package Type | DW | DW |
| Industry STD Term | SOIC | SOIC |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 1000 | 1000 |
| Carrier | LARGE T&R | LARGE T&R |
| Device Marking | 4845S-N | -A4 |
| Width (mm) | 7.5 | 7.5 |
| Length (mm) | 17.9 | 17.9 |
| Thickness (mm) | 2.35 | 2.35 |
| Pitch (mm) | 1.27 | 1.27 |
| Max Height (mm) | 2.65 | 2.65 |
| Mechanical Data | 下载 | 下载 |
生态计划
| RoHS | Compliant |
应用须知
- U-502 Time-Base Oscillator for RTC ICPDF, 313 Kb, 档案已发布: Sep 5, 1999
Time-Base Oscillator for RTC ICs.The operation of the time-base oscillator is critical to the timekeeping functions of the bq3285, bq4285, and bq4845 series of real-time-clocks (RTCs). This application note describes some basic characteristics of the piezoelectric crystal and the on-chip crystal oscillator circuitry designed into these RTC series. It also includes suggestions for achieving timek - U-500 Using the bq4845 for a Low-Cost RTC/NVSRAM SubsystemPDF, 332 Kb, 档案已发布: Sep 5, 1999
Using the bq4845 for a Low-Cost RTC/NVSRAM Subsystem.The bq4845 combines on one IC a low-power real-time clock (RTC), a microcontroller supervisor, and a nonvolatile control circuit for static RAM. The part is the basis of a low-cost, reliable RTC plus nonvolatile SRAM subsystem for many embedded applications. This application note discusses the key aspects of bq4845 operation: component sele
模型线
系列: BQ4845 (9)
制造商分类
- Semiconductors > Clock and Timing > Real-time Clocks
其他名称:
BQ4845SA4NTR, BQ4845S A4NTR