BQ4842Y RTC 模块,具有 128Kx8 NVSRAM、看门狗定时器、加电复位、中断与低电池电量警告

BQ4842Y 描述

The bq4842Y RTC Module is a non-volatile 1,048,576-bit SRAM organized as 131,072 words by 8 bits with an integral accessible real-time clock and CPU supervisor. The CPU supervisor provides a programmable watchdog timer and a microprocessor reset. Other features include alarm, power-fail, and periodic interrupts, and a battery-low warning. The device combines an internal lithium battery, quartz crystal, clock and power-fail chip, and a full CMOS SRAM in a plastic 32-pin DIP module. The RTC Module directly replaces industry-standard SRAMs and also fits into many EPROM and EEPROM sockets without any requirement for special write timing or limitations on the number of write cycles. Registers for the real-time clock, alarm and other special functions are located in registers 1FFF0h\x96 1FFFFh of the memory array

BQ4822Y BQ4830Y BQ4832Y BQ4842Y BQ4850Y BQ4852Y
Supply Voltage(V) 5   5   5   5   5   5  
Bus Interface Parallel   Parallel   Parallel   Parallel   Parallel   Parallel  
Memory Density(Kb) 64   256   256   1024   4096   4096  
Operating Temperature Range(°C) 0 to 70   0 to 70   0 to 70   0 to 70   -40 to 85   0 to 70  
Pin/Package 28DIP MODULE   28DIP MODULE   32DIP MODULE   32DIP MODULE   32DIP MODULE   36DIP MODULE  
Approx. Price (US$) 17.25 | 1ku   14.10 | 1ku   22.65 | 1ku   26.30 | 1ku   31.60 | 1ku   52.55 | 1ku  
RTC Bytes 16   8   16   16   8   16
BQ4842Y 特性
BQ4842Y 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
BQ4842YMA-85 ACTIVE 0 to 70 22.65 | 1ku DIP MODULE (MA) | 32 12  
BQ4842Y 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
BQ4842YMA-85 Pb-Free (RoHS)  Call TI  N/A for Pkg Type BQ4842YMA-85 BQ4842YMA-85
BQ4842Y 应用技术支持与电子电路设计开发资源下载
  1. BQ4842Y 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器实时时钟产品选型与价格 . xls
  3. PowerPAD™ Thermally Enhanced Package   (PDF  1040 KB)
  4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)   (PDF  2206 KB)
  5. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  6. PowerPAD™ Made Easy (PDF 57 KB)
  7. 标准线性产品交叉参考 (Rev. D)   (PDF  1058 KB)
  8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  9. 所选封装材料的热学和电学性质 (PDF 645 KB)
  10. 高速数据转换 (PDF 1967 KB)
BQ4842Y 相关工具
名称 型号 公司 工具/软件类型
BQ4842Y 评估模块 BQ4842YEVM Texas Instruments 开发电路板/EVM