BQ4802Y 具有 CPU 监控器和外部 NVSRAM 控制的符合 Y2K 的并行 RTC,5V Vcc

BQ4802Y 描述

The bq4802Y/bq4802LY real-time clock is a low-power microprocessor peripheral that integrates a time-of-day clock, a century-based calendar, and a CPU supervisor, with package options including a 28-pin SOIC, TSSOP, or SNAPHAT that requires the bq48SH-28x6 to complete the two-piece module. The bq4802Y/ bq4802LY is ideal for fax machines, copiers, industrial control systems, point-of-sale terminals, data loggers, and computers. The bq4802Y/bq4802LY provides direct connections for a 32.768-kHz quartz crystal and a 3-V backup battery. Through the use of the conditional chip enable output (CE\OUT) and battery voltage output (VOUT) pins, the bq4802Y/bq4802LY can write-protect and make non- volatile external SRAMs. The backup cell powers the real-time clock and maintains SRAM information the absence of system voltage.

BQ4802LY BQ4802Y
Supply Voltage(V) 3   5  
Bus Interface Parallel   Parallel  
Operating Temperature Range(°C) 0 to 70   0 to 70  
Pin/Package 28SOIC, 28TSSOP   28SOIC, 28TSSOP  
Approx. Price (US$) 2.50 | 1ku   3.10 | 1ku  
RTC Bytes 16   16
BQ4802Y 特性
BQ4802Y 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
BQ4802YDSH NRND 0 to 70 3.75 | 1ku (DSH) | 28 27 | TUBE 4802LYDSH
BQ4802YDW ACTIVE 0 to 70 3.00 | 1ku SOIC (DW) | 28 20 | TUBE 4802LYDW
BQ4802YDWG4 ACTIVE 0 to 70 3.00 | 1ku SOIC (DW) | 28 20 | TUBE 4802LYDW
BQ4802YDWR ACTIVE 0 to 70 2.50 | 1ku SOIC (DW) | 28 1000 | LARGE T&R 4802LYDW
BQ4802YDWRG4 ACTIVE 0 to 70 2.50 | 1ku SOIC (DW) | 28 1000 | LARGE T&R 4802LYDW
BQ4802YPW ACTIVE 0 to 70 3.00 | 1ku TSSOP (PW) | 28 50 | TUBE 4802LYPW
BQ4802YPWG4 ACTIVE 0 to 70 3.00 | 1ku TSSOP (PW) | 28 50 | TUBE 4802LYPW
BQ4802YPWR ACTIVE 0 to 70 2.50 | 1ku TSSOP (PW) | 28 2000 | LARGE T&R 4802LYPW
BQ4802YPWRG4 ACTIVE 0 to 70 2.50 | 1ku TSSOP (PW) | 28 2000 | LARGE T&R 4802LYPW
BQ4802Y 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
BQ4802YDSH TBD  Call TI  Level-2-220C-1 YEAR BQ4802YDSH BQ4802YDSH
BQ4802YDW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YDW BQ4802YDW
BQ4802YDWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YDWG4 BQ4802YDWG4
BQ4802YDWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YDWR BQ4802YDWR
BQ4802YDWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YDWRG4 BQ4802YDWRG4
BQ4802YPW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YPW BQ4802YPW
BQ4802YPWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YPWG4 BQ4802YPWG4
BQ4802YPWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YPWR BQ4802YPWR
BQ4802YPWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM BQ4802YPWRG4 BQ4802YPWRG4
BQ4802Y 应用技术支持与电子电路设计开发资源下载
  1. BQ4802Y 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)
BQ4802Y 相关工具
名称 型号 公司 工具/软件类型
BQ4802Y 评估模块 BQ4802YEVM Texas Instruments 开发电路板/EVM