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
- Real-Time Clock Counts Seconds Through Centuries in BCD Format
- bq4802Y: 5-V Operation
- BQ4802LY: 3.3-V Operation
- On-Chip Battery-Backup Switchover Circuit With Nonvolatile Control for External SRAM
- Less Than 500 nA of Clock Operation Current in Backup Mode
- Microprocessor Reset With Push-Button Override
- Independent Watchdog Timer With Programmable Time-Out Period
- Power-Fail Interrupt Warning
- Programmable Clock Alarm Interrupt Active in Battery-Backup Mode
- Programmable Periodic Interrupt
- Battery-Low Warning
- 28-pin SOIC, TSSOP, and SNAPHAT Package Options
- APPLICATIONS
- Telecommunications Base Stations
- Servers
- Handheld Data Collection Equipment
- Medical Equipment
- Handheld Instrumentation
- Test Equipment
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
- BQ4802Y 数据资料 dataSheet 下载.PDF
- TI 德州仪器实时时钟产品选型与价格 . xls
- PowerPAD™ Thermally Enhanced Package
(PDF 1040 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- PowerPAD™ Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 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 |
