Overview
The BQ4847YMT is a real-time clock (RTC) integrated circuit produced by Texas Instruments. Although this component is currently obsolete and no longer manufactured, it was designed to provide accurate timekeeping and other useful features for various electronic systems. The BQ4847YMT includes an integrated battery and crystal, ensuring continuous operation even during power outages.
Key Specifications
| Specification | Value |
|---|---|
| Counting Format | BCD (Binary Coded Decimal) |
| Time Range | Seconds through years |
| Logic Compatibility | CMOS, TTL, MOS |
| Operating Frequency | Up to 3MHz and beyond |
| Battery Backup | On-chip battery-backup switch |
| Status | Obsolete |
Key Features
- Real-time clock functionality counting seconds through years in BCD format.
- Integrated battery and crystal for continuous operation.
- On-chip battery-backup switch to maintain time during power outages.
- Compatible with CMOS, TTL, and MOS logic.
- Operates at frequencies of 3MHz and beyond.
Applications
The BQ4847YMT was suitable for a variety of applications requiring accurate timekeeping, such as:
- Embedded systems.
- Industrial control systems.
- Consumer electronics.
- Automotive systems.
- Medical devices.
Q & A
- What is the BQ4847YMT?
The BQ4847YMT is a real-time clock integrated circuit produced by Texas Instruments.
- Is the BQ4847YMT still in production?
No, the BQ4847YMT is obsolete and no longer manufactured.
- What is the counting format of the BQ4847YMT?
The BQ4847YMT counts time in BCD (Binary Coded Decimal) format.
- Does the BQ4847YMT have battery backup?
Yes, it includes an on-chip battery-backup switch.
- What logic types is the BQ4847YMT compatible with?
The BQ4847YMT is compatible with CMOS, TTL, and MOS logic.
- At what frequencies can the BQ4847YMT operate?
The BQ4847YMT can operate at frequencies of 3MHz and beyond.
- What are some common applications for the BQ4847YMT?
Common applications include embedded systems, industrial control systems, consumer electronics, automotive systems, and medical devices.
- Are there any substitutes available for the BQ4847YMT?
Yes, substitutes like the DS12885+ from Analog Devices Inc./Maxim Integrated are available.
- Where can I find detailed specifications for the BQ4847YMT?
Detailed specifications can be found in the datasheet available from sources like Digi-Key, Mouser, and the official Texas Instruments website.
- Why is the BQ4847YMT no longer manufactured?
The reason for its obsolescence is not specified, but it is common for components to be discontinued due to advancements in technology or market demand.
