Overview
The M48T02-200PC1, produced by STMicroelectronics, is a 2 Kb x 8 non-volatile static RAM and real-time clock integrated circuit. This device is pin and function compatible with the DS1642 and is housed in a special 24-pin, 600 mil DIP CAPHAT™ package. The package includes a quartz crystal and a long-life lithium button cell, providing a highly integrated battery-backed memory and real-time clock solution. The M48T02-200PC1 is designed to maintain data and clock functionality for at least 10 years in the absence of power over the operating temperature range.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Memory Size | 2 Kb x 8 | 16 Kbit |
| Supply Voltage (VCC) | 4.75 to 5.5 V | |
| Power-Fail Deselect Voltage (VPFD) | 4.5 V ≤ VPFD ≤ 4.75 V | |
| Clock Accuracy | Typical ±1 minute a month at 25 °C | |
| Package Type | 24-pin, 600 mil DIP CAPHAT™ | |
| Operating Temperature | 0 to 70 °C | |
| Data Retention | At least 10 years | |
| Compatibility | Pin and function compatible with JEDEC standard 2 Kb x 8 SRAMs and DS1642 |
Key Features
- Integrated ultra-low power SRAM, real-time clock, and power-fail control circuit.
- BYTEWIDE™ RAM-like clock access.
- BCD coded year, month, day, date, hours, minutes, and seconds.
- Software controlled clock calibration for high accuracy applications.
- Automatic power-fail chip deselect and WRITE protection.
- Self-contained battery and crystal in the CAPHAT™ DIP package.
- RoHS compliant – Lead-free second level interconnect.
- Automatic corrections for 28, 29 (leap year - valid until 2100), 30, and 31 day months.
Applications
- Embedded systems requiring non-volatile memory and real-time clock functionality.
- Industrial control systems.
- Medical devices.
- Aerospace and defense applications.
- Any system needing reliable, long-term data storage and timekeeping.
Q & A
- What is the memory size of the M48T02-200PC1?
The M48T02-200PC1 has a memory size of 2 Kb x 8, which is equivalent to 16 Kbit.
- What is the supply voltage range for the M48T02-200PC1?
The supply voltage range is 4.75 to 5.5 V.
- How accurate is the real-time clock in the M48T02-200PC1?
The typical clock accuracy is ±1 minute a month at 25 °C.
- What type of package does the M48T02-200PC1 come in?
The M48T02-200PC1 is housed in a 24-pin, 600 mil DIP CAPHAT™ package.
- How long does the battery in the M48T02-200PC1 last?
The battery has sufficient capacity to maintain data and clock functionality for at least 10 years in the absence of power.
- Is the M48T02-200PC1 compatible with other SRAMs?
Yes, it is pin and function compatible with JEDEC standard 2 Kb x 8 SRAMs and the DS1642.
- What is the operating temperature range of the M48T02-200PC1?
The operating temperature range is 0 to 70 °C.
- Does the M48T02-200PC1 have automatic power-fail protection?
Yes, it has automatic power-fail chip deselect and WRITE protection.
- How does the clock calibration work in the M48T02-200PC1?
The clock calibration is software controlled, allowing for high accuracy applications.
- Is the M48T02-200PC1 RoHS compliant?
Yes, it is RoHS compliant with lead-free second level interconnect.
