256 KBIT (32KB X8) TIMEKEEPER SRAM The **M48T35AV-10PC1** is a timekeeping RAM (TKRAM) device manufactured by **STMicroelectronics**. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Manufacturer Specifications:**
1. **Type**: Non-volatile SRAM (NVSRAM) with a built-in real-time clock (RTC).
2. **Density**: 32K x 8 (256 Kbit).
3. **Access Time**: 100 ns (indicated by the "-10" in the part number).
4. **Supply Voltage**: 4.5V to 5.5V.
5. **Operating Temperature Range**:
- Commercial: **0°C to +70°C**.
- Industrial: **-40°C to +85°C** (varies by suffix).
6. **Package**: **28-pin DIP (Dual In-line Package)**.
7. **Battery Backup**: Integrated lithium energy source for data retention.
8. **Data Retention**: **Minimum 10 years** in the absence of power.
9. **Clock Accuracy**: ±1 minute per month at 25°C.
### **Descriptions:**
- Combines a **static RAM** with a **real-time clock/calendar** and an **integrated battery**.
- Designed for applications requiring **non-volatile memory with timekeeping functionality**, such as industrial controls, medical devices, and embedded systems.
- The **M48T35AV-10PC1** is a **5V** device with a **100 ns access time**.
### **Features:**
1. **Non-Volatile SRAM**: Retains data without external power.
2. **Real-Time Clock (RTC)**: Provides seconds, minutes, hours, day, date, month, and year (including leap year correction).
3. **Battery Backup**: Built-in lithium cell ensures data retention.
4. **Low Power Consumption**: Optimized for battery-backed applications.
5. **Automatic Power-Fail Protection**: Switches to battery power when VCC fails.
6. **Industrial-Grade Options**: Available for extended temperature ranges.
7. **Standard JEDEC Pinout**: Compatible with existing SRAM designs.
This information is strictly based on manufacturer datasheets and technical documentation.
