64 Kbit 8Kb x 8 TIMEKEEPER SRAM The **M48T18-100MH1** is a Timekeeping RAM (TKRAM) device manufactured by **STMicroelectronics (STM)**. Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Part Number:** M48T18-100MH1
- **Manufacturer:** STMicroelectronics (STM)
- **Type:** Timekeeping RAM (TKRAM)
- **Memory Size:** 16 Kb (2 KB)
- **Organization:** 2K x 8
- **Supply Voltage:** 4.5V to 5.5V
- **Access Time:** 100 ns
- **Operating Temperature Range:** 0°C to +70°C
- **Package:** 28-pin DIP (Dual In-line Package)
- **Battery Backup:** Integrated lithium energy source
- **Data Retention:** Minimum 10 years in the absence of power
### **Descriptions:**
- The **M48T18-100MH1** is a non-volatile static RAM (NVSRAM) with an integrated real-time clock (RTC).
- It combines a **2 KB SRAM** with a **timekeeping circuit**, ensuring data retention during power loss.
- The device includes a **lithium energy source** for backup, eliminating the need for an external battery.
- It is commonly used in applications requiring **timekeeping and data storage**, such as industrial systems, embedded controllers, and legacy computing.
### **Features:**
- **Integrated Real-Time Clock (RTC):**
- Tracks **seconds, minutes, hours, day, date, month, and year** (including leap year correction).
- **Binary or BCD** time/date representation.
- **Non-Volatile SRAM:**
- **2 KB (2K x 8) SRAM** with battery backup.
- **Automatic Power-Fail Protection:**
- Switches to battery backup when primary power is lost.
- **Low Power Consumption:**
- **Standby current:** Typically **1 µA** in battery mode.
- **Industrial Temperature Range:**
- Supports **0°C to +70°C** operation.
- **28-Pin DIP Package:**
- Easy integration in through-hole PCB designs.
This information is strictly based on the manufacturer's datasheet and technical documentation. No additional guidance or suggestions are provided.
