ATMEL 138 24C16AN PU27 D -IC

The ATMEL 138 24C16AN PU27 D is a serial Electrically Erasable Programmable Read-Only Memory (EEPROM) integrated circuit (IC) manufactured by Atmel (now part of Microchip Technology). Below is a detailed description of its key features and specifications:

Key Features:

• Model: AT24C16AN
• Manufacturer: Atmel (Microchip)
• Package: PDIP-8 (PU27 D indicates the package type and possibly the date/batch code)
• Memory Capacity: 16 Kbit (2 KB) organized as 2048 x 8 bits
• Interface: I²C (Two-Wire Serial Interface)
• Operating Voltage: 1.8V to 5.5V (wide voltage range for compatibility)
• Write Cycle Endurance: 1,000,000 cycles
• Data Retention: 100 years
• Speed:
  • 400 kHz (Standard Mode)
  • 1 MHz (Fast Mode)
• Page Write Buffer: 16 bytes
• Hardware Write Protection: Enable/disable via WP pin
• Operating Temperature Range: -40°C to +85°C (industrial-grade)

Applications:

• Data storage in embedded systems
• Configuration storage in consumer electronics
• Automotive systems (non-critical)
• Industrial control systems
• Smart meters & IoT devices

Package & Pinout (PDIP-8):

1. A0 – Chip Address Input
2. A1 – Chip Address Input
3. A2 – Chip Address Input
4. VSS (GND) – Ground
5. SDA – Serial Data (I²C)
6. SCL – Serial Clock (I²C)
7. WP – Write Protect (High = Protect, Low = Write Enabled)
8. VCC – Power Supply (1.8V–5.5V)

Notes:

• The “PU27 D” suffix likely refers to the package type (PU = PDIP) and manufacturing details.
• Compatible with other 24C16 EEPROMs from different manufacturers.
• Supports sequential read for faster data access.

This EEPROM is widely used for non-volatile data storage in various electronic systems due to its reliability, low power consumption, and ease of integration with I²C-based designs.