N21C21A, 1 Kb 1-wire EPROM add-only memory
The N21C21A is a 1K−bit serial EPROM containing a factory−programmed, unique 48−bit identification number, 8−bit CRCgeneration, and the 8−bit family code (09h).
A 64−bit status register controls write protection and page redirection. The N21C21A 1−wire interface requires only a single connection and a ground return. The DATA pin is also the sole power source for the N21C21A. The small surface−mount package options saves printed−circuit−board space, while the low cost makes it ideal for applications such as battery pack configuration parameters, record maintenance, asset tracking, product−revision status, and access−code security.
- Power Supply
- Medical Probes
- One time use devices
Features
- 1024 Bits of One−Time Programmable (OTP) EPROM
- Factory−Programmed Unique 64−Bit Identification Number
- Single−Wire Interface
- Synchronous Communication
- Internal Capacitor stores energy during communication
Applications
- Security Encoding
- Inventory Tracking
- Product−Revision Maintenance
- Battery−Pack Identification
Benefits
- Storage Of User−Programmable Configuration Data
- Security
- Reduces Circuit Board Routing
- Reduces Host Interrupt Overhead
- No Standby Power Required"
