This document mainly introduces the main features of ST19NA18 microcontroller, including CPU, RAM, ROM, EEPROM, security features, etc.
The ST19NA18 is a serial access microcontroller designed for cost-effective secure portable applications such as Pay TV, banking, and secure systems. It utilizes advanced CMOS EEPROM technology and includes on-chip memories (User ROM, RAM, and EEPROM) with customizable partitions and hardware security firewalls to protect data integrity.
The device features an enhanced 8-bit CPU capable of high-speed operation up to 28 MHz. Key security components include a Hardware Security Enhanced DES accelerator supporting symmetrical algorithms like DES and Triple DES, and a Modular Arithmetic Processor (MAP) for public key cryptography operations such as RSA signatures.
| CPU Type | Enhanced 8-bit CPU |
|---|---|
| User ROM Size | 128 Kbytes |
| User RAM Size | 4 Kbytes |
| User EEPROM Size | 18 Kbytes |
| OTP Memory | 64 Bytes User + 64 Bytes ST OTP |
| Max Clock Frequency | 28 MHz |
| Supply Voltage Ranges | 3V and 5V |
| Data Retention | 10-year |
| Endurance | 500,000 cycles |
| Erase Time (1-64 Bytes) | 1.5 ms |
The device is intended for Pay TV, Banking, and Secure applications.
Yes, it includes a Modular Arithmetic Processor (MAP) that supports RSA 1024-bit and 2048-bit signatures.
The internal clock frequency can reach up to 28 MHz.