ST19WR66 is a dual contactless smartcard MCU produced by ST company, with MAP, RF UART, IART and 66 Kbytes high density EEPROM features
The ST19WR66 is a dual contactless smartcard microcontroller (MCU) designed for cost-effective secure portable applications. It features an enhanced 8-bit CPU with extended addressing modes and includes on-chip memories such as 224 Kbytes of User ROM, 6 Kbytes of User RAM, and 66 Kbytes of User EEPROM. The device incorporates advanced security features including hardware firewalls for memory protection, a modular arithmetic processor (MAP), and an enhanced DES accelerator.
| User EEPROM Capacity | 66 Kbytes |
|---|---|
| User ROM Capacity | 224 Kbytes |
| User RAM Capacity | 6 Kbytes |
| Supply Voltage | 1.62 V to 5.5 V |
| External Clock Frequency | Up to 8.5 MHz |
| Carrier Frequency | 13.56 MHz |
| Data Transfer Rate | Up to 848 Kbits/s |
| RF Frame Size | Up to 256 Bytes |
The EEPROM offers 10 year data retention.
The device supports an external clock frequency of up to 8.5 MHz.
The chip operates with a supply voltage between 1.62 V and 5.5 V.
The RF UART enables high-speed data transfer up to 848 kbits/s.