AT89C5122 Overview
AT8xC5122 is a high-performance CMOS derivative of the 80C51 8-bit microcontrollers optimized for USB keyboard with smart card reader applications.
AT89C5122 Key Features
- 80C51 Core
- 6 Clocks per Instruction
- Certified According to ISO7816, EMV2000, GIE-CB and WHQM Standards
- Asynchronous Protocols T = 0 and T = 1, with Direct and Inverse Modes
- Step-up/Down Converter with Programmable Voltage Output: 5V and 3V (60 mA), 1.8V (20 mA)
- 30 mA Maximum Operating Current (at 32 MHz X1)
- 100 µA Maximum Power-down Current at 5.4V (without Smart Card and USB) Voltage Range: 3.6 to 5.5V
- For AT8xC5122 version
- For AT8xC5123 version
- Four LED Outputs with Programmable Current Sources: 2-4-10 mA