89C5122
Description
AT8xC5122 is a high-performance CMOS derivative of the 80C51 8-bit microcontrollers optimized for USB keyboard with smart card reader applications. AT8xC5122 retains the features of the Atmel 80C51 with 32 Kbytes ROM capacity, 768 bytes of internal RAM, a 4-level interrupt system, two 16-bit timer/counters (T0/T1), a full duplex enhanced UART (EUART) with baud rate generator (BRG) and an on-chip oscillator.
Key Features
- 80C51 Core : - 6 Clocks per Instruction - Speed up to 16 MHz
- 768 Bytes RAM
- AT83C5122: 32 Kbytes ROM
- AT83C5123: 30 Kbytes ROM
- AT85C5122: 32 Kbytes Code RAM and 32 Kbytes ROM
- AT89C5122 : 32 Kbytes Flash
- AT85EC5122, AT83EC5123, AT83EC5122: Additional 512 Bytes EEPROM (AT24C04)
- Multi-protocol Smart Card Interface - 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) - 4 kV ESD Protection (MIL/STD 833 Class 3)
- Alternate Card Support with CLK, IO and RST
- UART with Integrated Baud Rate Generator (BRG)
