CAST, Inc. T8051XC3

The CAST, Inc. T8051XC3 is an Ultra-Small 8051-Compatible Microcontroller IP Core The MCU executes some 8051 in-structions in a single clock cycle. Interfaces and Peripherals - Special Function Registers interface - Up to 256 Bytes of internal data memory interface - External memory Interface - Up to 64KB external program memory - Up to 64KB external data memory - Interrupt Controller with two or four priority levels, and eight interrupt sources - 8-bit Parallel I/O Port - Serial 0 full-duplex serial (UART) interface - Timer 1: Flexible timer/counter - On-Chip Debug Support (OCDS) - Power Management Unit with power-down modes (IDLE/STOP) - Other peripherals and exten-sions available upon request - JTAG-based or Single-Wire Serial Debug.