System Overview
C8051F326/7 devices are fully integrated mixed-signal system-on-a-chip MCUs. Highlighted features are listed below. Refer to Table 1.1 for specific product feature selection.

• High-speed pipelined 8051-compatible microcontroller core (up to 25 MIPS)
• In-system, full-speed, non-intrusive debug interface (on-chip)
• Universal serial bus (USB) function controller with three fixed-function endpoint pipes, integrated transceiver, and 256B FIFO RAM
• Supply voltage regulator
• Precision programmable 12 MHz internal oscillator and 4x clock multiplier
• 16k kB of on-chip Flash memory
• 1536 total bytes of on-chip RAM (256 + 1 k + 256 USB FIFO)
• Enhanced UART, serial interfaces implemented in hardware
• Two general-purpose 16-bit timers
• On-chip power-on reset, VDD monitor, and missing clock detector
• 15 Port I/O (5 V tolerant)