• ARM Cortex-M4 running at up to 120MHz
• Memory Protection Unit (MPU)
• DSP Instruction
• Thumb®-2 instruction set
• Instruction and Data Cache Controller with 2 Kbytes Cache Memory
• 512Kbytes of flash, 128Kbytes of SRAM, 8Kbytes of ROM
• ARM Cortex-M4F
• IEEE 754 Compliant, Single precision Floating-Point Unit (FPU)
• DSP Instruction
• Thumb-2 instruction set
• Instruction and Data Cache Controller with 2 Kbytes Cache Memory
• 16K+8K bytes of SRAM
• Interrupt-based Inter-processor Communication
• Asynchronous Clocking
• One Interrupt Controller (NVIC) for each core
• Each Peripheral IRQs routed to each NVIC Inputs
• High performance AES 128 to 256 with various modes (GCM, CBC, ECB, CFB, CBC-MAC, CTR)
• TRNG (up to 38 Mbit/s stream, with tested Diehard and FIPS)
• Public Key Crypto accelerator and associated ROM library for RSA, ECC, DSA, ECDSA
• Integrity Check Module (ICM) based on Secure Hash Algorithm (SHA1, SHA224, SHA256), DMA assisted
• Up to four physical Anti-tamper Detection I/Os with Time Stamping and Immediate Clear of General Backup Registers
• Security Bit for Device Protection from JTAG Accesses
• Embedded Core and LCD Voltage Regulator for single supply operation
• Power-on-Reset (POR), Brownout Detector (BOD) and Dual Watchdog for safe operation
• Ultra-low-power Backup mode (< 0.5 µA Typical @ 25ºC)
• Optional 3 to 20 MHz quartz or ceramic resonator oscillators with clock failure detection
• Ultra-low-power 32.768 kHz crystal oscillator for RTC with frequency monitoring
• High-precision 4/8/12 MHz factory-trimmed internal RC oscillator with on-the-fly trimming capability
• One high-frequency PLL up to 240 MHz, one 8 MHz PLL with internal 32 kHz input
• Low-power slow clock internal RC oscillator as permanent clock
• Ultra-low-power RTC with Gregorian and Persian Calendar, Waveform Generation and Clock Calibration
• Up to 23 Peripheral DMA (PDC) Channels
• Display capacity of 50 segments and 6 common terminals
• Software-selectable LCD output voltage (Contrast)
• Can be used in Backup mode
• Up to five USARTs with ISO7816, IrDA®, RS-485, SPI and Manchester Mode
• Two 2-wire UARTs
• Two 400 kHz Master/Slave and Multi-Master Two-wire Interfaces (I2C compatible)
• Up to seven Serial Peripheral Interfaces (SPI)
• Two 3-channel 16-bit Timer/Counters with Capture, Waveform, Compare and PWM modes
• Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for Stepper Motor
• 4-channel 16-bit Pulse Width Modulator
• 32-bit Real-time Timer
• 8-channel, 500 kS/s, Low-power, 10-bit SAR ADC with Digital averager providing 12-bit resolution at 30 kS/s
• Software Controlled On-chip Reference ranging from 1.6V to 3.4V
• Temperature Sensor and Backup Battery Voltage Measurement Channel
• Up to 74 I/O lines with External Interrupt Capability (edge or level sensitivity), Schmitt Trigger, Internal Pull-up/pull-down, Debouncing, Glitch Filtering and On-die Series Resistor Termination
• 100-lead LQFP, 14 x 14 mm, pitch 0.5 mm

The Microchip's SAM4C8 microcontroller is a system-on-chip solution for smart energy applications built around two high performance 32-bit ARM® Cortex®-M4 RISC processors. These devices operate at a maximum speed of 120 MHz and feature 512 Kbytes of embedded Flash, 152 Kbytes of SRAM and on-chip cache for each core. The dual ARM® Cortex®-M4 architecture allows for integration of application layer, communications layers and security functions in a single device, with the ability to extend program and data memory via a 16-bit external bus interface.