MICROCHIP ATSAM4C32CA-AUTR

The Microchip SAM4C microcontrollers are system-on-chip solutions 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 up to 2 Mbytes of embedded Flash, up to 304 Kbytes of SRAM and on-chip cache for each core. The dual ARM Cortex-M4 architecture allows for integration of an 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. The peripheral set includes advanced cryptographic engine, anti-tamper, floating point unit (FPU), USB Full-speed Host/ Device port, five USARTs, two UARTs, two TWIs, up to seven SPIs, as well as a PWM timer, two 3-channel generalpurpose 16-bit timers, calibrated low-power RTC running on the backup domain down to 0.5 μA, and a 50x6 segmented LCD controller. The SAM4C series is a scalable platform providing, alongside Microchip’s industry leading SAM4 standard microcontrollers, unprecedented cost structure, performance and flexibility to smart meter designers worldwide.

• Application/Master Core
  • ARM Cortex-M4 running at up to 120 MHz
  • Memory Protection Unit (MPU)
  • DSP Instruction
  • Thumb-2 instruction set
  • Instruction and Data Cache Controller with 2 Kbytes Cache Memory
• Coprocessor (provides ability to separate application, communication or metrology functions)
  • ARM Cortex-M4F running at up to 120 MHz
  • IEEE 754 Compliant, Single-precision Floating-Point Unit (FPU)
  • DSP Instruction
  • Thumb-2 instruction set
  • Instruction and Data Cache Controller with 2 Kbytes of Cache Memory
  • Memories
    • Up to 32 Kbytes of Embedded SRAM (SRAM1) for Program Code (I-Code bus) and Program Data (D-Code bus and System bus)
    • Up to 16 Kbytes of Embedded SRAM (SRAM2) for Program Data (System bus)
• Interrupt-based Interprocessor Communication
  • Asynchronous Clocking
  • One Interrupt Controller (NVIC) for each core
  • Each Peripheral IRQ routed to each NVIC Input
• 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
• Safety
  • 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
• Shared System Controller
  • Power Supply
    • 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 @25°C)
  • 3 to 20 MHz oscillator supporting crystal, ceramic resonator or external clock signal. Also supports clock failure detection
  • Ultra-low power 32.768 kHz oscillator supporting crystal or external clock signal and 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, as source for high-frequency PLL
  • Low-power slow clock internal RC oscillator as permanent clock
  • Ultra-low-power RTC with Gregorian and Persian Calendar, Waveform Generation in Backup mode and Clock Calibration Circuitry for 32.768 kHz Crystal Frequency Compensation Circuitry
  • Up to 23 Peripheral DMA (PDC) Channels
• Shared Peripherals
  • One Low-power Segmented LCD Controller
    • Display capacity of 50 segments and 6 common terminals
    • Software-selectable LCD output voltage (Contrast)
    • Low current consumption in Low-power mode
    • Can be used in Backup mode
  • Up to five USARTs with ISO7816, RS-485, SPI and Manchester Mode
  • Two 2-wire UARTs with one UART (UART1) supporting optical transceiver providing an electrically isolated serial communication with hand-held equipment, such as calibrators, compliant with ANSI-C12.18 or IEC62056-21 norms
  • Full-speed USB Host and Device Port (available only for SAM4C32E in a 144-pin package)
  • Up to two 400 kHz Master/Slave and Multi-Master Two-wire Interfaces
  • 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
• Analog Conversion Block
  • 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
• Debug
  • Star Topology AHB-AP Debug Access Port Implementation with Common SW-DP / SWJ-DP Providing Higher Performance than Daisy-chain Topology
  • Debug Synchronization between both Cores (cross triggering to/from each core for Halt and Run Mode)
• I/O
  • Up to 106 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