EFM32™ PG28 32-bit Microcontrollers (MCUs)

Low Power System-on-Chip

• High Performance 32-bit 80 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
• Up to 1024 kB flash program memory
• Up to 256 kB RAM data memory

Low Energy Consumption

• 26 μA/MHz in Active Mode (EM0) at 80 MHz
• 2.6 μA EM2 DeepSleep current (256 kB RAM retention and RTC running from LFXO)
• 1.1 μA EM2 DeepSleep current (16 kB RAM retention and RTC running from LFXO)

Wide Selection of MCU peripherals

• Analog to Digital Converter (IADC) with flexible performance
  • 12, 16, or 20-bit output
  • High speed Mode* up to 16-bits ENOB at 3.8 ksps
• 2 × Analog Comparator (ACMP)
• 2-Channel Digital to Analog Converter (VDAC)
• Low-Energy Sensor Interface (LESENSE)
• Up to 51 General Purpose I/O pins with output state retention and asynchronous interrupts
• 8 Channel DMA Controller
• 12 Channel Peripheral Reflex System (PRS)
• 4 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels
• 1 × 32-bit Timer/Counter with 3 Compare/Capture/PWM channels
• 32-bit Real Time Counter
• 24-bit Low Energy Timer for waveform generation
• 16-bit Pulse Counter with asynchronous operation (PCNT)
• 2 × Watchdog Timer
• 3 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART)
• 1 x Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
• 2 × I2C interface with SMBus support
• Integrated Low-Energy LCD Controller supporting up to 192 segments
• Keypad scanner supporting up to 6 x 8 matrix (KEYSCAN)
• Die temperature sensor with ± 1.5 °C accuracy across temperature range

*IADC High Speed and High Accuracy modes available only on select part numbers. All devices support "Normal" operation mode with speeds up to 1 Msps.

Wide Operating Range

• 1.71 to 3.8 V single power supply
• -40 °C to +125 °C

Packages

• QFN68 8 mm x 8 mm x 0.85 mm

Secure Vault™

• Hardware Cryptographic Acceleration for AES128/192/256, ChaCha20-Poly1305, SHA-1, SHA-2/256/384/512, ECDSA +ECDH(P-192, P-256, P-384, P-521), Ed25519 and Curve25519, J-PAKE, PBKDF2
  
• True Random Number Generator (TRNG) 
• ARM® TrustZone®
• Secure Boot with (Root of Trust and Secure Loader (RTSL)
• Secure Debug Unlock
• DPA Countermeasures
• Secure Key Management with PUF
• Anti-Tamper
• Secure Attestation