AVR64EA28-I/STX

The AVR64EA28/32/48 microcontrollers of the AVR EA Family are using the AVR CPU with hardware multiplier running at clock speeds up to 20 MHz. They come with 64 KB of Flash, 6 KB of SRAM, and 512 bytes of EEPROM. The microcontrollers are available in 28-, 32- and 48- pin packages. The AVR EA Family uses the latest technologies from Microchip with a flexible and low-power architecture, including Event System, accurate analog subsystems, and advanced digital peripherals.

Key features

• AVR CPU:
• Running at up to 20 MHz
• Single-cycle I/O register access
• Two-level interrupt controller
• Two-cycle hardware multiplier
• Supply voltage range: 1.8 - 5.5V
• Memories:
• 64 KB In-system-programmable Flash memory with a true read-while-write operation
• 6 KB SRAM
• 512 EEPROM
• 64B of user row in nonvolatile memory that can keep data during chip-erase and be programmed while the device is locked
• Write/erase endurance:
• Flash: 10,000 cycles
• EEPROM: 100,000 cycles
• Data retention: 40 Years at 55℃
• Power-on Reset (POR) circuit
• Brown-out Detector (BOD) with user-programmable levels
• Voltage Level Monitor (VLM) with interrupt at a programmable level above the BOD level
• Clock Failure Detection (CFD)
• Clock options:
• High-precision internal oscillator with selectable frequency up to 20 MHz (OSCHF)
• Auto-tuning for improved internal oscillator accuracy
• Internal ultra-low power 32.768 kHz oscillator (OSC32K)
• External 32.768 kHz crystal oscillator (XOSC32K)
• External clock input
• External high-frequency crystal oscillator with clock failure detection (XOSCHF)
• Single pin Unified Program and Debug Interface (UPDI)
• Three sleep modes:
• Idle with all peripherals running for immediate wake-up
• Standby with a configurable operation of selected peripherals
• Power-Down with full data retention
• Peripherals:
• Two 16-bit Timer/Counters type A (TCA) with three compare channels for PWM and waveform generation
• Four 16-bit Timer/Counters type B (TCB) with input capture for capture and signal measurements
• One 16-bit Real-Time Counter (RTC) that can run from an external crystal or internal oscillator
• Three USARTs with fractional baud rate generator, auto-baud, and start-of-frame detection
• One host/client Serial Peripheral Interface (SPI)
• Independent host and client operation (Dual mode)
• Philips I²C compatible
• Standard-mode (Sm, 100 kHz)
• Fast-mode (Fm, 400 kHz)
• Fast-mode Plus (Fm+, 1 MHz)
• Event System for CPU-independent and predictable inter-peripheral signaling
• Configurable Custom Logic (CCL) with up to four programmable Look-up Tables (LUTs)
• One 12-bit, 375 ksps, differential Analog-to-Digital Converter (ADC)
• Includes a Programmable Gain Amplifier (PGA), 1x to 16x gain on the input signal
• One 10-bit Digital-to-Analog Converter (DAC)
• Two Analog Comparators (ACs) with window compare functions
• Multiple voltage references (VREF):
• 1.024V
• 2.048V
• 2.500V
• 4.096V
• VREFA
• VDD
• Automated Cyclic Redundancy Check (CRC) Flash program memory scan
• Watchdog Timer (WDT) with Window mode and separate on-chip oscillator
• External interrupt on all general purpose pins
• I/O and Packages:
• 24 to 42 programmable I/O pins
• 28-pin VQFN 4x4, SPDIP and SSOP
• 32-pin VQFN 5x5 and TQFP 7x7
• 48-pin VQFN 6x6 and TQFP 7x7
• Temperature Ranges:
• Industrial: -40℃ to 85℃ ambient
• Extended: -40℃ to 125℃ ambient