ATTINY321X

Part: ATtiny3216/3217 Automotive (Microchip)

Type: AVR Microcontroller

Description: The ATtiny3216/3217 Automotive are tinyAVR 1-series microcontrollers featuring an AVR® CPU with hardware multiplier, running at up to 16 MHz, with 32 KB Flash, 2 KB SRAM, and 256 bytes EEPROM, available in 20- or 24-pin packages.

Operating Conditions:

• Supply voltage: 2.7–5.5 V (for 0-8 MHz operation); 4.5–5.5 V (for 0-16 MHz operation)
• Operating temperature: -40 to +125 °C
• Max CPU frequency: 16 MHz

Absolute Maximum Ratings:

• Max continuous current: Not applicable

Key Specs:

• CPU: AVR® CPU with two-cycle hardware multiplier
• Flash memory: 32 KB In-system self-programmable
• SRAM: 2 KB
• EEPROM: 256 bytes
• ADC: Two 10-bit 115 ksps Analog-to-Digital Converters
• DAC: Three 8-bit Digital-to-Analog Converters
• Digital Interfaces: One USART, one master/slave SPI, one TWI (I2C compatible)
• I/O lines: Up to 22 programmable I/O lines

Features:

• Event System for CPU independent inter-peripheral signaling
• Core Independent Peripherals (CIPs)
• Peripheral Touch Controller (PTC) with Driven Shield+ and Boost Mode
• Configurable Custom Logic (CCL) with two programmable look-up tables
• Single-Pin Unified Program and Debug Interface (UPDI)
• Three sleep modes: Idle, Standby, Power-Down

Applications:

• Automotive applications

Package:

• 20-pin SOIC300
• 24-pin VQFN 4x4 mm with wettable flanks

• CPU

  • AVR® CPU
  • Running at up to 16 MHz
  • Single-cycle I/O access
  • Two-level interrupt controller
  • Two-cycle hardware multiplier

• Memories

  • 32 KB In-system self-programmable Flash memory
  • 256 bytes EEPROM
  • 2 KB SRAM
  • Write/erase endurance:
    • Flash 10,000 cycles
    • EEPROM 100,000 cycles
  • Data retention:
    • 40 years at 55°C

• System

  • Power-on Reset (POR)
  • Brown-out Detector (BOD)
  • Clock options:
    • 16 MHz low-power internal RC oscillator
    • 32.768 kHz Ultra Low-Power (ULP) internal RC oscillator
    • 32.768 kHz external crystal oscillator
    • External clock input
  • Single-Pin Unified Program and Debug Interface (UPDI)
  • Three sleep modes:
    • Idle with all peripherals running for immediate wake-up
    • Standby

• Configurable operation of selected peripherals

  • Power-Down with full data retention

• Peripherals

• One 16-bit Timer/Counter type A (TCA) with a dedicated period register and three compare channels

• Two 16-bit Timer/Counter type B (TCB) with input capture

• One 12-bit Timer/Counter type D (TCD) optimized for control applications

• One 16-bit Real-Time Counter (RTC) running from an external crystal, external clock, or internal RC oscillator

• Watchdog Timer (WDT) with Window mode, with a separate on-chip oscillator

• One USART with fractional baud rate generator, auto-baud, and start-of-frame detection

• One master/slave Serial Peripheral Interface (SPI)

• One Two-Wire Interface (TWI) with dual address match

  • Philips I2C compatible
  • Standard mode (Sm, 100 kHz)
  • Fast mode (Fm, 400 kHz)
  • Fast mode plus (Fm+, 1 MHz)

• Three Analog Comparators (AC) with a low propagation delay

• Two 10-bit 115 ksps Analog-to-Digital Converters (ADCs)

• Three 8-bit Digital-to-Analog Converters (DACs) with one external channel

• Multiple voltage references (VREF):

  • 0.55V
  • 1.1V
  • 1.5V
  • 2.5V
  • 4.3V

• Event System (EVSYS) for CPU independent and predictable inter-peripheral signaling

• Configurable Custom Logic (CCL) with two programmable look-up tables

• Automated CRC memory scan

• Peripheral Touch Controller (PTC)

  • Capacitive touch buttons, sliders, wheels and 2D surfaces
  • Wake-up on touch
  • Driven shield for improved moisture and noise handling performance
  • Up to 14 self-capacitance channels
  • Up to 49 mutual capacitance channels

• External interrupt on all general purpose pins

• I/O and Packages:

  • Up to 22 programmable I/O lines
  • 20-pin SOIC300
  • 24-pin VQFN 4x4 mm with wettable flanks

• Temperature Ranges:

  • -40°C to 105°C
  • -40°C to 125°C

• Speed Grades:

  • 0-8 MHz @ 2.7V 5.5V
  • 0-16 MHz @ 4.5V 5.5V

This bit field selects the Reset/UPDI pin configuration.

Note: When configuring the RESET pin as GPIO, there is a potential conflict between the GPIO actively driving the output, and a high-voltage UPDI enable sequence initiation. To avoid this, the GPIO output driver is disabled for 768 OSC32K cycles after a System Reset. Enable any interrupts for this pin only after this period.