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Microcontroller. ATSAML22N16A-AUT Datasheet |
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SMART ARM-based Microcontrollers
SAM L22G / L22J / L22N
DATASHEET COMPLETE
Introduction
Atmel® | SMART SAM L22 is a series of Ultra low-power segment LCD
microcontrollers using the 32-bit ARM® Cortex®-M0+ processor, ranging from
48- to 100-pins with up to 256KB Flash and 32KB of SRAM and to drive up
to 320 LCD segments. The SAM L22 devices operate at a maximum
frequency of 32MHz and reach 2.46 CoreMark®/MHz. With sophisticated
power management technologies the SAM L22 devices run down to
39µA/MHz (CPU running CoreMark) in active mode and down to 490nA in
ultra low-power backup mode with RTC.
Features
• Processor
– ARM Cortex-M0+ CPU running at up to 32MHz
• Single-cycle hardware multiplier
• Micro Trace Buffer
• Memory Protection Unit (MPU)
• Memories
– 64/128/256KB in-system self-programmable Flash
– 2/4/8KB Flash Read-While-Write section
– 8/16/32KB SRAM Main Memory
• System
– Power-on reset (POR) and programmable brown-out detection
(BOD)
– Internal and external clock options
– External Interrupt Controller (EIC)
• 16 external interrupts that can use any I/O-Pin
• One non-maskable interrupt on one I/O-Pin
– Two-pin Serial Wire Debug (SWD)
• Low Power
– Idle, Standby, Backup, and Off sleep modes
– SleepWalking peripherals
Atmel-42402E-SAM L22G / L22J / L22N_Datasheet_Complete-07/2016
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– Battery backup support
– Two runtime selectable power/performance levels
– Embedded Buck/LDO regulator supporting on-the-fly selection
– Active mode: <50µA/MHz
– Standby with full retention, RTC and LCD = 3.47µA
• 2.1µs wake-up time
– Standby with full retention and RTC: 1.87µA
• 2.1µs wake-up time
– Ultra low power Backup mode with RTC: 490nA
• 90µs wake-up time
• Peripherals
– Segment LCD controller
• Up to 8 (4) common and 40 (44) segment terminals to drive 320 (176) segments
• Static, ½, 1/3, ¼ bias
• Internal charge pump able to generate VLCD higher than VDDIO
– 16-channel Direct Memory Access Controller (DMAC)
– 8-channel Event System
– Up to four 16-bit Timer/Counters (TC), each configurable as:
• 16-bit TC with two compare/capture channels
• 8-bit TC with two compare/capture channels
• 32-bit TC with two compare/capture channels, by using two TCs
– One 24-bit Timer/Counters for Control (TCC), with extended functions:
• Four compare channels with optional complementary output
• Generation of synchronized pulse width modulation (PWM) pattern across port pins
• Deterministic fault protection, fast decay and configurable dead-time between
complementary output
• Dithering that increase resolution with up to 5 bit and reduce quantization error
– Frequency Meter
– 32-bit Real Time Counter (RTC) with clock/calendar function
• 8x32-bit Backup Register
• Tamper Detection
– Watchdog Timer (WDT)
– CRC-32 generator
– One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 Device
• Eight endpoints
• Crystal less operation
– Up to six Serial Communication Interfaces (SERCOM), each configurable as:
• USART with full-duplex and single-wire half-duplex configuration
• ISO7816
• I2C up to 3.4MHz1
• SPI
– One AES encryption engine
1 Max 1 high-speed mode and max 3 fast mode I2C
Atmel SAM L22G / L22J / L22N [DATASHEET]
Atmel-42402E-SAM L22G / L22J / L22N_Datasheet_Complete-07/2016
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– One True Random Generator (TRNG)
– One Configurable Custom Logic (CCL)
– One 12-bit, 1MSPS Analog-to-Digital Converter (ADC) with up to 20 channels
• Differential and single-ended input
• Oversampling and decimation in hardware to support 13-, 14-, 15-, or 16-bit resolution
– Two Analog Comparators (AC) with window compare function
– Peripheral Touch Controller (PTC)
• Up to 256-Channel capacitive touch sensing
– Maximum Mutual-Cap up to 16x16 channels
– Maximum Self-Cap up to 24 channels
• Wake-up on touch in standby mode
• Oscillators
– 32.768kHz crystal oscillator (XOSC32K)
– 0.4-32MHz crystal oscillator (XOSC)
– 32.768kHz ultra-low-power internal oscillator (OSCULP32K)
– 16/12/8/4MHz high-accuracy internal oscillator (OSC16M)
– 48MHz Digital Frequency Locked Loop (DFLL48M)
– 96MHz Fractional Digital Phased Locked Loop (FDPLL96M)
• I/O
– Up to 82 programmable I/O pins
– Up to 52 segment LCD pins can be used as GPIO/GPI
– Up to 5 wake-up pins with optional debouncing
– Up to 5 tamper input pins
– 1 tamper output pin
• Pin and code compatible with SAM D and SAM L Cortex-M0+ Families2
• Packages
– 100-pin TQFP
– 64-pin TQFP, QFN
– 49-pin WLCSP
– 48-pin TQFP, QFN
• Operating Voltage
– 1.62V – 3.63V
2 except the VLCD
Atmel SAM L22G / L22J / L22N [DATASHEET]
Atmel-42402E-SAM L22G / L22J / L22N_Datasheet_Complete-07/2016
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