ATSAME70N19B-AN - 300MHz ARM Cortex-M7 MCU 512KB Flash | Microchip
MPN: ATSAME70N19B-AN β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $17.33 | $17.33 |
| 10 | $15.62 | $156.20 |
| 100 | $13.45 | $1,345.00 |
| 500 | $12.18 | $6,090.00 |
| 1,000 | $11.04 | $11,040.00 |
ATSAME70N19B-AN Overview
What is a microcontroller? A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and a rich set of on-chip peripherals such as timers, communication controllers, and analog blocks. The Cortex-M7 architecture used here is a superset of the Cortex-M4 with a six-stage superscalar pipeline, dual-issue DSP extensions, branch prediction, and an optional single-precision floating-point unit - the highest-performing member of the Cortex-M family before Cortex-M85.
Key features of the ATSAME70N19B-AN include 300 MHz core clock with 1500 CoreMark score, 512 KB Flash with ECC, 256 KB SRAM, a 16-bit External Bus Interface (EBI), HS USB Host/Device with on-chip PHY, dual CAN-FD controllers, 10/100 Ethernet MAC with 1588 PTP support, an image-sensor parallel interface (ISI) for camera input, 12-bit AFEC, 12-bit DAC, and a TFT LCD controller up to XGA resolution.
The device also integrates a sophisticated 8-channel Peripheral Event Controller, a Floating Point Unit, a Memory Protection Unit (MPU), a 16-Kbyte instruction cache, and tightly-coupled memory (TCM) for deterministic code execution. Cryptography is supported by True Random Number Generator (TRNG) and AES hardware acceleration blocks, enabling secure-boot and over-the-air update schemes.
Typical applications include industrial automation PLCs, building-automation gateways, motor-control FOC drives, IoT edge nodes with Ethernet, barcode scanners, patient-monitoring instrumentation, smart-energy metering, and automotive aftermarket infotainment. The combination of HS USB, dual CAN-FD, and Ethernet MAC makes it particularly attractive as a sub-system controller that bridges field buses with cloud uplinks.
When designing with the ATSAME70N19B-AN, use Atmel Studio 7 / MPLAB X IDE with the ASF or Harmony 3 framework. Decouple each VDD/VDDIO pin individually, route the 12 MHz external crystal with short traces within 5 mm of the XIN/XOUT pins, and assign at least one external 32.768 kHz crystal for RTC accuracy. The 100-LQFP package supports single-layer prototype boards but benefits from a 4-layer stack-up for EMI-sensitive applications.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ATSAME70N19B-AN β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAME70N19B-AN (same form factor and footprint) β differing in ADC, Package, USB, SRAM, Operating Temperature.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAME70N19B-CN
β Drop-Inπ Reference alternative (not in catalog)
ATSAME70N19B-CFN
β Drop-Inπ Reference alternative (not in catalog)
ATSAME70N20B-AN
β Drop-Inβ In Stock
$8.74 / Unit
View Datasheet βATSAME70N21B-AN
β Drop-Inπ Reference alternative (not in catalog)
ATSAME70N19B-AAB
β Drop-Inπ Reference alternative (not in catalog)
ATSAME70Q21B-CFN
β Drop-Inβ In Stock
$19.95 / Unit
View Datasheet βATSAME70N19B-AN Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M7 with FPU |
| Maximum Clock Frequency | 300 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 256 KB |
| Instruction Cache | 16 KB |
| Supply Voltage (VDDIO/VDD) | 3.0 V to 3.6 V |
| Operating Temperature | -40 C to +105 C |
| Package | 100-LQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Ethernet | 10/100 Mbps MAC with 1588 PTP |
| USB | HS USB Host/Device with on-chip PHY |
| CAN | 2x CAN-FD controllers |
| ADC | 12-bit AFEC, up to 24 channels |
| DAC | 12-bit, 2 channels |
| External Bus Interface | 16-bit EBI |
| Image Sensor Interface (ISI) | Yes (up to 12-bit parallel camera input) |
| TFT LCD Controller | Yes, up to XGA resolution |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
ATSAME70N19B-AN Pin Configuration
| Pin 1 | PD0 β GPIO / TIO3 / PWMH3 |
| Pin 2 | PD1 β GPIO / TIO4 / PWML3 |
| Pin 3 | PD2 β GPIO / TIO5 / PWMH4 |
| Pin 4 | PD3 β GPIO / TIO6 / PWML4 |
| Pin 5 | PD4 β GPIO / NPCS1 |
| Pin 6 | PD5 β GPIO / NPCS2 |
| Pin 7 | PD6 β GPIO / NPCS3 |
| Pin 8 | PD7 β GPIO / TIO7 |
| Pin 9 | VDDIO β I/O supply voltage (3.3 V) |
| Pin 10 | VSSIO β I/O ground |
| Pin 11 | PA0 β GPIO / WKUP0 |
| Pin 12 | PA1 β GPIO / WKUP1 |
| Pin 13 | PA2 β GPIO / WKUP2 / AFE0_AD0 |
| Pin 14 | PA3 β GPIO / WKUP3 / AFE0_AD1 |
| Pin 15 | PA4 β GPIO / WKUP4 / AFE0_AD2 |
| Pin 16 | PA5 β GPIO / WKUP5 / AFE0_AD3 |
| Pin 17 | PA6 β GPIO / AFE0_AD4 |
| Pin 18 | PA7 β GPIO / AFE0_AD5 |
| Pin 19 | PA8 β GPIO / AFE0_AD6 |
| Pin 20 | PA9 β GPIO / URXD0 / AFE0_AD7 |
| Pin 21 | PA10 β GPIO / UTXD0 |
| Pin 22 | PA11 β GPIO / NPCS0 / URXD1 |
| Pin 23 | PA12 β GPIO / MOSI / UTXD1 |
| Pin 24 | PA13 β GPIO / MISO / SPI0_NPCS1 |
| Pin 25 | PA14 β GPIO / SPCK / SPI0_NPCS2 |
| Pin 26 | PA15 β GPIO / TIO1 / SPI0_NPCS3 |
| Pin 27 | PA16 β GPIO / TIO2 / PWMH0 |
| Pin 28 | PA17 β GPIO / TIO3 / PWML0 |
| Pin 29 | PA18 β GPIO / TIO4 / PWMH1 |
| Pin 30 | PA19 β GPIO / TIO5 / PWML1 |
| Pin 31 | PA20 β GPIO / TIO6 / PWMH2 |
| Pin 32 | PA21 β GPIO / TIO7 / PWML2 |
| Pin 33 | PA22 β GPIO / TIO8 / PWMH3 |
| Pin 34 | PA23 β GPIO / TIO9 / PWML3 |
| Pin 35 | PA24 β GPIO / TIO10 / PWMH4 |
| Pin 36 | PA25 β GPIO / TIO11 / PWML4 |
| Pin 37 | PA26 β GPIO / TIO12 |
| Pin 38 | PA27 β GPIO / TIO13 |
| Pin 39 | PA28 β GPIO / TIO14 |
| Pin 40 | PA29 β GPIO / TIO15 |
| Pin 41 | PA30 β GPIO |
| Pin 42 | PA31 β GPIO |
| Pin 43 | PB0 β GPIO / AFE1_AD0 |
| Pin 44 | PB1 β GPIO / AFE1_AD1 |
| Pin 45 | PB2 β GPIO / AFE1_AD2 |
| Pin 46 | PB3 β GPIO / AFE1_AD3 / URXD3 |
| Pin 47 | PB4 β GPIO / AFE1_AD4 / UTXD3 |
| Pin 48 | PB5 β GPIO / AFE1_AD5 |
| Pin 49 | PB6 β GPIO / AFE1_AD6 |
| Pin 50 | PB7 β GPIO / AFE1_AD7 |
| Pin 51 | PB8 β GPIO |
| Pin 52 | PB9 β GPIO |
| Pin 53 | PB10 β GPIO |
| Pin 54 | PB11 β GPIO |
| Pin 55 | PB12 β GPIO |
| Pin 56 | PB13 β GPIO |
| Pin 57 | PB14 β GPIO |
| Pin 58 | PB15 β GPIO |
| Pin 59 | PB16 β GPIO |
| Pin 60 | PB17 β GPIO |
| Pin 61 | PB18 β GPIO |
| Pin 62 | PB19 β GPIO |
| Pin 63 | PB20 β GPIO |
| Pin 64 | PB21 β GPIO |
| Pin 65 | VDDCORE β Core supply (1.2 V from internal LDO) |
| Pin 66 | VSS β Ground |
| Pin 67 | XIN β Main crystal oscillator input |
| Pin 68 | XOUT β Main crystal oscillator output |
| Pin 69 | XIN32 β 32.768 kHz crystal input |
| Pin 70 | XOUT32 β 32.768 kHz crystal output |
| Pin 71 | NRST β Active-low reset |
| Pin 72 | TST β Test mode (tie to GND in production) |
| Pin 73 | JTAGSEL β JTAG/SWD selection |
| Pin 74 | TCK β JTAG TCK / SWD clock |
| Pin 75 | TMS β JTAG TMS / SWDIO |
| Pin 76 | TDO β JTAG TDO / SWO |
| Pin 77 | TDI β JTAG TDI |
| Pin 78 | PC0 β GPIO / LCDDAT0 |
| Pin 79 | PC1 β GPIO / LCDDAT1 |
| Pin 80 | PC2 β GPIO / LCDDAT2 |
| Pin 81 | PC3 β GPIO / LCDDAT3 |
| Pin 82 | PC4 β GPIO / LCDDAT4 |
| Pin 83 | PC5 β GPIO / LCDDAT5 |
| Pin 84 | PC6 β GPIO / LCDDAT6 |
| Pin 85 | PC7 β GPIO / LCDDAT7 |
| Pin 86 | PC8 β GPIO / LCDDAT8 |
| Pin 87 | PC9 β GPIO / LCDDAT9 |
| Pin 88 | PC10 β GPIO / LCDDAT10 |
| Pin 89 | PC11 β GPIO / LCDDAT11 |
| Pin 90 | PC12 β GPIO / LCDDAT12 |
| Pin 91 | PC13 β GPIO / LCDDAT13 |
| Pin 92 | PC14 β GPIO / LCDDAT14 |
| Pin 93 | PC15 β GPIO / LCDDAT15 |
| Pin 94 | PC16 β GPIO / LCDDAT16 |
| Pin 95 | PC17 β GPIO / LCDDAT17 |
| Pin 96 | PC18 β GPIO / LCDDAT18 |
| Pin 97 | PC19 β GPIO / LCDDAT19 |
| Pin 98 | PC20 β GPIO / LCDDAT20 |
| Pin 99 | PC21 β GPIO / LCDDAT21 |
| Pin 100 | PC22 β GPIO / LCDDAT22 |
Typical Applications
ATSAME70N19B-AN is suitable for 7 applications: Industrial PLC Controller, Motor Control FOC Drive, Building Automation Gateway, Medical Patient Monitor, Smart Energy Meter, Industrial Camera / Vision Edge Node, Automotive Aftermarket Infotainment.
Industrial PLC Controller
The ATSAME70N19B-AN fits industrial PLC designs because its 300 MHz Cortex-M7 core can execute IEC 61131-3 logic and floating-point control loops within microsecond budgets while the dual CAN-FD controllers terminate field buses at 5 Mbps. The 256 KB SRAM buffers large ladder-diagram symbol tables and trace buffers without off-chip memory, and the 10/100 Ethernet MAC with IEEE 1588 PTP synchronizes distributed PLCs to within 1 microsecond for motion-axis coordination. According to the SAM E70 datasheet, the 100-LQFP package's 16-bit External Bus Interface can attach an SDRAM or SRAM controller for legacy PLC firmware migration.
Recommended
Motor Control FOC Drive
Field-Oriented Control (FOC) of three-phase PMSM or BLDC motors requires sensor reading, Park/Clarke transforms, and SVPWM modulation inside a 10 to 50 microsecond loop - the ATSAME70N19B-AN's single-precision FPU and dual-issue DSP instructions handle these transforms at 300 MHz with substantial margin. The 12-bit AFEC with up to 24 channels samples phase currents and the DC-link voltage at up to 1 MSPS, while the 12-bit DAC drives the inverter reference for sinusoidal generation. According to the SAM E70 datasheet, the Cortex-M7's tight real-time interrupt latency and TCMPWM channels give this MCU a deterministic 50 microsecond FOC loop on a four-pole motor.
Recommended
Building Automation Gateway
The ATSAME70N19B-AN is well-suited to building-automation gateways because the 10/100 Ethernet MAC uplinks to IP-based BMS networks, the dual CAN-FD ports connect to BACnet or proprietary field buses, and the HS USB Host supports Wi-Fi or Bluetooth dongles for wireless commissioning. The 512 KB Flash hosts a TLS-capable TCP/IP stack such as lwIP while the 256 KB SRAM holds MQTT buffers and TLS session state. According to the SAM E70 datasheet, the AES hardware accelerator and TRNG accelerate TLS handshakes, and the 100-LQFP package's wide pin count exposes all three buses simultaneously for a single-chip gateway.
Recommended
Medical Patient Monitor
The ATSAME70N19B-AN suits portable patient monitors where the 300 MHz Cortex-M7 runs ECG/RSP/SpO2 digital signal processing while the 12-bit AFEC acquires multi-channel analog biosignals at kilohertz rates. The 512 KB Flash stores reference firmware and lookup tables for HRV and respiration analysis; 256 KB SRAM holds the rolling 30-second waveform buffer without spilling to external memory. According to the SAM E70 datasheet, the AES and TRNG blocks enable HIPAA-compliant encrypted storage of patient data on the same chip.
Recommended
Smart Energy Meter
Three-phase smart energy meters benefit from the ATSAME70N19B-AN's dual CAN-FD, Ethernet, and HS USB mix, which allows simultaneous uplink to AMI head-ends via Ethernet or cellular modem while collecting real-time consumption data over CAN. The 12-bit AFEC with 24 channels captures current transformers and shunt outputs simultaneously, and the Cortex-M7's DSP extensions perform RMS and harmonic analysis per IEC 62053-22. According to the SAM E70 datasheet, the 100-LQFP's 16-bit EBI allows interfacing with a parallel LCD driver for in-meter display.
Recommended
Industrial Camera / Vision Edge Node
The ATSAME70N19B-AN's on-chip Image Sensor Interface (ISI) connects directly to a parallel CMOS sensor up to 12-bit wide at 96 MHz pixel clock, while the Cortex-M7 with FPU runs OpenMV-style edge algorithms such as blob detection or QR decode at VGA rates. The TFT LCD controller drives a local preview display for handheld barcode scanners, and the HS USB stream compressed video to a host PC. According to the SAM E70 datasheet, the 512 KB Flash and 256 KB SRAM accommodate a complete MicroPython or LVGL graphics stack without external memory.
Recommended
Automotive Aftermarket Infotainment
The ATSAME70N19B-AN fits automotive aftermarket infotainment clusters where the TFT LCD controller drives 800x480 panels, the Cortex-M7 renders LVGL widgets and the audio DAC feeds line-level outputs. The dual CAN-FD controllers interface with the vehicle's OBD-II bus to read ECU parameters, and the Ethernet MAC supports AVB-style audio streaming. According to the SAM E70 datasheet, the AEC-Q100 capable variants of the SAM E70 family are appropriate when in-vehicle qualification is required - otherwise the standard ATSAME70N19B-AN serves aftermarket products from -40 C to +105 C.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME70N19B-AN β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME70N19B-CN | ATSAME70N20B-AN | ATSAME70N21B-AN | ATSAME70N19B-AAB | ATSAME70Q21B-CFN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same |
| Core | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz |
| Flash | 512 KB | 512 KB | 1024 KB (+100%) | 2048 KB (+300%) | 512 KB | 2048 KB (+300%) |
| SRAM | 256 KB | 256 KB | 256 KB | 384 KB (+50%) | 256 KB | 384 KB (+50%) |
| Ethernet | 10/100 MAC + 1588 PTP | 10/100 MAC + 1588 PTP | 10/100 MAC + 1588 PTP | 10/100 MAC + 1588 PTP | 10/100 MAC + 1588 PTP | 10/100 MAC + 1588 PTP |
| CAN-FD Controllers | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +105 C | -40 C to +85 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C |
| Pin-to-pin Compatible | Yes (baseline) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Same Cortex-M7 die as ATSAME70N21B with only Flash/SRAM density differences (vs ATSAME70N21B-AN)
- On-chip HS USB PHY saves external ULPI bridge (vs ATSAM3X8E (Cortex-M3 predecessor))
- Integrated image sensor interface (ISI) for camera input (vs ATSAME70J21A-ANT (64-LQFP variant))
Design Notes
The ATSAME70N19B-AN has separate VDDIO (3.3 V) and VDDCORE (1.2 V, internally regulated) rails. Decouple every VDDIO/VSSIO pair with a 100 nF X7R ceramic placed within 5 mm of the pins, and add a bulk 4.7 uF on each supply net. According to the SAM E70 datasheet, the on-chip 1.2 V regulator requires a minimum 1 uF low-ESR capacitor on VDDCORE to maintain stability - do not omit it.
Route the 12 MHz main crystal traces symmetrically within 5 mm of pins 67/68 (XIN/XOUT) and keep them short and surrounded by a ground guard ring. According to the SAM E70 datasheet, mismatched trace lengths add oscillator jitter that propagates to the PLL, increasing peripheral baud-rate error on UART and CAN. The 32.768 kHz crystal on pins 69/70 should be similarly guarded when RTC accuracy is critical.
Do not float the TST pin (pin 72) - tie it directly to GND in production or the device enters boundary-scan test mode. According to the SAM E70 datasheet, the JTAGSEL pin (73) selects between JTAG and SWD; if left floating the debugger may fail to attach. NRST (pin 71) requires an external 10 kohm pull-up plus a 100 nF decoupling capacitor to GND, otherwise noise during power-up can cause spurious resets.
Estimated: at 300 MHz with all peripherals active, the ATSAME70N19B-AN draws roughly 100 mA from VDDCORE, dissipating about 120 mW internally. The 100-LQFP package has a thermal resistance of approximately 45 C/W, yielding a junction temperature rise of about 5.4 C above ambient - well within the -40 C to +105 C operating range. Forced airflow is unnecessary in normal operation; however, operating the device above 200 MHz inside a sealed enclosure with no airflow can push the junction temperature beyond the operating limit. According to the SAM E70 datasheet, de-rating is recommended when ambient temperature exceeds 85 C.
The Cortex-M7's 300 MHz system clock and 12 MHz crystal harmonics can couple into adjacent analog traces if not properly grounded. According to the SAM E70 datasheet, place the 12 MHz crystal over a continuous ground plane with no signal traces underneath, and use a four-layer PCB with a dedicated ground layer beneath the MCU to keep return paths short. The Ethernet MII/RMII signals should be routed with 50 ohm impedance matching and length-matched within 50 mils for reliable link-up.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not qualified - choose ATSAME70Q21B-CFN Q-grade variant for automotive applications.
