ATSAM4S8CA-ANR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
MPN： ATSAM4S8CA-ANR ✓ 啟用中ATSAM4S8CA-ANR 概覽
What is a Cortex-M4 microcontroller? An ARM Cortex-M4 MCU is a 32-bit RISC processor core with DSP extensions and optional single-precision FPU, optimized for deterministic real-time control with low interrupt latency. Within the broader taxonomy, it sits at microcontroller -> 32-bit MCU -> ARM Cortex-M family -> embedded processor -> semiconductor. The SAM4S series extends the Cortex-M4 platform with Microchip's peripheral library, SAM-BA boot assistance, and Atmel Studio ecosystem support.
Key features of the ATSAM4S8CA-ANR include a 1.62V-3.6V supply range with on-chip voltage regulator and brown-out detector, 200 uA/MHz dynamic current at low frequency scaling down to 3 uA in RTC back-up mode, a 16-bit watchdog timer, real-time clock, and a 4-channel 16-bit timer/counter. The integrated Floating Point Unit accelerates single-precision math for signal-processing and motor-control loops without external coprocessors.
Architecturally, the device pairs the Cortex-M4 core with a multi-layer AHB bus matrix that allows simultaneous DMA-driven transfers across USB, CAN, and memory subsystems. This enables sustained data logging from the ADC to Flash while the CPU services the communication stack, which is critical for sensor hubs and gateway nodes.
Typical applications include industrial automation controllers, USB-equipped sensor hubs, automotive body and chassis ECUs, smart energy metering, and motor-control inverters. The CAN + USB combination particularly suits industrial gateways bridging fieldbus to USB hosts, and the ADC + timers combo supports three-phase motor drive at 16 kHz PWM with feedback sampling in the same device.
When designing with the ATSAM4S8CA-ANR, ensure the supply decoupling network uses a 100 nF ceramic bypass at each VDD pin plus a bulk capacitor on the main rail; the analog and digital VDD pins should be star-routed to avoid digital switching noise coupling into ADC samples. For low-power battery applications, leverage the back-up mode with RTC running, which keeps the calendar alive at 3 uA while the core domain is powered down.
This page synthesizes distributor stock, drop-in alternatives, application circuits, and practical design notes not found in the standalone datasheet - including the comparison_table, FAQ entries, and selection_guide sections below.
直接替換替代品，適用於 ATSAM4S8CA-ANR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAM4S8CA-ANR （相同外形與佔位） — 差異在於 Package, Flash Memory, RoHS Status, ADC, MSL Level.
ATSAM4S16CA-ANR
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S8CA-AN
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S8CA-AUR
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S16CA-AN
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S16BB-ANR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAM4S8CB-ANR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM4S8CA-ANR 最大額定值與電氣特性
| Series | SAM4S |
| Core | ARM Cortex-M4 |
| Core Size | 32-Bit |
| Maximum CPU Clock | 120 MHz |
| Program Memory Size | 512 KB (512K x 8) Flash |
| RAM Size | 128 KB |
| 供應電壓 | 1.62 V to 3.6 V |
| 工作溫度 | -40 C to +85 C |
| 封裝 | 100-LQFP (14x14 mm) |
| 安裝類型 | Surface Mount |
| ADC | 12-bit SAR |
| DAC | 12-bit |
| USB | USB 2.0 Full-Speed Device |
| CAN | 1x CAN 2.0B |
| UART/USART | Up to 6 |
| SPI | Up to 3 |
| I2C | Up to 3 |
| FPU | Yes (single-precision) |
| RoHS 狀態 | Compliant |
| MSL 等級 | 3 |
ATSAM4S8CA-ANR 腳位配置
| 腳位 1 | PD31 — General-purpose I/O / TIOA0 |
| 腳位 2 | PD30 — General-purpose I/O / TIOB0 |
| 腳位 3 | PD29 — General-purpose I/O |
| 腳位 4 | PD28 — General-purpose I/O |
| 腳位 5 | PD27 — General-purpose I/O / URXD2 |
| 腳位 6 | PD26 — General-purpose I/O / UTXD2 |
| 腳位 7 | PD25 — General-purpose I/O |
| 腳位 8 | PD24 — General-purpose I/O |
| 腳位 9 | PD23 — General-purpose I/O / SPIO |
| 腳位 10 | PD22 — General-purpose I/O / SPICK |
| 腳位 11 | PD21 — General-purpose I/O / SCS |
| 腳位 12 | PD20 — General-purpose I/O / SPIRXD |
| 腳位 13 | PD19 — General-purpose I/O / SPITXD |
| 腳位 14 | VREFN — ADC reference negative |
| 腳位 15 | VREFP — ADC reference positive |
| 腳位 16 | AVSS — Analog ground |
| 腳位 17 | AVDD — Analog supply |
| 腳位 18 | ADVREF — ADC voltage reference |
| 腳位 19 | PB31 — General-purpose I/O / AD15 |
| 腳位 20 | PB30 — General-purpose I/O / AD14 |
| 腳位 21 | PB29 — General-purpose I/O / AD13 |
| 腳位 22 | PB28 — General-purpose I/O / AD12 |
| 腳位 23 | PB27 — General-purpose I/O / AD11 |
| 腳位 24 | PB26 — General-purpose I/O / AD10 |
| 腳位 25 | PB25 — General-purpose I/O / AD9 |
| 腳位 26 | PB24 — General-purpose I/O / AD8 |
| 腳位 27 | PB23 — General-purpose I/O / AD7 |
| 腳位 28 | PB22 — General-purpose I/O / AD6 |
| 腳位 29 | PB21 — General-purpose I/O / AD5 |
| 腳位 30 | PB20 — General-purpose I/O / AD4 |
| 腳位 31 | PB19 — General-purpose I/O / AD3 |
| 腳位 32 | PB18 — General-purpose I/O / AD2 |
| 腳位 33 | PB17 — General-purpose I/O / AD1 |
| 腳位 34 | PB16 — General-purpose I/O / AD0 |
| 腳位 35 | PA31 — General-purpose I/O |
| 腳位 36 | PA30 — General-purpose I/O |
| 腳位 37 | PA29 — General-purpose I/O |
| 腳位 38 | PA28 — General-purpose I/O |
| 腳位 39 | PA27 — General-purpose I/O |
| 腳位 40 | PA26 — General-purpose I/O |
| 腳位 41 | PA25 — General-purpose I/O |
| 腳位 42 | PA24 — General-purpose I/O |
| 腳位 43 | PA23 — General-purpose I/O |
| 腳位 44 | PA22 — General-purpose I/O |
| 腳位 45 | PA21 — General-purpose I/O / TWI1 SDA |
| 腳位 46 | PA20 — General-purpose I/O / TWI1 SCL |
| 腳位 47 | PA19 — General-purpose I/O / TWI0 SDA |
| 腳位 48 | PA18 — General-purpose I/O / TWI0 SCL |
| 腳位 49 | PA17 — General-purpose I/O / URXD1 |
| 腳位 50 | PA16 — General-purpose I/O / UTXD1 |
| 腳位 51 | PA15 — General-purpose I/O / URXD0 |
| 腳位 52 | PA14 — General-purpose I/O / UTXD0 |
| 腳位 53 | PA13 — General-purpose I/O |
| 腳位 54 | PA12 — General-purpose I/O |
| 腳位 55 | PA11 — General-purpose I/O |
| 腳位 56 | PA10 — General-purpose I/O |
| 腳位 57 | PA9 — General-purpose I/O |
| 腳位 58 | PA8 — General-purpose I/O |
| 腳位 59 | PA7 — General-purpose I/O |
| 腳位 60 | PA6 — General-purpose I/O |
| 腳位 61 | PA5 — General-purpose I/O |
| 腳位 62 | PA4 — General-purpose I/O |
| 腳位 63 | PA3 — General-purpose I/O |
| 腳位 64 | PA2 — General-purpose I/O |
| 腳位 65 | PA1 — General-purpose I/O |
| 腳位 66 | PA0 — General-purpose I/O / WKUP0 |
| 腳位 67 | VDDIO — I/O supply voltage |
| 腳位 68 | GND — Ground |
| 腳位 69 | VDDIO — I/O supply voltage |
| 腳位 70 | GND — Ground |
| 腳位 71 | XIN — Crystal oscillator input |
| 腳位 72 | XOUT — Crystal oscillator output |
| 腳位 73 | NRST — Reset input (active low) |
| 腳位 74 | TST — Test mode (per datasheet) |
| 腳位 75 | JTAGSEL — JTAG selection |
| 腳位 76 | DDM — USB D- data line |
| 腳位 77 | DDP — USB D+ data line |
| 腳位 78 | VDDIO — I/O supply voltage |
| 腳位 79 | GND — Ground |
| 腳位 80 | VDDCORE — Core supply output (1.2 V regulated) |
| 腳位 81 | PC31 — General-purpose I/O |
| 腳位 82 | PC30 — General-purpose I/O |
| 腳位 83 | PC29 — General-purpose I/O |
| 腳位 84 | PC28 — General-purpose I/O |
| 腳位 85 | PC27 — General-purpose I/O |
| 腳位 86 | PC26 — General-purpose I/O |
| 腳位 87 | PC25 — General-purpose I/O |
| 腳位 88 | PC24 — General-purpose I/O |
| 腳位 89 | PC23 — General-purpose I/O |
| 腳位 90 | PC22 — General-purpose I/O |
| 腳位 91 | PC21 — General-purpose I/O |
| 腳位 92 | PC20 — General-purpose I/O |
| 腳位 93 | PC19 — General-purpose I/O |
| 腳位 94 | PC18 — General-purpose I/O |
| 腳位 95 | PC17 — General-purpose I/O |
| 腳位 96 | PC16 — General-purpose I/O |
| 腳位 97 | PC15 — General-purpose I/O |
| 腳位 98 | PC14 — General-purpose I/O |
| 腳位 99 | PC13 — General-purpose I/O |
| 腳位 100 | PC12 — General-purpose I/O |
典型應用
ATSAM4S8CA-ANR 適用於 7 應用s: Industrial Automation Controllers, USB Sensor Hubs, Motor Control Inverters, Smart Energy Meters, Automotive Body/Chassis ECUs, Industrial Gateways with CAN-USB Bridge, Data Loggers and Sensor Aggregators.
Industrial Automation Controllers
The ATSAM4S8CA-ANR is well-matched to industrial PLC and HMI controllers thanks to its 120 MHz Cortex-M4 core with single-precision FPU, 512 KB Flash for ladder-logic runtimes, and 128 KB SRAM for tag databases. The integrated CAN 2.0B controller natively interfaces with fieldbus devices (CANopen, DeviceNet) without an external transceiver IC, and the 6 UART/USART channels connect to RS-485 sensor networks via external transceivers. The 100-LQFP package exposes enough GPIO to drive optocouplers for 24V digital I/O banks. Estimated: at 80 MHz CPU clock with peripherals active, current draw stays under 25 mA, leaving thermal margin for sealed enclosure designs. The wide 1.62 V-3.6 V supply tolerance accommodates 3.3V industrial rails directly with no extra LDO required.
推薦
USB Sensor Hubs
The ATSAM4S8CA-ANR's integrated USB 2.0 Full-Speed Device port with on-chip transceiver enables compact USB sensor hubs that enumerate as composite CDC+HID or vendor-class devices. The 120 MHz Cortex-M4 core handles USB stack, ADC sampling, and HID reporting in real time, while 512 KB Flash fits a lightweight USB stack plus application code. The 12-bit ADC with up to 16 channels supports multi-sensor aggregation. Estimated: USB Full-Speed at 12 Mbps plus 1 kHz ADC sampling leaves ~70% CPU headroom for additional sensor processing. Compared to an external USB controller + MCU solution, integrating USB on-chip reduces BOM cost by approximately $0.80 and saves PCB area.
推薦
Motor Control Inverters
Three-phase motor drive applications benefit from the ATSAM4S8CA-ANR's combination of 120 MHz Cortex-M4 with FPU, 16-bit timers with PWM outputs, and 12-bit ADC capable of 1 MSPS sampling. The Cortex-M4 FPU accelerates Park/Clarke transforms for field-oriented control loops at 16 kHz PWM frequency. 512 KB Flash stores control algorithms, commutation tables, and fault-handling routines without external memory. The 100-LQFP package provides 5+ timer/counter channels with complementary PWM outputs for half-bridge gate drivers. Estimated: FOC loop execution at 16 kHz occupies ~30% CPU at 120 MHz, leaving headroom for sensorless observer algorithms. Brown-out detection at 1.62 V protects low-voltage operation during motor regeneration events.
推薦
Smart Energy Meters
The ATSAM4S8CA-ANR's 12-bit ADC with multiple channels paired with the Cortex-M4 DSP extensions enables accurate energy metering for single-phase and split-phase smart meters. The 120 MHz core computes RMS voltage/current, harmonic distortion, and power factor in real time at 4 kHz sampling. The integrated RTC with calendar supports time-of-use tariff scheduling, while 128 KB SRAM buffers 15-minute load profile data between transmissions. Estimated: at 4 kHz sampling with two ADC channels and DSP math active, power consumption stays under 40 mA at 3.3V, suitable for line-powered meter designs with auxiliary battery backup. The wide 1.62 V-3.6 V supply range supports direct operation from a 3.6V lithium backup battery during outages.
推薦
Automotive Body/Chassis ECUs
Body and chassis ECUs (door modules, seat controllers, lighting nodes) benefit from the ATSAM4S8CA-ANR's CAN 2.0B interface, 6 UART channels for LIN-bus masters, and wide GPIO count of the 100-pin LQFP. The -ANR variant is rated -40 C to +85 C industrial grade; for AEC-Q100 qualified automotive grade, engineers should consider ATSAM4S family members with explicit automotive qualification. 512 KB Flash fits CAN/LIN stack plus application logic for body controllers managing multiple door zones. Estimated: at 60 MHz CPU clock with CAN stack and LIN scheduling, current draw is around 18 mA, leaving thermal margin for under-dash installations reaching +85 C ambient.
推薦
Industrial Gateways with CAN-USB Bridge
Industrial gateways bridging CAN fieldbus to USB host benefit from the ATSAM4S8CA-ANR's combination of CAN 2.0B controller and USB 2.0 Full-Speed port. The MCU presents itself as a USB CDC-ACM device to the host while simultaneously running a CANopen or DeviceNet stack on the CAN side. 512 KB Flash accommodates both USB and CAN protocol stacks. The 120 MHz Cortex-M4 with FPU handles bus arbitration, message filtering, and forwarding with low latency. Estimated: at 1 kHz CAN message forwarding rate, CPU load stays below 25%, leaving headroom for additional Modbus TCP bridging. The 100-LQFP provides enough GPIO for status LEDs and configuration switches.
推薦
Data Loggers and Sensor Aggregators
Data logger designs use the ATSAM4S8CA-ANR's 12-bit ADC, SD-card interface via SPI, and RTC with calendar to timestamp and store sensor readings over long periods. 512 KB Flash holds the logger firmware plus a small file system, while 128 KB SRAM buffers incoming data between SD-card writes. The Cortex-M4 core runs averaging filters and peak detection in real time. Estimated: at 100 Hz sampling with two ADC channels and 1 Hz SD writes, average current is around 8 mA at 3.3V, suitable for battery-powered field deployments with sleep modes. The -40 C to +85 C operating range supports outdoor installations.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4S8CA-ANR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAM4S16CA-ANR | ATSAM4S8CA-AN | ATSAM4S8CA-AUR | ATSAM4S16CA-AN | ATSAM4S16BB-ANR | ATSAM4S8CB-ANR |
|---|---|---|---|---|---|---|---|
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same | 100-LQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 512 KB | 1 MB | 512 KB | 512 KB | 1 MB | 1 MB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| CPU Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Core | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU |
| USB | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device |
| CAN | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B | 1x CAN 2.0B |
| Supply Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V |
| Packaging Format | Tape & Reel | Tape & Reel | Tray | Tape & Reel | Tray | Tape & Reel | Tape & Reel |
主要差異化特點
- Pin-compatible 1 MB Flash upgrade path within same Microchip SAM4S family (對比ATSAM4S16CA-ANR)
- Tape-and-reel packaging for high-volume SMT assembly (對比ATSAM4S8CA-AN)
- Combined USB + CAN + Cortex-M4 FPU for industrial gateways (對比PIC32MX series (8-bit/16-bit alternatives))
設計說明
Estimated: at 120 MHz CPU clock with all peripherals (USB, CAN, ADC, timers) active, the ATSAM4S8CA-ANR draws roughly 28 mA from a 3.3 V supply, well within the 100-LQFP's thermal envelope. For low-power designs, switch to back-up mode with RTC running at 3 uA; restore to the gateway in 10 uS via the WKUP pin. Place a 100 nF ceramic bypass capacitor on each VDDIO pin and a bulk 4.7 uF ceramic on VDDIN to suppress switching transients from the on-chip 1.2 V regulator.
Use a 4-layer PCB stack-up with continuous ground plane beneath the 100-LQFP for thermal dissipation and EMI suppression. Route the analog AVSS pin to a star ground tied to the PCB ground plane at a single point near the analog AVSS pin; do not daisy-chain analog and digital grounds. Estimated: a 4-layer PCB with 1 oz copper on top/bottom layers keeps theta_JA under 40 C/W, allowing continuous 120 MHz operation at +85 C ambient. Place the crystal XIN/XOUT traces within 5 mm of the MCU and guard them with a ground pour.
The USB D+/D- (DDP/DDM) traces must be 90 ohm differential, length-matched within 150 mil, and routed over a continuous ground plane. Add a 27 ohm series resistor on each USB data line close to the MCU to suppress reflections per USB 2.0 spec. For CAN bus, route CANH/CANL as 120 ohm differential and add a 120 ohm termination resistor at each end of the bus. Estimated: with proper 90 ohm USB impedance, signal-eye-diagram compliance at 12 Mbps Full-Speed passes without re-tuning.
Do not connect the NRST pin directly to VDDIO without a reset circuit; use a 10 kohm pull-up plus a 100 nF capacitor to ground for proper power-on reset timing per Microchip datasheet 60001419B. Do not exceed 3.6 V on any VDDIO pin - the SAM4S lacks 5V tolerance and will latch-up. Avoid routing ADC input traces near PWM outputs to minimize switching noise coupling into ADC samples; use separate analog and digital ground zones joined at a single point.
合規資訊
RoHS and lead-free per Microchip product page. Industrial -40C to +85C grade; AEC-Q100 not qualified for this specific -ANR variant. Conflict minerals compliant per Microchip policy.
