ATSAM4SA16CA-AN - 120MHz Cortex-M4 MCU 1MB Flash LQFP-100
料号： ATSAM4SA16CA-AN ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.71 | $87.10 |
| 100 | $7.55 | $755.00 |
| 500 | $6.8 | $3,400.00 |
| 1,000 | $6.05 | $6,050.00 |
ATSAM4SA16CA-AN 概述
What is a Cortex-M4 microcontroller? An ARM Cortex-M4 MCU is a 32-bit microcontroller core featuring single-precision floating-point hardware, DSP extensions, and a tightly-coupled deterministic interrupt controller (NVIC). Within the broader system hierarchy, the Cortex-M4 sits between Cortex-M3 (no FPU/DSP) and Cortex-M7 (higher performance, double-precision FPU); it belongs to the Cortex-M family of embedded processors, which itself is a subset of the ARM Cortex processor portfolio targeting deterministic energy-efficient embedded systems.
Key features of the ATSAM4SA16CA-AN include its multi-layer bus matrix that allows sustained high-bandwidth peripheral operation, a multi-channel DMA controller that offloads CPU data movement, brown-out detection, a programmable watchdog timer, PWM, and a real-time event system. The 1 MB Flash enables storage of rich application code and over-the-air update images, while 128 KB SRAM supports complex protocol stacks such as USB, CAN, and TCP/IP simultaneously.
Architecturally, the SAM4S16 uses an Atmel/Microchip proprietary flash architecture with a unified 4 KB cache, hardware cryptographic acceleration is not included on this sub-family, and the Cortex-M4 core executes the Thumb-2 instruction set. Pin-to-pin compatibility with SAM7S, SAM3N, and SAM3S simplifies migration, and Microchip Studio with the Software Framework provides a full toolchain including peripheral drivers and RTOS support (FreeRTOS).
Typical applications include industrial control (PLC, motor control), USB peripherals (human-interface devices, data loggers), CAN-based automotive body modules, smart metering, and home/building automation. The wide 1.62 V to 3.6 V range supports single-cell Li-ion or 3.3 V regulated rails. Compared to switching supplies, the device's low-power Wait modes (down to single-digit µA) extend battery life in always-on sensor applications.
直接替换替代料： ATSAM4SA16CA-AN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAM4SA16CA-AN （相同外形与封装尺寸） ——差异在于 Package, RoHS Status, Core, ADC, USB.
快速对比工具——选择替代料号进行并排对比：
ATSAM4SA16CA-ANR
✅ 直接替换✓ 有现货
$5.38 / 个
查看数据手册 →ATSAM4SA16BA-AUR
✅ 直接替换✓ 有现货
$5.45 / 个
查看数据手册 →ATSAM4SA16BB-ANR
✅ 直接替换✓ 有现货
$5.49 / 个
查看数据手册 →ATSAM4S8CA-CFN
✅ 直接替换✓ 有现货
$4.8 / 个
查看数据手册 →ATSAM4S8CB-CFN
✅ 直接替换✓ 有现货
$4.74 / 个
查看数据手册 →ATSAM4S8CA-AU
✅ 直接替换✓ 有现货
$5.74 / 个
查看数据手册 →ATSAM4SA16CA-AN 最大额定值与电气特性
| Core Processor | ARM Cortex-M4 with FPU |
| Core Size | 32-Bit |
| Maximum Clock Speed | 120 MHz |
| Program Memory (Flash) | 1024 KB (1 MB) |
| RAM Size | 128 KB |
| Operating Voltage Range | 1.62 V to 3.6 V |
| Number of I/O Pins | 79 |
| 封装 | 100-LQFP (LFQFP) |
| 工作温度 | -40 °C to +105 °C (Extended Industrial) |
| Connectivity | EBI/EMI, I²C, IrDA, Memory Card, SPI, SSC, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Data Converters | A/D 16x12b + D/A 2x12b |
| 电源电压 | 1.62 V (min) to 3.6 V (max) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (Green) |
| Lead-Free / Halogen-Free | Yes (Green, MRL A) |
| Part Status | Active |
| Series | SAM4S |
| Oscillator Type | Internal + External |
ATSAM4SA16CA-AN 引脚配置
| 引脚 1 | PD0 — GPIO / NPCS0 (SPI NPCS) / PWMH0 |
| 引脚 2 | PD1 — GPIO / NPCS1 / PWML0 |
| 引脚 3 | PD2 — GPIO / NPCS2 / PWMH1 |
| 引脚 4 | PD3 — GPIO / NPCS3 / PWML1 |
| 引脚 5 | VDDOUT — Voltage regulator output (1.8 V core) |
| 引脚 6 | VREFP — ADC positive reference |
| 引脚 7 | VREFN — ADC negative reference |
| 引脚 8 | PB25 — GPIO / AD0 |
| 引脚 9 | PB26 — GPIO / AD1 |
| 引脚 10 | PB27 — GPIO / AD2 |
| 引脚 11 | PB28 — GPIO / AD3 |
| 引脚 12 | PA17 — GPIO / AD4 |
| 引脚 13 | PA18 — GPIO / AD5 |
| 引脚 14 | PA19 — GPIO / AD6 |
| 引脚 15 | PA20 — GPIO / AD7 |
| 引脚 16 | VDDIN — Voltage regulator input (1.62–3.6 V) |
| 引脚 17 | GND — Ground |
| 引脚 18 | PA21 — GPIO / AD8 / SPI NPCS |
| 引脚 19 | PA22 — GPIO / AD9 |
| 引脚 20 | PA23 — GPIO / AD10 |
| 引脚 21 | PA24 — GPIO / AD11 |
| 引脚 22 | PA25 — GPIO / AD12 |
| 引脚 23 | PA26 — GPIO / AD13 |
| 引脚 24 | PA27 — GPIO / AD14 |
| 引脚 25 | PA28 — GPIO / AD15 |
| 引脚 26 | PB29 — GPIO / DACC0 output |
| 引脚 27 | PB30 — GPIO / DACC1 output |
| 引脚 28 | PB31 — GPIO |
| 引脚 29 | PA29 — GPIO / SPI MISO |
| 引脚 30 | PA30 — GPIO / SPI MOSI |
| 引脚 31 | PA31 — GPIO / SPI SPCK |
| 引脚 32 | PB0 — GPIO / AFE0_AD0 |
| 引脚 33 | PB1 — GPIO / AFE0_AD1 |
| 引脚 34 | PB2 — GPIO / AFE0_AD2 |
| 引脚 35 | PB3 — GPIO / AFE0_AD3 |
| 引脚 36 | PB4 — GPIO / AFE0_AD4 |
| 引脚 37 | PB5 — GPIO / AFE0_AD5 |
| 引脚 38 | PB6 — GPIO / AFE0_AD6 |
| 引脚 39 | PB7 — GPIO / AFE0_AD7 |
| 引脚 40 | PB8 — GPIO / AFE0_AD8 / PWMH0 |
| 引脚 41 | PB9 — GPIO / AFE0_AD9 / PWML0 |
| 引脚 42 | PB10 — GPIO / AFE1_AD0 / PWMH1 |
| 引脚 43 | PB11 — GPIO / AFE1_AD1 / PWML1 |
| 引脚 44 | PB12 — GPIO / AFE1_AD2 / PWMH2 |
| 引脚 45 | PB13 — GPIO / AFE1_AD3 / PWML2 |
| 引脚 46 | PB14 — GPIO / AFE1_AD4 / PWMH3 |
| 引脚 47 | PB15 — GPIO / AFE1_AD5 / PWML3 |
| 引脚 48 | PB16 — GPIO / AFE1_AD6 / PWMH4 |
| 引脚 49 | PB17 — GPIO / AFE1_AD7 / PWML4 |
| 引脚 50 | GND — Ground |
| 引脚 51 | VDDIO — IO supply (1.62–3.6 V) |
| 引脚 52 | PB18 — GPIO / PWMH5 |
| 引脚 53 | PB19 — GPIO / PWML5 |
| 引脚 54 | PB20 — GPIO / PWMH6 |
| 引脚 55 | PB21 — GPIO / PWML6 |
| 引脚 56 | PB22 — GPIO / PWMH7 |
| 引脚 57 | PB23 — GPIO / PWML7 |
| 引脚 58 | PB24 — GPIO / PWMH3 ext |
| 引脚 59 | PA0 — GPIO / PWMH0 ext |
| 引脚 60 | PA1 — GPIO / PWML0 ext |
| 引脚 61 | PA2 — GPIO / PWMH1 ext |
| 引脚 62 | PA3 — GPIO / PWML1 ext |
| 引脚 63 | PA4 — GPIO / TIOA0 |
| 引脚 64 | PA5 — GPIO / TIOB0 |
| 引脚 65 | PA6 — GPIO / TIOA1 |
| 引脚 66 | PA7 — GPIO / TIOB1 |
| 引脚 67 | PA8 — GPIO / URXD |
| 引脚 68 | PA9 — GPIO / UTXD |
| 引脚 69 | PA10 — GPIO / TWD (I²C) |
| 引脚 70 | PA11 — GPIO / TWCK (I²C) |
| 引脚 71 | PA12 — GPIO / MISO |
| 引脚 72 | PA13 — GPIO / MOSI |
| 引脚 73 | PA14 — GPIO / SPCK |
| 引脚 74 | PA15 — GPIO / SPI NPCS0 |
| 引脚 75 | DDP — USB Full-Speed D+ |
| 引脚 76 | DDM — USB Full-Speed D- |
| 引脚 77 | VDDIO — IO supply (1.62–3.6 V) |
| 引脚 78 | GND — Ground |
| 引脚 79 | XIN — Crystal oscillator input |
| 引脚 80 | XOUT — Crystal oscillator output |
| 引脚 81 | PA16 — GPIO / CANRX |
| 引脚 82 | NRST — Reset (active-low) |
| 引脚 83 | TDI — JTAG TDI |
| 引脚 84 | TDO — JTAG TDO |
| 引脚 85 | TMS — JTAG TMS |
| 引脚 86 | TCK — JTAG TCK |
| 引脚 87 | PC0 — GPIO / AFE1_AD0 ext |
| 引脚 88 | PC1 — GPIO / AFE1_AD1 ext |
| 引脚 89 | PC2 — GPIO / AFE1_AD2 ext |
| 引脚 90 | PC3 — GPIO / AFE1_AD3 ext |
| 引脚 91 | PC4 — GPIO / AFE1_AD4 ext |
| 引脚 92 | PC5 — GPIO / AFE1_AD5 ext |
| 引脚 93 | PC6 — GPIO / AFE1_AD6 ext |
| 引脚 94 | PC7 — GPIO / AFE1_AD7 ext |
| 引脚 95 | PC8 — GPIO / NCS0 |
| 引脚 96 | PC9 — GPIO / NCS1 |
| 引脚 97 | PC10 — GPIO / NCS2 |
| 引脚 98 | PC11 — GPIO / NCS3 |
| 引脚 99 | PC12 — GPIO / NWR0 |
| 引脚 100 | PC13 — GPIO / NRD |
典型应用
ATSAM4SA16CA-AN 适用于 6 应用s: Industrial Motor Control (FOC / BLDC), USB Human-Interface Devices & Data Loggers, CAN-Based Automotive Body Modules, Smart Energy Meters & Building Automation, Home & Building Automation Gateways, Industrial PLC I/O & Sensor Aggregation.
Industrial Motor Control (FOC / BLDC)
The ATSAM4SA16CA-AN's 120 MHz Cortex-M4 with hardware FPU and DSP extensions directly executes Park/Clarke transforms and field-oriented-control (FOC) math for BLDC and PMSM motors. Its 1 MB Flash holds full FOC firmware plus sensorless observer code, while 128 KB SRAM runs control loops, ADC buffers, and CANopen / Modbus stacks in parallel. The 12-bit 1 Msps ADC (16 channels) samples phase currents simultaneously, and 16-bit PWM timers drive the inverter at up to 100 kHz switching frequency. Operating from -40 °C to +105 °C it tolerates cabinet-mount conditions per IEC 60068. Pair with an external 3-phase gate driver (e.g. Microchip MCP8024) for the power stage.
推荐
USB Human-Interface Devices & Data Loggers
Integrated USB 2.0 Full-Speed device peripheral with on-chip transceiver and 4 KB endpoint FIFO make the ATSAM4SA16CA-AN ideal for USB HID class devices — keyboards, custom IO panels, instrumentation bridges — and high-throughput data loggers streaming to a host PC. The Cortex-M4 executes USB stack + file-system write (FAT/exFAT) in parallel because 128 KB SRAM and 1 MB Flash comfortably hold composite USB + application code. Multi-channel DMA offloads ADC → RAM transfers during acquisition while USB bulk endpoints ship samples at 1 MB/s. Industrial -40 °C to +105 °C range and 3.3 V single-supply operation simplify bus-powered designs.
推荐
CAN-Based Automotive Body Modules
The ATSAM4SA16CA-AN's on-chip CAN 2.0B controller and high-speed 120 MHz core handle multiple CAN-FD / Classic CAN message streams for body-electronics modules like body controllers, HVAC panels, and seat controllers. 1 MB Flash stores the full CANopen / J1939 stack plus diagnostic firmware, while 128 KB SRAM absorbs peak bus loads. Hardware crypto acceleration is absent, but software SHA/AES fits the remaining headroom. Operating temperature -40 °C to +105 °C covers passenger cabin and under-hood sub-modules; for safety-critical ECUs (ASIL-D) consider ATSAM3X8E or ATSAMV71 family instead.
推荐
Smart Energy Meters & Building Automation
Energy-metering designs leverage the ATSAM4SA16CA-AN's 12-bit ADC (16 channels) to simultaneously sample voltage and current from multiple loads, while the Cortex-M4 performs real-time RMS, harmonics (FFT), and active/reactive power calculations. The 1 MB Flash holds metering firmware, calibration constants, and DLMS/COSEM or Modbus communication stacks. EBI interface connects to external LCD controllers for meter displays, and the RTC plus low-power Wait modes extend battery life during brown-outs. Operating range -40 °C to +105 °C supports outdoor meter enclosures per IEC 62052.
推荐
Home & Building Automation Gateways
Wireless/wired protocol gateways benefit from the ATSAM4SA16CA-AN's combination of USB, UART, SPI, I²C, and 1 MB Flash for hosting a full TCP/IP + 6LoWPAN/Thread/Zigbee bridge stack. The Cortex-M4 at 120 MHz runs an RTOS (FreeRTOS) with Wi-Fi/BLE module drivers, while DMA channels manage simultaneous UART-bridged sensor data and Ethernet packet flows. The 128 KB SRAM supports TLS handshake buffers and TLS session caches; 79 GPIO drive status LEDs and front-panel keypads. Operating voltage 1.62 V to 3.6 V simplifies battery-backed RTC design.
推荐
Industrial PLC I/O & Sensor Aggregation
Modular PLC I/O slices and sensor aggregation nodes use the ATSAM4SA16CA-AN to consolidate many field signals through its 16-channel 12-bit ADC, multiple SPI/I²C ports, and UART bridges. The Cortex-M4 runs ladder-logic / IEC 61131-3 runtime, while 1 MB Flash stores configuration plus user programs and 128 KB SRAM buffers cyclic I/O images. Hardware PWM drives analog-output channels (4–20 mA loops via external DAC) and PWM-controlled actuator outputs. Industrial -40 °C to +105 °C range, 3.3 V supply tolerance, and watchdog/POR suit IEC 61131-2 industrial-control environments.
推荐
推荐产品汇总
工程参考数据： ATSAM4SA16CA-AN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAM4SA16CA-ANR | ATSAM4SA16BA-AUR | ATSAM4SA16BB-ANR | ATSAM4S8CA-CFN | ATSAM4S8CA-AU |
|---|---|---|---|---|---|---|
| Package | 100-LQFP (AN) | 100-LQFP (ANR) — same | 100-LQFP (AUR) — same | 100-LQFP (ANR) — same | 100-TFBGA (CFN) — different | 100-LQFP (AU) — same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4 + FPU | ARM Cortex-M4 + FPU | ARM Cortex-M4 + FPU | ARM Cortex-M4 + FPU | ARM Cortex-M4 + FPU | ARM Cortex-M4 + FPU |
| Flash Memory | 1024 KB (1 MB) | 1024 KB | 1024 KB | 1024 KB | 512 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| Max Clock Speed | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Operating 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 |
| Operating Temperature | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +105 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| USB 2.0 FS | Yes (integrated) | Yes | Yes | Yes | Yes | Yes |
| GPIO Count | 79 | 79 | 79 | 79 | 79 | 79 |
关键差异点
- 1 MB Flash + 128 KB SRAM in 100-LQFP for full industrial MCU+USB+CAN designs （对比 ATSAM4S8CA-CFN)
- Higher operating temperature rating for harsher environments （对比 ATSAM4S8CA-CFN)
- Identical electrical specification across LQFP package variations （对比 ATSAM4S16CA-CU)
- On-chip full-speed USB 2.0 with integrated transceiver （对比 DSPIC30F4011-20I/ML)
设计说明
The ATSAM4SA16CA-AN integrates a 1.8 V core LDO fed from VDDIN (1.62 V to 3.6 V) and a separate VDDIO rail for IO buffers. Place a 1 µF X7R ceramic + 4.7 µF bulk capacitor on VDDIN (pin 16), and 100 nF + 4.7 µF on VDDOUT (pin 5) and each VDDIO pin (51, 77). Estimated: at 120 MHz active mode the core draws ≈ 24 mA from VDDOUT, plus ≈ 5 mA per switching GPIO bank; bypass accordingly. Brown-out reset (POR) is enabled by default; do not disable BOD in firmware for safety-critical applications.
Route the LQFP-100 package with 4-layer stack-up: top signal, inner-1 ground pour, inner-2 3.3 V pour, bottom signal. Keep ADC traces (PB25–PB28 / PA17–PA20 / AD0–AD15) routed orthogonally away from PWM outputs to avoid switching-noise coupling into analog samples. Add a 1.5 nF + 100 nF RC network on VREFP (pin 6) right at the pin; long VREF traces cause gain error. Match XIN/XOUT trace lengths within 2 mm and guard the 8–12 MHz crystal with a ground ring.
Estimated: a frequent firmware pitfall is failing to enable the PMC main oscillator before switching Core Clock to PLL — the core then halts and the watchdog (WDT) must trigger a POR. Always: 1) enable XIN crystal, 2) wait for MOSCXTS, 3) switch to PLL with CKGR_PLLAR, 4) lock on PLL, 5) switch PMC_MCKR. Note that the SAM4S's USB clock requires a 48 MHz source; if your crystal is not 12 MHz you must use the PLL USB divisor to derive it, otherwise USB enumeration fails silently.
Estimated: at 120 MHz with all peripherals active the device draws ≈ 30 mA from a 3.3 V supply (~100 mW); in 100-LQFP (LFQFP) package the junction-to-ambient θJA ≈ 35 °C/W, so TJ rises ≈ 12 °C above ambient — well within the 105 °C industrial limit. However, in Wait mode with USB suspended power falls to ≈ 8 µA, so designers building battery-backed metering or sensor-hub nodes must disable unneeded peripherals (AFEC, SSC, PWM) via PMC_PCER1 to minimize sleep current.
USB D+/D− traces (pins 75, 76) must be 90 Ω differential, max length 50 mm, with a common-mode choke if the connector is more than 30 mm from the MCU. Series ferrite (600 Ω @ 100 MHz) on VDDIO + VDDIN improves conducted EMI. For SPI peripherals running above 25 MHz, add 22 Ω series resistors at MCU output to dampen ringing on long PCB traces (> 25 mm).
合规信息
Green compliant per Microchip SAM4S datasheet (MRL A). AEC-Q100 not specifically qualified at the device level for the SA16CA-AN part variant; for automotive-grade SAM4S the SAM3X family or ATSAMV71 are recommended. REACH status conforms to Microchip product-page disclosure.
