ATSAM4S16BA-MU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
MPN： ATSAM4S16BA-MU ✓ 啟用中ATSAM4S16BA-MU 概覽
A flash microcontroller (MCU) integrates a processor core, program memory, data memory, and peripherals on a single die, forming the complete control engine of an embedded system. Within the power management hierarchy of embedded design, an MCU sits above discrete logic and below application processors: it executes deterministic real-time control loops, manages communication peripherals, and handles signal processing workloads such as those enabled by the Cortex-M4 DSP instruction set.
Key differentiating features of the ATSAM4S16BA-MU include a 2 Kbytes instruction cache that sustains near-zero-wait-state execution from Flash at 120 MHz, a Memory Protection Unit (MPU) for robust task isolation, a DSP instruction set with Thumb-2 encoding for efficient signal processing, and dual-bank Flash with ECC, Security Bit, and lock regions enabling safe in-application firmware updates. The multi-layer bus matrix and multi-channel DMA support high data-rate communication without CPU bottlenecking.
Architecturally, the device is built on the high-performance ARM Cortex-M4 core and integrates Atmel/Microchip Flash read accelerator technology. The dual-bank memory organization allows one bank to execute code while the other is erased or programmed, a critical capability for field-upgradable industrial products that cannot tolerate downtime. ECC on Flash protects against single-bit errors in noisy environments.
Typical applications include industrial control and automation nodes, consumer appliances, PC peripherals, and portable data-acquisition instruments. The 200 uA/MHz efficiency and wide 1.62V to 3.6V supply range also suit battery-powered designs that still need DSP-grade throughput.
When designing with this MCU, budget the power architecture around the 1.62V to 3.6V supply window and exploit the pin-to-pin compatibility with SAM3N/SAM3S/SAM4N/SAM7S (64- and 100-pin versions) to simplify migration; verify USB and peripheral count differences before swapping families.
This page synthesizes distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not found in the manufacturer datasheet, as of 2026-09-20.
直接替換替代品，適用於 ATSAM4S16BA-MU — 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： ATSAM4S16BA-MU （相同外形與佔位） — 差異在於 Package, Instruction Set, Operating Temperature, RoHS Status, Core Size.
ATSAM4SA16BA-MU
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM4S16CA-MU
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM4SD32BA-MU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S8BA-MU
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAM4N16BA-MU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S16BA-MU 最大額定值與電氣特性
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-bit |
| 最大時脈頻率 | 120 MHz |
| Cache | 2 Kbytes |
| Flash Memory Size | 1 MB (1M x 8), dual-bank with ECC |
| SRAM Size | 128 KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Power Consumption | 200 uA/MHz |
| Instruction Set | Thumb-2, DSP instruction set |
| Memory Protection Unit | Yes (MPU) |
| Security Features | Flash Security Bit, Flash Lock regions |
| 封裝 | 64-QFN (9x9 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial) |
| Pin Compatibility | SAM3N, SAM3S (64/100-pin), SAM4N, SAM7S (64-pin) |
| Life Cycle Stage | ACTIVE |
ATSAM4S16BA-MU 64-qfn (9x9 mm) 腳位配置指南
ATSAM4S16BA-MU（64-qfn (9x9 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAM4S16BA-MU.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM4S16BA-MU 適用於 6 應用s: Industrial Control and Automation, Consumer Appliances and White Goods, PC Peripherals, Portable Data-Acquisition Instruments, Motor Control and Drives, IoT Sensor Nodes and Edge Devices.
Industrial Control and Automation
The ATSAM4S16BA-MU fits industrial control nodes that need deterministic real-time performance and field firmware updates. The 120 MHz Cortex-M4 with 2 Kbytes cache sustains tight control loops, while Flash ECC, Security Bit, and lock regions protect code integrity in electrically noisy factory environments from -40C to +85C. Its dual-bank 1 MB Flash allows one bank to run live control firmware while the second bank receives updates over CAN-class or serial links, eliminating downtime. With a 1.62V to 3.6V supply and about 200 uA/MHz consumption, it also suits remote I/O modules on constrained power budgets. Multi-channel DMA offloads peripheral transfers so the CPU core remains dedicated to the control algorithm and communication protocol stacks.
推薦
Consumer Appliances and White Goods
Appliance controllers benefit from the ATSAM4S16BA-MU combination of low cost, industrial temperature tolerance, and sufficient processing headroom for user interfaces and motor-assist algorithms. The 1.62V to 3.6V supply range simplifies power design from mains-derived or battery-backed rails, and the 64-pin QFN (9x9 mm) footprint keeps the PCB compact. The DSP instruction set accelerates touch-decoding, audio feedback, and sensor filtering at 120 MHz without a second processor. Dual-bank Flash with ECC enables safe OTA-style firmware updates via service tools, while the MPU helps isolate safety-relevant tasks from UI code. Pin compatibility with SAM3N/SAM3S 64-pin parts allows cost-down migrations mid-product-cycle without a board respin, protecting appliance platforms with long production lives.
推薦
PC Peripherals
PC peripheral devices such as input devices, hubs, and accessory controllers use the ATSAM4S16BA-MU for its USB-class throughput and DMA-driven data paths. The multi-layer bus matrix and multi-channel DMA sustain high data-rate communication between peripherals and memory without CPU stalls, which matters for sustained streaming workloads. The 120 MHz Cortex-M4 with DSP instructions handles protocol processing, encryption-lite tasks, and HID latency budgets comfortably. Operating at 200 uA/MHz from a 3.3V USB-derived rail keeps the bus-power budget compliant. The Flash read accelerator with cache ensures consistent execution from internal 1 MB Flash even during interrupt-heavy traffic. The industrial -40C to +85C rating comfortably covers the 0C to +70C environment typical of desktop peripherals with margin.
推薦
Portable Data-Acquisition Instruments
Handheld data loggers and measurement instruments exploit the ATSAM4S16BA-MU's 200 uA/MHz efficiency and wide 1.62V to 3.6V input range, allowing direct operation from two alkaline cells or a single Li-ion cell across its discharge curve. The Cortex-M4 DSP instruction set performs in-line filtering, windowing, and FFT analysis of ADC streams at 120 MHz, enabling real-time spectrum display without offloading to a host. The 1 MB dual-bank Flash stores calibration tables and logged datasets while ECC protects records against bit errors over years of battery-powered storage. The 64-QFN (9x9 mm) package fits compact handheld enclosures, and SRAM of 128 KB buffers acquisition bursts between communication sessions over USB or UART.
推薦
Motor Control and Drives
Small motor drives use the ATSAM4S16BA-MU's 120 MHz core and DSP instructions for field-oriented control mathematics, including the single-cycle MAC operations needed by Clark/Park transforms and PI current loops executed at tens of kilohertz. Timer resources clocked from the core generate complementary PWM with dead-time insertion, while the multi-channel DMA moves ADC current-sample results into memory without jitter-inducing CPU intervention. Flash ECC ensures the control firmware remains bit-exact despite switching noise, a real risk in inverter environments. The 2 Kbytes cache plus Flash accelerator keep loop timing deterministic. At 200 uA/MHz, standby and light-load power stays low for fan and pump applications subject to energy-efficiency regulations.
推薦
IoT Sensor Nodes and Edge Devices
IoT edge nodes pair the ATSAM4S16BA-MU with radio modules where local signal preprocessing reduces uplink traffic. The DSP instruction set at 120 MHz executes compression, thresholding, and lightweight analytics locally, while 1 MB dual-bank Flash supports secure over-the-air firmware update with rollback, protected by the Security Bit and ECC. Active power of about 200 uA/MHz combined with low-power modes extends battery life in duty-cycled deployments. The industrial -40C to +85C operating range covers outdoor and unconditioned enclosures. Pin compatibility across the SAM4S/SAM4N/SAM3S 64-pin families lets a single PCB design scale from 512 KB cost-optimized SKUs to 1 MB feature-rich SKUs, simplifying logistics across IoT product tiers and regional variants.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4S16BA-MU — 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 | ATSAM4SA16BA-MU | ATSAM4S16CA-MU | ATSAM4SD32BA-MU | ATSAM4S8BA-MU | ATSAM4N16BA-MU |
|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Clock | Cortex-M4 @ 120 MHz | Cortex-M4 @ 120 MHz | Cortex-M4 @ 120 MHz | Cortex-M4 @ 120 MHz | Cortex-M4 @ 120 MHz | Cortex-M4 @ 120 MHz |
| Flash | 1 MB dual-bank, ECC | 1 MB | 1 MB | 1 MB dual-bank oriented | 512 KB | 1 MB |
| SRAM | 128 KB | 128 KB | 128 KB | 160 KB | 128 KB | 128 KB |
| 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 |
| Peripheral Set | Full S-series (USB, DMA, timers) | S-series, cache-only acceleration | CA peripheral-set variant | S-series | S-series | N-series, simplified peripherals |
| Pin Compatibility | SAM3N/SAM3S/SAM4N/SAM7S 64-pin | Pin-to-pin with ATSAM4S16BA-MU | Pin-to-pin with ATSAM4S16BA-MU | Pin-to-pin with ATSAM4S16BA-MU | Pin-to-pin with ATSAM4S16BA-MU | Pin-to-pin with ATSAM4S16BA-MU |
主要差異化特點
- Full 1 MB Flash with ECC and dual-bank update capability (對比ATSAM4S8BA-MU)
- Full S-series peripheral richness (對比ATSAM4N16BA-MU)
- Balanced memory-map with cache plus Flash accelerator (對比ATSAM4SA16BA-MU)
設計說明
Design the supply for the 1.62V to 3.6V window with a single 3.3V LDO or buck output. Estimated: at 120 MHz and 200 uA/MHz, core active current is roughly 24 mA before I/O and peripheral loads, so size the regulator for at least 50-80 mA total with margin for GPIO drive and Flash programming current. Place 100 nF ceramic decoupling on every VDD/VDDIO pin pair plus one 4.7-10 uF bulk capacitor near the 64-QFN. The datasheet family document (60001419B) specifies brown-out and supply monitoring behavior - enable the brown-out detector for Flash-write safety.
The 64-QFN (9x9 mm) exposed-pad package requires a well-designed land pattern with via array under the pad to ground for heat spreading and signal return. Flash programming, debugging (SWD), and USB differential pairs should be routed short and matched if USB-class communication is used. Follow Microchip SAM4S family layout guidance: keep crystal load capacitors within 2 mm of the oscillator pins and guard them with ground pour to minimize jitter on the 120 MHz system clock.
Migrating from SAM3S or SAM7S legacy parts exploits pin compatibility, but verify peripheral register maps and clock-tree differences before reusing firmware - SAM4S adds the cache, MPU, and DMA topology changes. Do not assume the N-series variant (ATSAM4N16BA) is fully peripheral-identical; it omits some S-series peripherals. For in-application programming, respect the dual-bank Flash erase granularity and lock regions to avoid bricking the active bank during updates.
合規資訊
Mouser listing describes the part as QFN, GREEN, IND TEMP, MRL A - the GREEN designation suggests Microchip's standard green/RoHS packaging flow, but explicit RoHS/REACH status must be confirmed from the Microchip product compliance page.
