ATSAM4S8BB-MN - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip (Tape & Reel)
MPN： ATSAM4S8BB-MN ✓ 啟用中ATSAM4S8BB-MN 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers -> embedded ICs -> integrated circuits. ARM Cortex-M4 cores specifically add single-precision floating-point and DSP instructions, making them suitable for signal-processing tasks that would otherwise require a separate DSP chip.
The SAM4S8 differentiates itself with single-cycle hardware multiplier, Memory Protection Unit (MPU), embedded Flash with Error Correction Code (ECC), security bit, and lock bits for firmware protection. The device operates from 1.62 V to 3.6 V and delivers active power consumption of 200 µA/MHz, allowing battery-powered and energy-conscious designs. Integrated peripherals include a high-speed USB 2.0 Full-Speed device, multiple USART/UART, SPI, TWI (I²C-compatible), I²S, an 8-channel 10-bit ADC, a 16-bit PWM timer counter block, and a Real-Time Clock with calendar mode.
Architecturally, the SAM4S8 leverages a 3-stage pipeline with branch speculation and Thumb-2 instruction set, achieving 1.25 DMIPS/MHz. The Cortex-M4 single-precision FPU and DSP extensions accelerate FIR/IIR filters, FFTs, and PID loops without burdening the main CPU, which is valuable in motor control, audio, and sensor-fusion applications.
Typical applications include industrial control and HMI panels, smart energy metering, USB-connected peripherals, point-of-sale terminals, motor-control BLDC/PMSM drives, building automation gateways, and consumer audio devices. The 105 °C junction rating also supports outdoor and harsh-environment deployments.
When designing with the SAM4S8, pay attention to decoupling (100 nF + 4.7 µF near each VDD pin), JTAG/SWD trace length, and exposed-pad soldering for thermal dissipation. Use Microchip's Atmel Studio/Microchip Studio and ASF drivers to accelerate peripheral bring-up.
This page synthesizes distributor pricing, drop-in compatible SAM4S-family alternatives, and practical design notes not bundled in the manufacturer datasheet.
直接替換替代品，適用於 ATSAM4S8BB-MN — 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： ATSAM4S8BB-MN （相同外形與佔位） — 差異在於 Package, Operating Temperature, SRAM, RoHS Status, Active Power Consumption.
ATSAM4S4BB-MNR
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S16BB-MNR
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S8BA-MU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S8BB-MUR
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S8CB-MNR
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S8BB-MN 最大額定值與電氣特性
| Core | ARM Cortex-M4 with FPU and DSP extensions |
| 最大時脈頻率 | 120 MHz |
| Program Memory (Flash) | 512 KB |
| SRAM | 128 KB |
| Supply Voltage (VDD) | 1.62 V to 3.6 V |
| Active Power Consumption | 200 µA/MHz |
| 工作溫度 | -40 °C to +105 °C (extended) |
| 封裝 | 64-pin QFN (9x9 mm) with exposed pad |
| 安裝類型 | Surface Mount |
| USB | USB 2.0 Full-Speed Device |
| ADC | 8-channel 10-bit |
| PWM Channels | 16-bit, multi-channel |
| Communication | USART, SPI, TWI (I²C), I²S |
| Memory Protection | MPU, Flash ECC, Lock Bits, Security Bit |
| RoHS 狀態 | Compliant |
ATSAM4S8BB-MN 腳位配置
| 腳位 1 | VDDIO — I/O supply voltage |
| 腳位 2 | PA0 — GPIO / WKUP0 |
| 腳位 3 | PA1 — GPIO / XIN |
| 腳位 4 | PA2 — GPIO / XOUT |
| 腳位 5 | PA3 — GPIO / AD0 |
| 腳位 6 | PA4 — GPIO / AD1 |
| 腳位 7 | PA5 — GPIO / AD2 |
| 腳位 8 | PA6 — GPIO / AD3 |
| 腳位 9 | PA7 — GPIO / AD4 |
| 腳位 10 | PA8 — GPIO / AD5 |
| 腳位 11 | PA9 — GPIO / URXD0 |
| 腳位 12 | PA10 — GPIO / UTXD0 |
| 腳位 13 | PA11 — GPIO / NPCS0 |
| 腳位 14 | PA12 — GPIO / MISO |
| 腳位 15 | PA13 — GPIO / MOSI |
| 腳位 16 | PA14 — GPIO / SPCK |
| 腳位 17 | VDDCORE — Core supply (1.2 V typical) |
| 腳位 18 | GND — Ground |
| 腳位 19 | PB0 — GPIO / PWM0 |
| 腳位 20 | PB1 — GPIO / PWM1 |
| 腳位 21 | PB2 — GPIO |
| 腳位 22 | PB3 — GPIO |
| 腳位 23 | PB4 — GPIO |
| 腳位 24 | PB5 — GPIO |
| 腳位 25 | PB6 — GPIO |
| 腳位 26 | PB7 — GPIO |
| 腳位 27 | PB8 — GPIO |
| 腳位 28 | PB9 — GPIO |
| 腳位 29 | PB10 — GPIO |
| 腳位 30 | PB11 — GPIO |
| 腳位 31 | PB12 — GPIO |
| 腳位 32 | PB13 — GPIO |
| 腳位 33 | PB14 — GPIO |
| 腳位 34 | VDDIO — I/O supply voltage |
| 腳位 35 | PC0 — GPIO / AD6 |
| 腳位 36 | PC1 — GPIO / AD7 |
| 腳位 37 | PC2 — GPIO |
| 腳位 38 | PC3 — GPIO |
| 腳位 39 | PC4 — GPIO |
| 腳位 40 | PC5 — GPIO |
| 腳位 41 | PC6 — GPIO |
| 腳位 42 | PC7 — GPIO |
| 腳位 43 | PC8 — GPIO |
| 腳位 44 | PC9 — GPIO |
| 腳位 45 | PC10 — GPIO |
| 腳位 46 | PC11 — GPIO |
| 腳位 47 | PC12 — GPIO |
| 腳位 48 | PC13 — GPIO |
| 腳位 49 | PC14 — GPIO |
| 腳位 50 | PC15 — GPIO |
| 腳位 51 | PD0 — GPIO |
| 腳位 52 | PD1 — GPIO |
| 腳位 53 | PD2 — GPIO |
| 腳位 54 | PD3 — GPIO |
| 腳位 55 | PD4 — GPIO |
| 腳位 56 | PD5 — GPIO |
| 腳位 57 | PD6 — GPIO |
| 腳位 58 | PD7 — GPIO |
| 腳位 59 | PD8 — GPIO |
| 腳位 60 | PD9 — GPIO |
| 腳位 61 | NRST — Reset input, active low |
| 腳位 62 | TST — Test mode, connect to GND in production |
| 腳位 63 | JTAGSEL — JTAG selection, sampled at reset |
| 腳位 64 | GND — Ground |
典型應用
ATSAM4S8BB-MN 適用於 6 應用s: Industrial Control and HMI Panels, USB-Connected Peripherals, Smart Energy Metering, BLDC and PMSM Motor Drives, Building Automation Gateways, Consumer Audio Devices.
Industrial Control and HMI Panels
The ATSAM4S8BB-MN's 120 MHz Cortex-M4 with hardware FPU and 512 KB Flash comfortably runs LVGL or emWin graphical stacks on TFT displays for industrial HMI panels. Its -40 to +105 °C extended temperature grade allows deployment in factory floors, outdoor kiosks, and cabinet-mounted operator interfaces. The on-chip 16-bit PWM, 10-bit ADC, and USART/SPI/TWI peripherals connect directly to motor drivers, sensors, and keypad scanners, while the MPU and Flash lock bits protect against firmware tampering in fielded equipment.
推薦
USB-Connected Peripherals
With an integrated USB 2.0 Full-Speed device controller and on-chip transceiver, the ATSAM4S8BB-MN is ideal for HID input devices, CDC virtual COM ports, USB audio class DACs, and MSD data loggers. The 128 KB SRAM buffers USB isochronous audio streams up to 48 kHz/24-bit, while 512 KB Flash holds USB stacks (e.g., LUFA, ASF USB) plus application logic. Designers benefit from Microchip Studio USB class drivers that enumerate without external crystals, reducing BOM cost.
推薦
Smart Energy Metering
The ATSAM4S8BB-MN's 120 MHz performance with single-precision FPU executes real-time FFT-based harmonic analysis on AC mains signals for Class-1 smart energy meters. Its 8-channel 10-bit ADC samples current and voltage sensors simultaneously, while 16-bit PWM timers drive compensation circuits. AES hardware acceleration in the SAM4S family enables secure DLMS/COSEM communication, and Flash lock bits protect calibration constants from tampering in fielded metering equipment.
推薦
BLDC and PMSM Motor Drives
Field-oriented control (FOC) of BLDC and PMSM motors runs efficiently on the ATSAM4S8BB-MN thanks to its Cortex-M4 DSP extensions, which accelerate Clarke/Park transforms and SVM calculations within tight PWM cycles. The 16-bit PWM timer block supports complementary outputs with programmable dead-time insertion, while the on-chip 10-bit ADC synchronizes to PWM edges for low-noise current sampling. The 105 °C extended temperature range allows placement near motor FET bridges.
推薦
Building Automation Gateways
Building automation gateways using the ATSAM4S8BB-MN consolidate multiple field buses - RS-485 (Modbus), KNX, BACnet, and wireless sub-GHz links - through its multiple USART and SPI channels. The 128 KB SRAM sustains concurrent protocol stacks, while the 512 KB Flash holds gateway firmware and web configuration UI. The 1.62-3.6 V supply range simplifies integration with 3.3 V PoE-derived rails and battery-backed RTC circuits.
推薦
Consumer Audio Devices
The Cortex-M4 DSP instructions on the ATSAM4S8BB-MN run audio effects such as parametric EQ, dynamic range compression, and reverb at 48 kHz with low CPU overhead. Its I²S peripheral connects directly to external 24-bit DACs and ADCs, while 512 KB Flash stores preset banks and firmware. The 105 °C temperature rating supports sealed enclosures with limited airflow, and the integrated USB 2.0 enables USB audio class streaming from PCs and mobile devices.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4S8BB-MN — 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 | ATSAM4S4BB-MNR | ATSAM4S16BB-MNR | ATSAM4S8BA-MU | ATSAM4S8BB-MUR | ATSAM4S8CB-MNR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 |
| Core | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz | ARM Cortex-M4 120 MHz |
| Flash | 512 KB | 256 KB (-50%) | 1 MB (+100%) | 512 KB | 512 KB | 512 KB |
| SRAM | 128 KB | 64 KB (-50%) | 128 KB | 128 KB | 128 KB | 128 KB |
| Operating Temperature | -40 °C to +105 °C (extended) | -40 °C to +105 °C (extended) | -40 °C to +105 °C (extended) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +105 °C (extended) |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device + Ethernet MAC |
| 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 |
主要差異化特點
- 512 KB Flash in a 64-pin QFN with 105 °C extended temperature support (對比ATSAM4S4BB-MNR)
- Extended 105 °C junction temperature vs industrial 85 °C grade (對比ATSAM4S8BA-MU)
- Integrated USB 2.0 Full-Speed device with on-chip transceiver (對比ATSAM4N8CA-CUR)
- Pin-compatible upgrade path to 1 MB Flash within the SAM4S 64-pin family (對比ATSAM4S16BB-MNR)
設計說明
Place a 100 nF X7R 0402 ceramic decoupling capacitor on every VDDIO and VDDCORE pin, plus a bulk 4.7 µF X5R near the exposed pad. Estimated: with 120 MHz active operation drawing 24 mA (200 µA/MHz × 120 MHz) plus peripheral current, a 1 µH ferrite bead feeding VDDCORE helps isolate digital switching noise from the analog VDDIO rail used by the ADC reference.
The 64-QFN exposed pad is the primary thermal path. Solder it to a continuous copper plane with at least 4 thermal vias (0.3 mm drill) on the center pad to the inner ground plane. Estimated: at full 120 MHz with all peripherals active in a 9x9 mm QFN, the junction-to-ambient thermal resistance is approximately 35 C/W on a standard 4-layer JEDEC PCB, giving a 25 °C rise at typical 700 mW dissipation.
Route the SWD clock and data signals (TCK and TMS) as a length-matched differential pair under 50 mm with a ground reference on the layer below. Keep the 32.768 kHz crystal traces short and surrounded by ground pour to minimize crosstalk into the ADC input channels. Place the NRST pull-up (10 kΩ) and 100 nF cap within 5 mm of the pin to guarantee clean reset timing.
Do not leave the TST pin floating in production - tie it directly to GND. Leaving JTAGSEL floating can put the part into a non-functional boundary-scan mode after reset. Always program the GPNVM bits to enable the on-chip 32 kHz RC oscillator backup and Flash ECC before locking the security bit, otherwise brown-out recovery may fail.
For USB 2.0 Full-Speed, route the DP and DM lines as a 90 Ω differential pair with no stubs, and place the 47 nF USB VBUS decoupling capacitor within 3 mm of the VBUS pin. The ATSAM4S8BB-MN integrates the USB pull-up on DP, so no external pull-up is required. Always include TVS protection (e.g., USBLC6-2SC6) on DP/DM at the connector to pass IEC 61000-4-2 ESD tests.
合規資訊
RoHS and REACH compliant per Microchip product page. Industrial-grade part; not AEC-Q100 qualified. For automotive applications consult Microchip's eXtreme Switch (SAMV7x) or SAM4S automotive variants.
