ATSAM4S2BB-ANR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip
MPN: ATSAM4S2BB-ANR ✓ Hoạt độngATSAM4S2BB-ANR Tóm tắt
A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals such as UART, SPI, I2C, ADC, timers, and USB. Within the power-management hierarchy of embedded systems, an MCU replaces multi-chip processor-plus-peripheral solutions and sits below application processors in complexity. The SAM4S series belongs to Microchip (formerly Atmel) ARM-based flash MCU portfolio, positioned for cost-sensitive industrial and consumer control applications.
Key differentiating features include DSP instructions and a Thumb-2 instruction set on the Cortex-M4 core, a Memory Protection Unit (MPU), Flash with ECC, Security Bit and Lock Bits for code protection, and a full-speed USB Device port with embedded transceiver. The Flash accelerator with cache sustains near-zero-wait-state execution at 120 MHz.
Technically, the SAM4S2B combines the Cortex-M4 pipeline with a multi-layer bus matrix and peripheral DMA (PDC) channels, allowing USART, SPI and ADC transfers without CPU intervention. Peripherals include up to 2 UARTs/USARTs, SPI, TWI (I2C), 2-channel 12-bit ADC, PWM channels, and a real-time clock with battery backup domain. The series is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N and legacy SAM7S devices in 48-, 64- and 100-pin versions, providing a migration path for Flash-size and feature upgrades without PCB redesign.
Typical applications include industrial control and automation nodes, consumer appliances, metering systems, motor control with PWM peripherals, and USB-connected embedded devices. The 180 uA backup-mode consumption suits battery-backed metering, while the DSP instructions accelerate filtering and control-loop algorithms.
Design consideration: the 1.62 V to 3.6 V supply requires a stable 3.3 V rail with proper VDDCORE/VDDOUT decoupling per the regulator architecture; use the ERASE pin carefully to avoid accidental Flash bulk erase during production.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATSAM4S2BB-ANR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAM4S2BB-ANR (cùng hình factor và footprint) — khác nhau ở Maximum Clock Frequency, Core Processor, Package, Program Memory Size, RoHS Status.
ATSAM4S2BA-AN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM4S2BB-AN
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAM4S4BB-ANR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAM4S8BB-ANR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM3S4BA-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4S2BB-ANR Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4 |
| Bề rộng đường dữ liệu | 32 bit |
| Tần số xung maksimum | 120 MHz |
| Program Memory Size | 128 KB FLASH |
| Program Memory Type | Flash (ECC, Security Bit, Lock Bits) |
| SRAM Size | 64 KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Backup Mode Power Consumption | 180 uA |
| DSP Instructions | Yes (Thumb-2, DSP extensions) |
| Memory Protection Unit | Yes (MPU) |
| USB | Full-Speed USB Device port with embedded transceiver |
| Hộp / Vỏ | LQFP-64 (10 x 10 mm) |
| Kiểu lắp đặt | SMD/SMT |
| Temperature Grade | Industrial |
| Terminal Form | Gull Wing |
| Number of Terminals | 64 |
| Series | SAM4S |
| RoHS | Compliant (Y) |
Cấu hình chân ATSAM4S2BB-ANR
| Chân 1 | PA07 — Parallel I/O port A, pin 7 |
| Chân 2 | PA08 — Parallel I/O port A, pin 8 |
| Chân 3 | PA09 — Parallel I/O port A, pin 9 |
| Chân 4 | PA10 — Parallel I/O port A, pin 10 |
| Chân 5 | PA11 — Parallel I/O port A, pin 11 |
| Chân 6 | PA12 — Parallel I/O port A, pin 12 |
| Chân 7 | PA13 — Parallel I/O port A, pin 13 |
| Chân 8 | PA14 — Parallel I/O port A, pin 14 |
| Chân 9 | PA15 — Parallel I/O port A, pin 15 |
| Chân 10 | PA16 — Parallel I/O port A, pin 16 |
| Chân 11 | PA17 — Parallel I/O port A, pin 17 |
| Chân 12 | PA18 — Parallel I/O port A, pin 18 |
| Chân 13 | PA19 — Parallel I/O port A, pin 19 |
| Chân 14 | PA20 — Parallel I/O port A, pin 20 |
| Chân 15 | PA21 — Parallel I/O port A, pin 21 |
| Chân 16 | GND — Ground |
| Chân 17 | VDDIO — I/O power supply |
| Chân 18 | PA22 — Parallel I/O port A, pin 22 |
| Chân 19 | PA23 — Parallel I/O port A, pin 23 |
| Chân 20 | PA24 — Parallel I/O port A, pin 24 |
| Chân 21 | PA25 — Parallel I/O port A, pin 25 |
| Chân 22 | PA26 — Parallel I/O port A, pin 26 |
| Chân 23 | PA27 — Parallel I/O port A, pin 27 |
| Chân 24 | PA28 — Parallel I/O port A, pin 28 |
| Chân 25 | PA29 — Parallel I/O port A, pin 29 |
| Chân 26 | PA30 — Parallel I/O port A, pin 30 |
| Chân 27 | PA31 — Parallel I/O port A, pin 31 |
| Chân 28 | PB00 — Parallel I/O port B, pin 0 |
| Chân 29 | PB01 — Parallel I/O port B, pin 1 |
| Chân 30 | PB02 — Parallel I/O port B, pin 2 |
| Chân 31 | PB03 — Parallel I/O port B, pin 3 |
| Chân 32 | PB04 — Parallel I/O port B, pin 4 |
| Chân 33 | PB05 — Parallel I/O port B, pin 5 |
| Chân 34 | PB06 — Parallel I/O port B, pin 6 |
| Chân 35 | PB07 — Parallel I/O port B, pin 7 |
| Chân 36 | PB08 — Parallel I/O port B, pin 8 |
| Chân 37 | PB09 — Parallel I/O port B, pin 9 |
| Chân 38 | PB10 — Parallel I/O port B, pin 10 |
| Chân 39 | PB11 — Parallel I/O port B, pin 11 |
| Chân 40 | PB12 — Parallel I/O port B, pin 12 |
| Chân 41 | PB13 — Parallel I/O port B, pin 13 |
| Chân 42 | GND — Ground |
| Chân 43 | VDDIO — I/O power supply |
| Chân 44 | VDDBU — Backup power supply |
| Chân 45 | GNDBU — Backup ground |
| Chân 46 | XIN32 — 32.768 kHz crystal input |
| Chân 47 | XOUT32 — 32.768 kHz crystal output |
| Chân 48 | VDDANA — Analog power supply |
| Chân 49 | GNDANA — Analog ground |
| Chân 50 | AD0 — ADC channel 0 / I/O |
| Chân 51 | AD1 — ADC channel 1 / I/O |
| Chân 52 | AD2 — ADC channel 2 / I/O |
| Chân 53 | AD3 — ADC channel 3 / I/O |
| Chân 54 | XIN — Main crystal input |
| Chân 55 | XOUT — Main crystal output |
| Chân 56 | VDDPLL — PLL power supply |
| Chân 57 | VDDCORE — Core power supply (regulated) |
| Chân 58 | VDDOUT — Regulator output (external capacitor) |
| Chân 59 | VDDIN — Regulator input power supply |
| Chân 60 | ERASE — Flash bulk erase (active high) |
| Chân 61 | NRST — Bidirectional reset (open-drain) |
| Chân 62 | TEST — Test mode pin (tie to GND in application) |
| Chân 63 | TDO — JTAG test data output / SWO |
| Chân 64 | TDI — JTAG test data input |
Ứng dụng tiêu biểu
ATSAM4S2BB-ANR phù hợp cho 6 Áp dụngs: Industrial Control and Automation, USB-Connected Embedded Devices, Metering and Battery-Backed Systems, Motor Control, Consumer Appliances, Legacy SAM7S/SAM3S Migration.
Industrial Control and Automation
The ATSAM4S2BB-ANR fits industrial control nodes because its 120 MHz Cortex-M4 core with DSP instructions executes PID control loops and digital filtering in real time, while the 12-bit ADC and PWM peripherals directly drive actuators and read sensors. USART, SPI and TWI interfaces connect PLC I/O modules, HMI panels and fieldbus transceivers over RS-485. The industrial temperature rating and Flash ECC ensure reliability in electrically noisy factory environments. Peripheral DMA channels move ADC and UART data without CPU load, keeping interrupt latency low for deterministic control. Its 1.62 V to 3.6 V operation simplifies integration on standard 3.3 V industrial logic rails.
Được đề xuất
USB-Connected Embedded Devices
With its full-speed USB Device port and embedded transceiver, the ATSAM4S2BB-ANR implements USB HID, CDC, or vendor-specific classes without an external PHY, reducing BOM cost in PC-connected instruments, programmers and peripherals. The 120 MHz core sustains USB throughput while running the application stack, and 128 KB Flash accommodates the USB stack plus application code. VBUS sensing and the USB-specific power pins simplify bus-powered designs. Compared with external-PHY solutions, the embedded transceiver cuts board area in the 10 x 10 mm LQFP-64 footprint, and the Flash accelerator keeps code execution efficient during interrupt-driven USB transfers.
Được đề xuất
Metering and Battery-Backed Systems
The ATSAM4S2BB-ANR suits energy and utility metering because the SAM4S2B consumes only 180 uA in backup mode per the Microchip product page, allowing the RTC and backup registers to run from a small battery between measurement cycles. The 12-bit ADC samples current and voltage channels, while DSP instructions perform FFT and RMS computation for power-quality metrics. Flash Security Bit and Lock Bits protect calibration data and billing firmware from tampering. The industrial temperature rating supports outdoor meter enclosures, and the RTC backup domain provides timestamping for load-profile logging on the 3.3 V supply.
Được đề xuất
Motor Control
For motor control, the ATSAM4S2BB-ANR combines its PWM peripherals with the 120 MHz Cortex-M4 DSP extensions to implement field-oriented control (FOC) and space-vector modulation for BLDC and PMSM drives. The 12-bit ADC synchronized to PWM triggers samples phase currents at the switching midpoint, minimizing ripple error, and peripheral DMA transfers results without CPU intervention. Thumb-2 DSP instructions execute the Clarke/Park transforms and PI loops within a single PWM period. The industrial temperature package suits drive electronics mounted near motors, and 3.3 V logic interfaces directly to gate-driver ICs over the full 1.62 V to 3.6 V supply range.
Được đề xuất
Consumer Appliances
Consumer appliance controllers benefit from the ATSAM4S2BB-ANR's balance of cost and performance: 128 KB Flash holds touch-decoding, display and communication firmware, while the 64 KB SRAM buffers graphics and protocol data. PWM outputs drive backlight, buzzer and fan control; the ADC reads buttons, temperature sensors (NTC) and mains-synchronization signals. The RoHS-compliant green LQFP-64 package meets consumer environmental requirements, and the Flash Lock Bits protect OEM firmware from cloning. UART and TWI connect to WiFi or BLE modules for smart-appliance connectivity, and the 120 MHz core leaves headroom for OTA firmware-update processing.
Được đề xuất
Legacy SAM7S/SAM3S Migration
The ATSAM4S2BB-ANR is the designated migration target for legacy Atmel SAM7S and SAM3S designs: the SAM4S series datasheet explicitly documents pin-to-pin compatibility with SAM3N, SAM3S, SAM4N and SAM7S devices in 64-pin versions, so an existing PCB accepts the SAM4S2BB without layout changes. Designers gain the Cortex-M4 DSP instructions, Flash ECC, cache accelerator and USB Device port as drop-in benefits, typically doubling effective throughput at the same 120 MHz-class clocking. Because peripheral registers follow the same Atmel heritage, firmware ports are largely incremental, making the SAM4S2BB the lowest-risk upgrade path for end-of-life legacy stock.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAM4S2BB-ANR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAM4S2BA-AN | ATSAM4S2BB-AN | ATSAM4S4BB-ANR | ATSAM4S8BB-ANR | ATSAM3S4BA-AU |
|---|---|---|---|---|---|---|
| Package | LQFP-64 (10x10) | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same | LQFP-64 (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M3 |
| Pin-to-Pin Compatible with SAM4S2BB | Reference | Yes | Yes | Yes | Yes | Yes (per SAM4S datasheet) |
Bảo phân biệt quan trọng
- Lowest Flash in pin-compatible SAM4S LQFP-64 family - lowest cost (vsATSAM4S8BB-ANR)
- Cortex-M4 DSP instructions vs Cortex-M3 predecessor (vsATSAM3S4BA-AU)
- 180 uA backup mode for battery-backed designs (vsATSAM4S4BB-ANR)
Ghi chú thiết kế
The SAM4S2B integrates an internal voltage regulator: connect VDDIN to the 3.3 V rail, place the required external capacitor on VDDOUT, and decouple VDDCORE locally per the SAM4S datasheet power section. Separate VDDPLL and VDDANA domains with individual 100 nF capacitors plus bulk decoupling, and connect GNDANA to a quiet analog ground star point for ADC accuracy. Estimated: at 3.3 V and typical active current in the tens of mA range, keep the regulator input within the 1.62 V to 3.6 V absolute range under all load transients.
The ERASE pin actively bulk-erases Flash when driven high - terminate it to ground (through a pulldown as recommended in the datasheet) to prevent accidental code loss from ESD or test-probe contact during production. Tie the TEST pin low in the application. NRST is open-drain and bidirectional: include an external pull-up and ensure external reset controllers do not drive it high. Verify the correct JTAG/SWD pin multiplexing before layout freeze, since PA-pin alternate functions must match your debugger.
Keep crystal circuits (XIN/XOUT and XIN32/XOUT32) with short traces, ground guarding, and load capacitors chosen from the crystal datasheet - Microchip's SAM4S application notes specify oscillator startup margins. Route USB D+/D- as a 90-ohm differential pair matched within a few mm to the LQFP-64 USB pins with a common-mode choke optional for EMI. Segregate the analog ADC channel traces from PWM and clock lines to preserve the 12-bit ADC noise floor. Provide at least a solid ground plane under the 10 x 10 mm LQFP-64 footprint.
Since the SAM4S series is pin-to-pin compatible with SAM3S/SAM4N/SAM7S 64-pin devices, design the PCB footprint to the generic LQFP-64 land pattern so future Flash-size upgrades (SAM4S4BB/SAM4S8BB) are solder-in replacements. Reserve the ERASE and NRST test points on the PCB for in-system programming and recovery, and expose SWD pins on a standard debug connector for Atmel-ICE or SAM-ICE programmers.
Thông tin tuân thủ
RoHS: Y per omo-ic.com and Radwell distributor data; Mouser lists the part as LQFP GREEN industrial temp MRL B. REACH, halogen-free and conflict-minerals declarations should be confirmed on the Microchip product compliance page.
