ATSAM4SD32BA-ANR - 2MB Flash 120MHz Cortex-M4 MCU | Microchip
MPN： ATSAM4SD32BA-ANR ✓ 啟用中ATSAM4SD32BA-ANR 概覽
The SAM4S family is part of the Atmel/Microchip ARM Cortex-M4 microcontroller lineup. A Cortex-M4 MCU is a 32-bit processor core featuring DSP extensions, single-cycle MAC, hardware single-precision FPU, and a tightly-coupled NVIC for deterministic interrupt response. Within Microchip's portfolio it sits above Cortex-M0+ SAM D parts and below Cortex-M7 SAME70/SAMS70 parts, balancing high computational throughput (1.25 DMIPS/MHz, hardware FPU) with the peripheral richness needed for human-machine interface (HMI), connectivity bridges, and motor control front-ends.
Key features of the ATSAM4SD32BA-ANR include up to 120 MHz CPU clock, 2 MB embedded Flash, 160 KB SRAM, a 12-bit ADC, two 12-bit DACs, USB 2.0 Full-Speed Device/Host, CAN 2.0A/B, 10/100 Ethernet MAC (EMAC), HSMCI for SD cards, and 8/16-bit external bus interface (EBI) for SRAM/NOR/NAND. The Cortex-M4 core's single-precision FPU accelerates floating-point DSP code, while the integrated sleep modes (Wait, Sleep, Backup with RTC) reduce active power for battery-friendly designs. The 64-LQFP package exposes most peripheral I/Os while remaining hand-solderable for prototypes.
Typical applications include industrial HMI panels, HVAC controllers, USB peripherals and barcode scanners, point-of-sale terminals, smart metering, motor-control signal processors, building automation gateways, and connectivity bridges (USB-to-Ethernet, USB-to-CAN). The combination of 2 MB Flash and 160 KB SRAM supports rich graphic stacks (emWin, LVGL) without external memory.
When designing with this MCU, choose LQFP-64 over QFN-64 variants for easier rework and breadboard prototypes; route the ERASE pin carefully because pulling it high at reset triggers a full chip erase. Decouple VDDCORE with 100 nF + 4.7 µF ceramic capacitors placed within 5 mm of the pin, and reserve the JTAG/SWD header footprint even in production designs for firmware recovery.
直接替換替代品，適用於 ATSAM4SD32BA-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： ATSAM4SD32BA-ANR （相同外形與佔位） — 差異在於 USB, Package, RoHS Status, ADC, CAN.
ATSAM4SD32BB-AUR
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4SD32BA-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4SD32BA-AN
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S16CB-CFNR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM4SA16BA-AUR
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAM4S8BA-AU
✅ 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 →ATSAM4SD32BA-ANR 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M4 with FPU and DSP extensions |
| CPU Bit Width | 32-bit |
| Maximum CPU Clock | 120 MHz |
| DMIPS Performance | 1.25 DMIPS/MHz |
| Program Flash | 2 MB (2048 KB) |
| SRAM | 160 KB |
| Core Supply Voltage (VDDCORE) | 1.2 V (typ) |
| I/O Supply Voltage (VDDIO) | 1.62 V to 3.6 V |
| 工作溫度範圍 | -40 °C to +85 °C (industrial) |
| 封裝 | 64-pin LQFP |
| ADC | 12-bit, up to 16 channels |
| DAC | 2x 12-bit |
| USB | USB 2.0 Full-Speed Device/Host with on-chip transceiver |
| CAN | 1x CAN 2.0A/B |
| Ethernet | 10/100 Ethernet MAC (EMAC) with MII/RMII interface |
| MCI/SDIO | HSMCI for SD/SDIO cards |
| External Bus Interface (EBI) | 8/16-bit SRAM, NOR Flash, NAND Flash support |
| Timers | Multiple TC channels, PWM, RTT, RTC |
| Package Mounting Type | Surface Mount |
| MSL 等級 | 3 (per JEDEC J-STD-020) |
| RoHS Compliance | Compliant |
ATSAM4SD32BA-ANR 腳位配置
| 腳位 1 | PB0 — General-purpose I/O / PWM |
| 腳位 2 | PB1 — General-purpose I/O / PWM |
| 腳位 3 | PB2 — General-purpose I/O |
| 腳位 4 | PB3 — General-purpose I/O |
| 腳位 5 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| 腳位 6 | VSSIO — I/O ground |
| 腳位 7 | PB4 — General-purpose I/O |
| 腳位 8 | PB5 — General-purpose I/O |
| 腳位 9 | PB6 — General-purpose I/O |
| 腳位 10 | PB7 — General-purpose I/O |
| 腳位 11 | PB8 — General-purpose I/O |
| 腳位 12 | PB9 — General-purpose I/O |
| 腳位 13 | PB10 — General-purpose I/O |
| 腳位 14 | PB11 — General-purpose I/O |
| 腳位 15 | PB12 — General-purpose I/O |
| 腳位 16 | PB13 — General-purpose I/O |
| 腳位 17 | PB14 — General-purpose I/O |
| 腳位 18 | PB15 — General-purpose I/O |
| 腳位 19 | VDDCORE — Core supply voltage (1.2 V typical) |
| 腳位 20 | VSS — Core ground |
| 腳位 21 | PA0 — General-purpose I/O / AD0 |
| 腳位 22 | PA1 — General-purpose I/O / AD1 |
| 腳位 23 | PA2 — General-purpose I/O / AD2 |
| 腳位 24 | PA3 — General-purpose I/O / AD3 |
| 腳位 25 | PA4 — General-purpose I/O / AD4 |
| 腳位 26 | PA5 — General-purpose I/O / AD5 |
| 腳位 27 | PA6 — General-purpose I/O / AD6 |
| 腳位 28 | PA7 — General-purpose I/O / AD7 |
| 腳位 29 | PA8 — General-purpose I/O / AD8 |
| 腳位 30 | PA9 — General-purpose I/O / AD9 |
| 腳位 31 | PA10 — General-purpose I/O / AD10 |
| 腳位 32 | VDDCORE — Core supply voltage (1.2 V typical) |
| 腳位 33 | VSS — Core ground |
| 腳位 34 | PA11 — General-purpose I/O / AD11 |
| 腳位 35 | PA12 — General-purpose I/O / AD12 |
| 腳位 36 | PA13 — General-purpose I/O / AD13 |
| 腳位 37 | PA14 — General-purpose I/O / AD14 |
| 腳位 38 | PA15 — General-purpose I/O / AD15 |
| 腳位 39 | PA16 — General-purpose I/O |
| 腳位 40 | PA17 — General-purpose I/O |
| 腳位 41 | PA18 — General-purpose I/O |
| 腳位 42 | PA19 — General-purpose I/O |
| 腳位 43 | PA20 — General-purpose I/O |
| 腳位 44 | PA21 — General-purpose I/O |
| 腳位 45 | PA22 — General-purpose I/O |
| 腳位 46 | PA23 — General-purpose I/O |
| 腳位 47 | PA24 — General-purpose I/O |
| 腳位 48 | PA25 — General-purpose I/O |
| 腳位 49 | PA26 — General-purpose I/O |
| 腳位 50 | PA27 — General-purpose I/O |
| 腳位 51 | PA28 — General-purpose I/O |
| 腳位 52 | PA29 — General-purpose I/O |
| 腳位 53 | PA30 — General-purpose I/O |
| 腳位 54 | PA31 — General-purpose I/O |
| 腳位 55 | TDI — JTAG Test Data In |
| 腳位 56 | TDO — JTAG Test Data Out |
| 腳位 57 | TMS — JTAG Test Mode Select / SWDIO |
| 腳位 58 | TCK — JTAG Test Clock / SWCLK |
| 腳位 59 | NRST — Reset input (active low) |
| 腳位 60 | ERASE — Chip erase pin (high at reset triggers full erase) |
| 腳位 61 | HDP — Hardware debug port enable |
| 腳位 62 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| 腳位 63 | VSSIO — I/O ground |
| 腳位 64 | DP — USB Full-Speed Data Plus (with on-chip transceiver) |
典型應用
ATSAM4SD32BA-ANR 適用於 8 應用s: Industrial Human-Machine Interface (HMI) Panels, USB Peripherals and Barcode Scanners, USB-to-Ethernet and USB-to-CAN Bridges, Smart Energy Metering, Building Automation Gateways, Motor Control Front-End Processors, Point-of-Sale (POS) Terminals, HVAC and Climate Controllers.
Industrial Human-Machine Interface (HMI) Panels
The ATSAM4SD32BA-ANR is well suited to industrial HMI panels because its 2 MB Flash can hold emWin or LVGL graphic stacks plus fonts and bitmaps without external memory, and the Cortex-M4 FPU accelerates raster operations. The 12-bit ADC and PWM outputs drive backlight dimming and analog sensor reads, while the EBI bus can connect to an external TFT controller for larger displays. Compared to lower-flash SAM4S variants, the 2 MB Flash allows more language assets and screen templates to coexist. Keep VDDCORE decoupling within 5 mm of the pin to avoid LCD noise on the analog ADC readings.
推薦
USB Peripherals and Barcode Scanners
The integrated USB 2.0 Full-Speed Device/Host controller with on-chip transceiver enables USB HID, CDC, and mass-storage peripherals without external PHY. For barcode scanners, the DMA-fed USB endpoint delivers 12 Mbps sustained throughput while the Cortex-M4 processes image decode and trigger logic. The 160 KB SRAM accommodates frame buffers for 1D/2D decoding libraries. Add a USBLC6-2SC6 ESD array on DP/DM for production robustness and follow USB-IF pull-up resistor recommendations for full-speed enumeration.
推薦
USB-to-Ethernet and USB-to-CAN Bridges
The ATSAM4SD32BA-ANR integrates both USB Full-Speed and 10/100 Ethernet MAC (EMAC), making it a single-chip USB-to-Ethernet gateway. Add an external PHY such as the LAN8720A via RMII for 100 Mbps operation. For industrial protocols, the CAN 2.0A/B controller supports automotive and factory-automation bridging. The 2 MB Flash holds TCP/IP stacks (lwIP) and CANopen or J1939 firmware; the 160 KB SRAM is sufficient for lwIP PBUF buffers. Use MII/RMII according to board layout constraints.
推薦
Smart Energy Metering
Single-phase and three-phase smart electricity meters use the ATSAM4SD32BA-ANR for metrology DSP and for the communication backhaul (MCI for SD-card logging plus optional PLC or RF module). The Cortex-M4 DSP extensions execute FFT-based harmonic analysis on the 12-bit ADC samples, while the hardware FPU accelerates per-sample calibration math. Backup mode with RTC keeps the calendar running during mains loss with sub-2 µA draw, preserving time-of-use tariff schedules. The CAN interface supports DLMS/COSEM over CAN for industrial metering.
推薦
Building Automation Gateways
Building automation gateways aggregate KNX, Modbus, BACnet, and Wi-Fi/Ethernet traffic. The ATSAM4SD32BA-ANR's combination of USB Host, Ethernet MAC, multiple USART/SPI/TWI, and 2 MB Flash for protocol stacks (FreeRTOS + lwIP + KNXnet/IP) makes it a strong choice. The Cortex-M4 with FPU runs encryption (TLS) for cloud uplink while leaving headroom for local control logic. The EBI can interface to an external Wi-Fi module's host interface if needed.
推薦
Motor Control Front-End Processors
In FOC and PFC motor drives, the ATSAM4SD32BA-ANR serves as the supervisory MCU running commutation state machines, while the Cortex-M4 DSP extensions handle fast current-loop math. PWM outputs drive a 3-phase inverter through gate drivers, and the 12-bit ADC samples phase currents synchronously to the PWM center. The CAN interface supports CiA 402 motion-control networking. For higher-frequency loops, pair with a SAM4S16 or SAME70 dual-core design; for low-power fans, the ATSAM4S8CA-AU sibling is sufficient.
推薦
Point-of-Sale (POS) Terminals
POS terminals need USB Host for barcode scanners and printers, Ethernet for payment processing, secure key storage, and a colorful HMI. The ATSAM4SD32BA-ANR covers USB Host, Ethernet MAC, HSMCI for SD-card transaction logs, and 2 MB Flash for application code plus TLS libraries. The hardware AES in the SAM4S accelerates secure transaction handshakes. Use the 12-bit ADC for battery monitoring on portable terminals and the RTC for tamper-resistant timestamping.
推薦
HVAC and Climate Controllers
HVAC controllers combine analog sensing (NTC thermistors, 0-10 V actuator feedback), digital I/O for relays, and a graphical LCD or segment display. The ATSAM4SD32BA-ANR's 12-bit ADC with up to 16 channels handles multiple temperature zones, while PWM outputs drive triac-fired heaters and variable-speed fans. The 2 MB Flash holds complex scheduling algorithms and multi-language UI assets. CAN bus integration supports BACnet or Modbus HVAC networking. Backup mode with RTC keeps schedules running across power cycles.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4SD32BA-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 | ATSAM4SD32BB-AUR | ATSAM4SD32BA-AU | ATSAM4SD32BA-AN | ATSAM4S16CB-CFNR | ATSAM4SA16BA-AU | ATSAM4S8BA-AU |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | LQFP-64 | LQFP-64 - same | LQFP-64 - same | LQFP-64 - same | LQFP-64 - same | LQFP-64 - same | LQFP-64 - same |
| Program Flash | 2 MB | 2 MB | 2 MB | 2 MB | 1 MB | 1 MB | 512 KB |
| SRAM | 160 KB | 160 KB | 160 KB | 160 KB | 160 KB | 160 KB | 128 KB |
| Maximum 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 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host |
| Ethernet MAC | 10/100 EMAC with MII/RMII | 10/100 EMAC with MII/RMII | 10/100 EMAC with MII/RMII | 10/100 EMAC with MII/RMII | 10/100 EMAC with MII/RMII | 10/100 EMAC with MII/RMII | 10/100 EMAC with MII/RMII |
| CAN | 1x CAN 2.0A/B | 1x CAN 2.0A/B | 1x CAN 2.0A/B | 1x CAN 2.0A/B | 1x CAN 2.0A/B | 1x CAN 2.0A/B | 1x CAN 2.0A/B |
| Silicon Revision | Revision A | Revision B (recommended) | Revision A | Revision A | Revision B | Revision B | Revision A |
| Unit Price (qty 100) | $9.18 | $9.50 | $9.20 | $9.00 | $7.20 | $7.10 | $6.40 |
主要差異化特點
- Highest flash density in the SAM4S 64-LQFP family (對比ATSAM4S8BA-AU)
- On-chip Ethernet MAC plus USB Host makes it a single-chip gateway (對比PIC32MX)
- Revision A silicon - mature and well-characterized (對比ATSAM4SD32BB-AUR (Revision B))
設計說明
Decouple VDDCORE (pin 19 and pin 32) with a 100 nF X7R ceramic + a 4.7 µF X5R ceramic placed within 5 mm of the pins, and add a 10 µF bulk capacitor near the supply. VDDIO (pin 5 and pin 62) requires a 100 nF ceramic per pin plus a 1 µF bulk. Estimated: at 120 MHz and 1.2 V core, the active current is roughly 30-40 mA, so the LDO supplying VDDCORE must handle at least 50 mA. Use a 3.3 V LDO such as MCP1700 (250 mA) for VDDIO from a 5 V input.
Do NOT leave the ERASE pin floating - tie it to GND through a 10 kΩ resistor. Driving ERASE high during reset triggers a full chip erase of the 2 MB Flash, which can destroy firmware in the field. The NRST pin must have a 10 kΩ pull-up and a 100 nF capacitor to GND for a clean power-on reset. Avoid using PA0-PA3 for high-current loads because they share ADC reference circuits.
Route the USB DP/DM traces as a 90 Ω differential pair with length matching to within 2 mm, keep them short (< 50 mm), and surround them with a ground pour. Place the USBLC6-2SC6 ESD array within 5 mm of the USB connector. For Ethernet, route the RMII signals (50 MHz) with length matching to within 5 mm and keep them away from switching nodes. Reserve a 2x5 0.05" JTAG/SWD header footprint even in production designs to allow firmware recovery.
Estimated: at full 120 MHz CPU + USB + Ethernet activity, the LQFP-64 thermal resistance theta_JA is approximately 50 °C/W, giving a 5-7 °C rise above ambient at 100 mA active current. Industrial-grade operating range (-40 °C to +85 °C) is easily met without a heatsink. The Backup mode with RTC reduces core current below 2 µA, allowing RTC-only operation on a coin cell during mains loss.
合規資訊
RoHS compliant per Microchip product page. Industrial-grade temperature range -40 °C to +85 °C. Not AEC-Q100 qualified; for automotive applications consider the SAM V71/V70 family which has AEC-Q100 Grade 2 variants.
