N32H493 - 240MHz Cortex-M4F MCU for 800G Optical Modules
料号： N32H493 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
N32H493 概述
A microcontroller (MCU) is an integrated circuit containing a processor core, program memory (Flash), data memory (RAM), and a rich set of programmable peripherals on a single die. Within the broader semiconductor taxonomy, the N32H493 sits under: MCU -> microcontroller -> embedded processor -> semiconductor IC. The Cortex-M4F core places it in the deterministic real-time control class, while its 240 MHz clock and 1 MB Flash put it in the high-performance segment typically reserved for motor control, industrial automation, and now high-bandwidth optical interconnect.
Key differentiating features include three 12-bit 4.7 Msps ADCs and two 12-bit DACs for analog monitoring of optical bias points, an xSPI high-speed external memory interface for off-chip boot/expansion, and hardware cryptographic/security accelerators targeted at secure boot and firmware protection. Communication peripherals include multiple U(S)ART, I2C, SPI, plus advanced, general-purpose, and low-power timers. The dual-bank Flash architecture supports in-field firmware updates (OTA) without downtime, a critical requirement for deployed datacenter transceivers.
The N32H493 is purpose-built as the dedicated control MCU inside QSFP-DD800 and OSFP 1.6T optical modules, where it manages CDR/CDR-less SerDes configuration, TEC (thermo-electric cooler) control via the on-chip DACs and ADCs, laser bias loops, I2C/CMIS management interface, and host-facing alarm/interrupt signaling. Internal hardware security and dual-bank Flash allow fail-safe firmware updates in the field.
直接替换替代料： N32H493 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
N32H493REB7
✅ 直接替换📋 参考替代料（不在目录中）
N32H482REB7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
N32H474REL7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
N32H493 最大额定值与电气特性
| Core Architecture | ARM Cortex-M4F (32-bit, with FPU and DSP) |
| Maximum CPU Frequency | 240 MHz |
| Floating Point Unit | Yes (single-precision) |
| DSP Instructions | Yes (ARM DSP extension) |
| Embedded Flash | Up to 1 MB (dual-bank) |
| SRAM | 256 KB total (192 KB general + 64 KB CCM) |
| Backup SRAM | 4 KB (battery-domain retention) |
| ADC | 3 x 12-bit, 4.7 Msps |
| DAC | 2 x 12-bit |
| High-Speed External Memory Interface | xSPI (Octal-SPI/HyperBus-class) |
| Communication Interfaces | U(S)ART, I2C, SPI |
| Timers | Advanced, general-purpose, basic, low-power timers |
| Hardware Security | Integrated hardware crypto/security accelerators |
| Primary Application | 800G/1.6T optical module controller |
| Package Options | BGA-64 (5x5) and additional variants per datasheet |
| RoHS 状态 | Compliant (per JLCPCB listing) |
N32H493 bga-64 (5x5) and additional variants per datasheet 引脚配置指南
N32H493（bga-64 (5x5) and additional variants per datasheet 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： N32H493.
请参阅 数据手册 以查看完整引脚配置。
典型应用
N32H493 适用于 6 应用s: 800G/1.6T Optical Module Controller, Industrial Motor Control and DSP Drive, Secure IoT Edge Gateways, High-Speed Data Acquisition Systems, Power Conversion and Digital Control Loops, Medical Patient Monitoring and Diagnostic Devices.
800G/1.6T Optical Module Controller
The N32H493 is purpose-built for 800G and 1.6T optical transceivers (QSFP-DD800, OSFP 1.6T). At 240 MHz with Cortex-M4F DSP, it closes the laser-bias and TEC control loops in microseconds using its three 12-bit 4.7 Msps ADCs and two 12-bit DACs, while the dual-bank 1 MB Flash supports CMIS-mandated in-field firmware swap without module reset. The on-chip hardware crypto accelerators authenticate boot images, satisfying MSAs that forbid unsigned firmware in deployed modules.
推荐
Industrial Motor Control and DSP Drive
Outside the optical-module niche, the N32H493's 240 MHz Cortex-M4F with FPU and DSP instructions, plus three fast 12-bit ADCs and multiple advanced timers, make it a strong fit for high-end industrial motor drives and field-oriented control (FOC). The xSPI bus lets designers expand execution memory for complex commutation algorithms without paying the latency of SPI legacy mode, while the BGA-64 5x5 footprint fits compact IPM-rated inverter boards.
推荐
Secure IoT Edge Gateways
The N32H493's hardware crypto accelerators and dual-bank Flash enable secure-boot and OTA-update behavior required for hardened edge gateways. The 256 KB SRAM (with 64 KB CCM) is enough to run TLS, MQTT, and a small embedded web server, while the xSPI interface can attach a fast Octal-PSRAM for buffering bursts of sensor traffic without overflow. Industrial -40C to +85C support allows outdoor deployment.
推荐
High-Speed Data Acquisition Systems
The N32H493 integrates three 12-bit 4.7 Msps ADCs - over 14 MSPS aggregate - which is rare at this package size and price. Combined with Cortex-M4F DSP, it can perform on-chip FIR/FFT decimation for power-line monitoring, vibration analysis, or ultrasonic flow metering. The 1 MB Flash stores calibration tables, and the xSPI bus streams decimated data to a host SoC over SPI/U(S)ART.
推荐
Power Conversion and Digital Control Loops
For digital-control AC/DC, DC/DC, or PFC converters, the N32H493 offers a 240 MHz Cortex-M4F core that closes a 100 kHz control loop with comfortable headroom for housekeeping and communication. Its two 12-bit DACs and three fast ADCs enable mixed-mode control, while the advanced timers generate the high-resolution PWMs required for totem-pole PFC and LLC topologies in datacom and telecom rectifier designs.
推荐
Medical Patient Monitoring and Diagnostic Devices
In patient monitors and portable diagnostic equipment, the N32H493's DSP extensions accelerate ECG and pulse-oximetry filter chains, while its three 12-bit ADCs digitize multiple sensor channels simultaneously. Hardware crypto and secure boot protect PHI on the wire, and dual-bank Flash supports regulatory-mandated firmware updates. The small BGA-64 package fits wearable form factors without sacrificing analog performance.
推荐
推荐产品汇总
工程参考数据： N32H493 ——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 | N32H493REB7 | N32H482REB7 | N32H474REL7 | GD32F470IIH6 |
|---|---|---|---|---|---|
| Brand | Nations Technologies | Nations Technologies | Nations Technologies | Nations Technologies | GigaDevice |
| Package | BGA-64 (5x5) | BGA-64 (5x5) - same | BGA-64 (5x5) - same | BGA-64 (5x5) - same | BGA-176 (different) |
| Core | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F | Cortex-M4F |
| Maximum CPU Frequency | 240 MHz | 240 MHz | 200 MHz | 180 MHz | 240 MHz |
| Embedded Flash | Up to 1 MB (dual-bank) | 1 MB dual-bank | 512 KB | 256 KB | 3 MB |
| SRAM | 256 KB (incl. 64 KB CCM) + 4 KB backup | 256 KB + 4 KB backup | 192 KB | 128 KB | 512 KB |
| ADC | 3 x 12-bit, 4.7 Msps | 3 x 12-bit, 4.7 Msps | 2 x 12-bit, 4 Msps | 2 x 12-bit, 1 Msps | 3 x 12-bit, 2 Msps |
| DAC | 2 x 12-bit | 2 x 12-bit | 2 x 12-bit | 1 x 12-bit | 2 x 12-bit |
| xSPI / Octal-SPI | Yes | Yes | Yes | No | No (OSPI optional) |
| Hardware Crypto | Yes | Yes | Yes | No | External required |
| Target Application | 800G/1.6T optical module | 800G/1.6T optical module | Industrial control | General-purpose MCU | Industrial / consumer |
关键差异点
- Dual-bank 1 MB Flash with hardware crypto, in a BGA-64 5x5 footprint （对比 N32H474REL7)
- Purpose-tuned for 800G/1.6T optical modules with 3 fast 12-bit ADCs and 2 DACs （对比 GD32F470IIH6)
- Compact BGA-64 5x5 with no compromise on Flash density or peripheral set （对比 STM32H743)
设计说明
Estimated: at full 240 MHz operation with all peripherals enabled, the N32H493 in BGA-64 (5x5) typically dissipates under 0.4 W; ensure at least four thermal vias in a central array under the BGA die paddle and a continuous top-layer copper pour to keep junction temperature below 105 C in industrial environments. For module-internal designs (inside a sealed optical transceiver), confirm case-temperature rise via thermocouple measurements, not just datasheet theta-JA.
Route the xSPI signals to the BGA-64 footprint as a tightly length-matched 50-ohm impedance group; place a 0.1 uF decoupling cap on every VDD/VSS pair adjacent to the BGA, and a bulk 4.7 uF near the package. The internal regulator's noise directly affects the 12-bit ADC SNR, so keep the analog VREF pin isolated from digital switching returns by a ground island and a ferrite bead.
Do not skip configuration of the dual-bank Flash swap interrupt before enabling in-field updates; an unintended watchdog reset during bank-switch can brick the module in the field. Always validate the new image's CRC and signature using the hardware crypto accelerator before remapping the boot vector, and keep a rollback image in the inactive bank for at least one full production cycle.
The three 12-bit ADCs at 4.7 Msps share an analog supply pin; if the application needs simultaneous sampling across all three channels, route the analog VREF through a dedicated low-noise LDO and avoid sharing it with the DAC analog supply. Buried vias under BGA balls can degrade ADC linearity if the via stubs exceed 0.3 mm - use back-drilling or blind-via stacks for high-precision channels.
合规信息
RoHS compliance and lead-free confirmed via JLCPCB BGA-64 listing. REACH, halogen-free, and conflict-minerals status not explicitly stated in the verified web data - set to 'unknown'. AEC-Q100 not applicable - N32H493 targets optical-module/industrial, not automotive.
