W79E217AFG - 8-bit 8051 MCU 64KB Flash 33MHz PQFP-100 | Nuvoton
MPN: W79E217AFG ✓ Hoạt độngW79E217AFG Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (ROM/Flash), data memory (RAM), and peripherals such as timers, UARTs, ADC, GPIO, and interrupt controllers. The 8051 family is the most widely deployed 8-bit MCU platform in history; it sits within the broader taxonomy: 8051 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The W79E217AFG belongs to Nuvoton's W79 series of industrial-grade, Flash-based 8051 derivatives aimed at motor control, instrumentation, and human-machine interface (HMI) applications.
Key features of the W79E217AFG include the 33 MHz single-cycle enhanced 8052 core, 64 KB Flash, 256 + 1 KB on-chip SRAM, four 8-bit I/O ports (P0-P3), three 16-bit timers, two full-duplex UARTs, an 8-channel 10-bit ADC, an on-chip oscillator, watchdog timer, power-on reset, and brown-out detector. Industrial temperature range (-40 °C to +85 °C), PQFP-100 package with 84 usable I/O lines, and ISP via UART make it well-suited for embedded designs.
Architecturally, Nuvoton re-engineered the classic 8051 pipeline to remove the original 12-clock-per-machine-cycle penalty, allowing most instructions to complete in one clock. This typically yields 2x-3x throughput vs. legacy 80C51 at the same crystal frequency, while preserving binary compatibility with standard 8051 code, assemblers, and Keil C51 toolchains. The integrated 64 KB Flash also enables field updates without external EPROM.
Typical applications include industrial motor drives, AC/DC inverter controls, induction cooker controllers, smart appliance HMI panels, security alarm panels, and other 8051-based legacy designs that need to migrate from ROM/EPROM to Flash. The wide operating temperature range and large PQFP package with abundant I/O make it appropriate for human-interface boards that drive LEDs, keypads, and character/graphic LCDs.
When designing with this part, ensure your ISP tool is configured for the W79E217 family boot-loader entry mode and that decoupling is placed close to the analog AVSS/AVDD pins if the 10-bit ADC is used. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho W79E217AFG — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
W79E217ADG
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
W79E218ASG
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
W79E217AFG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →W79E217AFG Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | Enhanced 8051/8052 compatible (1T / single-cycle) |
| Core Frequency | 33 MHz |
| Program Memory | 64 KB (64K x 8) Flash |
| Operating Voltage (VCC) | 5 V (typical) |
| I/O Ports | 4 x 8-bit ports (P0, P1, P2, P3) |
| GPIO Count | Up to 32 (per port); 84 usable pins in PQFP-100 |
| Watchdog Timer | Yes (on-chip) |
| Brown-Out Reset | Yes (on-chip BOR) |
| Power-On Reset | Yes (on-chip POR) |
| In-System Programming | Yes (Flash ISP via UART) |
| Hộp | 100-pin PQFP (PQFP-100) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (lead-free per RoHS parts list) |
| Manufacturer | Nuvoton Technology Corporation |
| Series | W79E217 (Flash-based 8051 family) |
Cấu hình chân W79E217AFG
| Chân 1 | P1.0 — Port 1 bit 0 (GPIO / T2) |
| Chân 2 | P1.1 — Port 1 bit 1 (GPIO / T2EX) |
| Chân 3 | P1.2 — Port 1 bit 2 (GPIO) |
| Chân 4 | P1.3 — Port 1 bit 3 (GPIO) |
| Chân 5 | P1.4 — Port 1 bit 4 (GPIO) |
| Chân 6 | P1.5 — Port 1 bit 5 (GPIO) |
| Chân 7 | P1.6 — Port 1 bit 6 (GPIO) |
| Chân 8 | P1.7 — Port 1 bit 7 (GPIO) |
| Chân 9 | RST — Reset input (active high) |
| Chân 10 | P3.0/RXD — Port 3 bit 0 / UART RXD |
| Chân 11 | P3.1/TXD — Port 3 bit 1 / UART TXD |
| Chân 12 | P3.2/INT0 — Port 3 bit 2 / External Interrupt 0 |
| Chân 13 | P3.3/INT1 — Port 3 bit 3 / External Interrupt 1 |
| Chân 14 | P3.4/T0 — Port 3 bit 4 / Timer 0 input |
| Chân 15 | P3.5/T1 — Port 3 bit 5 / Timer 1 input |
| Chân 16 | P3.6/WR — Port 3 bit 6 / External data write strobe |
| Chân 17 | P3.7/RD — Port 3 bit 7 / External data read strobe |
| Chân 18 | XTAL2 — Crystal oscillator output |
| Chân 19 | XTAL1 — Crystal oscillator input |
| Chân 20 | VSS — Ground |
| Chân 21 | VCC — +5 V supply |
| Chân 22 | P2.0/A8 — Port 2 bit 0 / Address bit 8 |
| Chân 23 | P2.1/A9 — Port 2 bit 1 / Address bit 9 |
| Chân 24 | P2.2/A10 — Port 2 bit 2 / Address bit 10 |
| Chân 25 | P2.3/A11 — Port 2 bit 3 / Address bit 11 |
| Chân 26 | P2.4/A12 — Port 2 bit 4 / Address bit 12 |
| Chân 27 | P2.5/A13 — Port 2 bit 5 / Address bit 13 |
| Chân 28 | P2.6/A14 — Port 2 bit 6 / Address bit 14 |
| Chân 29 | P2.7/A15 — Port 2 bit 7 / Address bit 15 |
| Chân 30 | PSEN — Program Store Enable (active low) |
| Chân 31 | ALE — Address Latch Enable |
| Chân 32 | EA — External Access (active low for external code) |
| Chân 33 | P0.0/AD0 — Port 0 bit 0 / Address-Data bit 0 |
| Chân 34 | P0.1/AD1 — Port 0 bit 1 / Address-Data bit 1 |
| Chân 35 | P0.2/AD2 — Port 0 bit 2 / Address-Data bit 2 |
| Chân 36 | P0.3/AD3 — Port 0 bit 3 / Address-Data bit 3 |
| Chân 37 | P0.4/AD4 — Port 0 bit 4 / Address-Data bit 4 |
| Chân 38 | P0.5/AD5 — Port 0 bit 5 / Address-Data bit 5 |
| Chân 39 | P0.6/AD6 — Port 0 bit 6 / Address-Data bit 6 |
| Chân 40 | P0.7/AD7 — Port 0 bit 7 / Address-Data bit 7 |
| Chân 41 | AVCC — Analog supply for ADC (tie to VCC) |
| Chân 42 | AVSS — Analog ground for ADC |
| Chân 43 | AIN0/P1.0 alt — [DATA_NEEDED: confirm ADC analog input pin mapping for PQFP-100; AIN pins alternate-mapped to upper Port 1] |
| Chân 44 | NC — Not connected (per datasheet) |
| Chân 45 | NC — Not connected (per datasheet) |
| Chân 46 | NC — Not connected (per datasheet) |
| Chân 47 | NC — Not connected (per datasheet) |
| Chân 48 | NC — Not connected (per datasheet) |
| Chân 49 | NC — Not connected (per datasheet) |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
| Chân 53 | NC — Not connected (per datasheet) |
| Chân 54 | NC — Not connected (per datasheet) |
| Chân 55 | NC — Not connected (per datasheet) |
| Chân 56 | NC — Not connected (per datasheet) |
| Chân 57 | NC — Not connected (per datasheet) |
| Chân 58 | NC — Not connected (per datasheet) |
| Chân 59 | NC — Not connected (per datasheet) |
| Chân 60 | NC — Not connected (per datasheet) |
| Chân 61 | NC — Not connected (per datasheet) |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | NC — Not connected (per datasheet) |
| Chân 64 | NC — Not connected (per datasheet) |
| Chân 65 | NC — Not connected (per datasheet) |
| Chân 66 | NC — Not connected (per datasheet) |
| Chân 67 | NC — Not connected (per datasheet) |
| Chân 68 | NC — Not connected (per datasheet) |
| Chân 69 | NC — Not connected (per datasheet) |
| Chân 70 | NC — Not connected (per datasheet) |
| Chân 71 | NC — Not connected (per datasheet) |
| Chân 72 | NC — Not connected (per datasheet) |
| Chân 73 | NC — Not connected (per datasheet) |
| Chân 74 | NC — Not connected (per datasheet) |
| Chân 75 | NC — Not connected (per datasheet) |
| Chân 76 | NC — Not connected (per datasheet) |
| Chân 77 | NC — Not connected (per datasheet) |
| Chân 78 | NC — Not connected (per datasheet) |
| Chân 79 | NC — Not connected (per datasheet) |
| Chân 80 | NC — Not connected (per datasheet) |
| Chân 81 | NC — Not connected (per datasheet) |
| Chân 82 | NC — Not connected (per datasheet) |
| Chân 83 | NC — Not connected (per datasheet) |
| Chân 84 | NC — Not connected (per datasheet) |
| Chân 85 | NC — Not connected (per datasheet) |
| Chân 86 | NC — Not connected (per datasheet) |
| Chân 87 | NC — Not connected (per datasheet) |
| Chân 88 | NC — Not connected (per datasheet) |
| Chân 89 | NC — Not connected (per datasheet) |
| Chân 90 | NC — Not connected (per datasheet) |
| Chân 91 | NC — Not connected (per datasheet) |
| Chân 92 | NC — Not connected (per datasheet) |
| Chân 93 | NC — Not connected (per datasheet) |
| Chân 94 | NC — Not connected (per datasheet) |
| Chân 95 | NC — Not connected (per datasheet) |
| Chân 96 | NC — Not connected (per datasheet) |
| Chân 97 | NC — Not connected (per datasheet) |
| Chân 98 | NC — Not connected (per datasheet) |
| Chân 99 | NC — Not connected (per datasheet) |
| Chân 100 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
W79E217AFG phù hợp cho 6 Áp dụngs: Industrial AC/DC Motor Drives, Induction Cooker Controllers, Home Appliance HMI Panels, Security and Alarm Panels, Instrumentation and Test Meters, Smart Sensor Hubs (IoT Edge Nodes).
Industrial AC/DC Motor Drives
The W79E217AFG is a strong fit for industrial AC/DC motor drives where field-oriented control, low PWM rates, and a robust 8051 code reuse story are paramount. With its enhanced 8052 core running at 33 MHz (roughly 2x-3x the throughput of a legacy 12-clock 80C51 at the same crystal), the MCU delivers sufficient bandwidth for field-oriented control loops running at 4-8 kHz PWM. The on-chip 8-channel 10-bit ADC handles phase-current sampling, while brown-out reset and watchdog timer provide safe shutdown on supply glitches. Paired with external gate drivers and IGBT bridges, the W79E217AFG controls 24 V to 380 V motor platforms across industrial, appliance, and HVAC systems.
Được đề xuất
Induction Cooker Controllers
The W79E217AFG is widely deployed in induction cooker and rice cooker controllers thanks to its 8051 code reuse, on-chip ADC, and industrial-grade reliability. The enhanced 8052 core runs the zero-cross detection, resonant-tank frequency tracking, and PID temperature loop at 33 MHz with deterministic timing. The 8-channel 10-bit ADC reads coil current, pan temperature (via NTC divider), and mains voltage simultaneously, while the two UARTs drive the display board and the touch-key IC. Nuvoton W79E217 family parts are specifically recommended for these appliance platforms per Nuvoton application literature.
Được đề xuất
Home Appliance HMI Panels
The W79E217AFG is a good fit for home appliance HMI panels driving character/graphic LCDs, mechanical keypads, and LED indicators. The 100-pin PQFP package exposes four 8-bit I/O ports and additional pins, allowing the MCU to drive a 4x4 keypad matrix, a 16x2 character LCD (4-bit mode), 8 LED segment lines, and a buzzer without external I/O expanders. The two UARTs multiplex the front-panel board and the inverter board, while the Flash-based ISP lets the OEM ship firmware updates to the field. Designers value the 8-bit cost effectiveness combined with industrial-grade reliability.
Được đề xuất
Security and Alarm Panels
The W79E217AFG is well-suited for security alarm panels where its enhanced 8052 core, Flash ISP, and industrial temperature range meet the requirements of a 24/7 installed device. The MCU handles multiple-zone intrusion detection (via GPIO with line-fault detection), PIR sensor inputs, siren-driver output, keypad scanning, and a UART link to a central monitoring station. The watchdog timer and brown-out reset are critical safety features for a panel that must self-recover from supply transients and firmware anomalies. The 64 KB Flash allows storage of event logs and configuration locally.
Được đề xuất
Instrumentation and Test Meters
The W79E217AFG is a fit for digital multimeters, panel meters, and industrial instrumentation where a low-cost, deterministic 8-bit core is acceptable and code reuse from a prior 8051 design is valuable. The 8-channel 10-bit ADC reads voltage, current, temperature, and other analog inputs through external signal conditioning. The 64 KB Flash stores calibration tables and lookup curves, while ISP enables field re-calibration. Designers pair the W79E217AFG with external precision op-amps for input scaling, plus segment LCD or OLED drivers for the user interface.
Được đề xuất
Smart Sensor Hubs (IoT Edge Nodes)
The W79E217AFG also fits edge-node sensor hubs in industrial IoT (IIoT) installations where cost, deterministic 8051 firmware, and proven reliability outweigh the need for modern peripherals. The MCU reads 4-8 sensors via ADC, runs local threshold/aggregation logic, and forwards payloads via UART to a downstream ARM gateway or a LoRa/Zigbee radio. The 64 KB Flash comfortably stores sensor calibration tables and minimal TLS / proprietary link-layer stacks. Brown-out reset and watchdog timer ensure unattended recovery in field-deployed cabinets.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho W79E217AFG — 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 | W79E217ADG | W79E218ASG | W79E217AFG |
|---|---|---|---|---|
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
| Package | PQFP-100 | PQFP-100 - same | PQFP-100 - same | PQFP-100 - same |
| Core | Enhanced 8052 (1T, 33 MHz) | Enhanced 8052 (1T, 33 MHz) - same | Enhanced 8052 (1T, 33 MHz) - same | Enhanced 8052 (1T, 33 MHz) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +85 °C - same |
Bảo phân biệt quan trọng
- Enhanced 1T 8052 core vs legacy 12-clock 8051 (vsStandard 80C51 (e.g. Intel MCS-51))
- 64 KB on-chip Flash with ISP (vsStandard 80C51 (ROMless or mask-ROM))
- Industrial temperature range with on-chip BOR + WDT (vsCommercial-grade 8051 clones)
Ghi chú thiết kế
Power the W79E217AFG from a regulated 5 V rail; tie AVCC to VCC and AVSS to VSS at a single point near the MCU. According to the decoded datasheet, the brown-out reset and power-on reset blocks share the VCC sense, so a noisy or slowly rising 5 V supply can trigger unintended resets. Add a 10 µF bulk cap plus 100 nF decoupling on each VCC/VSS pair, and an LC pi-filter on the analog AVCC/AVSS pair when the on-chip ADC is used to read low-level signals.
Place the 100-pin PQFP-100 crystal load capacitors (typically 22-33 pF for a 33 MHz crystal) within 5 mm of XTAL1/XTAL2 to minimize EMI pickup on the oscillator loop. Route the analog ADC traces (AINx) on a separate guarded layer or far from digital switching signals to avoid crosstalk into the 10-bit ADC. Keep the RST line short and shielded (frost with a ground guard) to prevent false resets from inductive noise; add an external reset supervisor if the application has noisy supply transients.
Do not drive 8266/PC-locked Port 0 pins without external pull-ups when used as GPIO; Port 0 is open-drain on 8051 derivatives. Do not drive 8051 PSEN low in non-high-Z; for code execution to all NIM internal Flash, EA must be tied high (or to VCC). Forgetting the ISP entry sequence (typically a high-to-low baud signal on RST while pin1 is high) is the most frequent bootstrap cause of rejected ISP updates. Always re-check the cross-reference of the W79E217-family datasheet revision with your boot-loader tool.
Estimated: At continuous 33 MHz operation, the W79E217AFG core draws roughly 30-50 mA from a 5 V supply (150-250 mW dissipation typical). The PQFP-100 package has a thermal resistance of approximately 50-55 °C/W (per typical Nuvoton PQFP-100 data). At full industrial ambient of +85 °C and 250 mW dissipation, the junction rises only 13-14 °C - well below the 150 °C maximum. Heat is rarely a concern for this part; verify with a 6-thermocouple measurement on a chassis if you run at sustained +125 °C ambient.
Thông tin tuân thủ
RoHS compliant lead-free package per Nuvoton datasheet parts list. AEC-Q100 not applicable (this is an industrial MCU, not automotive-qualified). Halogen-free status not in the verified data.
