PIC12HV752-I/MF - 8-bit MCU 1.75KB Flash 20MHz DFN-8 | Microchip
MPN: PIC12HV752-I/MF ✓ Hoạt độngPIC12HV752-I/MF Tóm tắt
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip built around an 8-bit data path, integrating CPU, RAM, non-volatile program memory, and peripherals in a single package. Within Microchip's taxonomy, the PIC12HV752 belongs to the mid-range PIC® 12F family - a flash-based CMOS line optimized for ultra-low pin-count applications and positioned hierarchically under 8-bit MCU -> microcontroller -> embedded controller -> semiconductor device.
Key differentiators include two 20 ns high-speed analog comparators ideal for peak current-mode control in switch-mode power supplies, one Capture-Compare-PWM (CCP) module, 4 channels of 10-bit ADC, and an internal 8 MHz oscillator that eliminates external timing components. The 'HV' in the part number denotes the integrated high-voltage shunt regulator that simplifies supplies from AC-DC adapters or 12 V buses.
Typical applications include primary-side regulation in isolated AC-DC converters, LED driver control loops, battery charging circuits, and low-cost general-purpose logic replacement. The DFN-8 (3x3) package provides a compact footprint suitable for space-constrained designs such as IoT edge sensors and consumer electronics.
When designing with this device, ensure the high-voltage supply path includes a current-limiting series resistor sized for worst-case input voltage and minimum load. The exposed thermal pad must be soldered to a copper pour for proper thermal dissipation. MPLAB X IDE with XC8 compiler is the recommended toolchain for firmware development.
Bộ thay thế dễ dàng lắp đặt cho PIC12HV752-I/MF — 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 PIC12HV752-I/MF (cùng hình factor và footprint) — khác nhau ở Internal Oscillator, Package, ADC, Operating Temperature, Analog Comparators.
PIC12F752-I/MF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC12HV752-E/MF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC12HV615-I/MD
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC12F1840-I/MF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC12F1822-I/MF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC12F615-I/MF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC12HV752-I/MF Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC mid-range 8-bit RISC |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| Data RAM | 64 bytes |
| Maximum CPU Speed | 20 MHz |
| Instruction Throughput | 5 MIPS |
| Internal Oscillator | 8 MHz |
| Number of I/O Pins | 6 |
| ADC | 10-bit, 4 channels |
| Analog Comparators | 2 (high-speed, 20 ns response) |
| CCP Modules | 1 |
| Supply Voltage (Shunt Regulator) | 2 V to 5 V (with HV shunt) |
| Supply Voltage (Direct) | 4 V to 5 V |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 8-pin DFN (3x3 mm) with exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC12HV752-I/MF
| Chân 1 | RA3/MCLR/VPP — Digital I/O / Master Clear (reset) / programming voltage input |
| Chân 2 | RA0/AN0/C1IN+/ICSPDAT — Digital I/O / ADC input / comparator non-inverting input / ICSP data |
| Chân 3 | RA1/AN1/C1IN-/ICSPCLK — Digital I/O / ADC input / comparator inverting input / ICSP clock |
| Chân 4 | RA2/AN2/C1OUT — Digital I/O / ADC input / comparator 1 output |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RA4/AN3/C2IN+/P1B/CCP1 — Digital I/O / ADC input / comparator 2 non-inverting input / PWM output |
| Chân 7 | RA5/AN4/C2IN-/P1A/CCP1 — Digital I/O / ADC input / comparator 2 inverting input / PWM output |
| Chân 8 | VDD — Positive supply (2V to 5V direct, higher via HV shunt regulator) |
Ứng dụng tiêu biểu
PIC12HV752-I/MF phù hợp cho 6 Áp dụngs: Primary-Side Regulation in AC-DC SMPS, LED Driver Control Loops, Battery Charging Management, Fan and Motor Speed Control, IoT Edge Sensor Nodes, Industrial Control and Logic Replacement.
Primary-Side Regulation in AC-DC SMPS
The PIC12HV752-I/MF is purpose-built for primary-side regulation in isolated AC-DC converters such as 5W-15W cell phone chargers and LED drivers. The two 20 ns high-speed analog comparators directly sense the primary-side current via a current transformer, enabling peak current-mode control with sub-microsecond response. The integrated HV shunt regulator accepts 12 V to 15 V directly from the rectified mains bulk capacitor through a single dropping resistor, eliminating the auxiliary winding bias supply. According to the datasheet, the 5 MIPS throughput is sufficient to execute a 50 kHz control loop with margin for valley detection and OVP/UVP protection logic. The CCP module generates the PWM drive to the MOSFET gate with programmable dead-band control.
Được đề xuất
LED Driver Control Loops
The PIC12HV752-I/MF is well suited for constant-current LED driver controllers in commercial and industrial lighting. The 10-bit ADC measures output current via a sense resistor, while the analog comparators detect zero-crossing for boundary conduction mode PFC. The HV shunt simplifies the auxiliary supply when running directly from rectified mains. According to the datasheet, the 6 I/O pins are sufficient for PWM dimming, enable input, fault output, and programming/debug. The 8-pin DFN package (3x3 mm) fits inside compact GU10 and MR16 form-factor LED bulbs, while the exposed pad provides thermal dissipation for the moderate power consumption of the controller itself.
Được đề xuất
Battery Charging Management
The PIC12HV752-I/MF can implement single-cell Li-ion or NiMH charger control in low-power portable applications. The ADC monitors battery voltage, charge current, and temperature, while the PWM controls a linear or switching pass element. The HV shunt regulator allows direct connection to a 9 V or 12 V wall adapter without an external regulator. With 1.75 KB Flash, the device holds a state-machine CC-CV charging algorithm plus safety timers. Per the Microchip datasheet, the 20 MHz CPU executes the charge loop in microseconds, leaving headroom for periodic LED status indication and user-button debounce.
Được đề xuất
Fan and Motor Speed Control
The PIC12HV752-I/MF can implement closed-loop brushless DC fan or small brushed DC motor controllers in consumer appliances. The CCP module provides a 20 kHz PWM drive, while the ADC reads back-EMF or shunt current for closed-loop speed regulation. The analog comparators handle zero-crossing detection for sensorless BLDC commutation. The HV shunt simplifies the 12 V supply path in 24 V or 48 V telecom rectifier fan trays. According to the datasheet, the 5 MIPS throughput easily supports 50 us control periods for motors up to several hundred watts.
Được đề xuất
IoT Edge Sensor Nodes
The PIC12HV752-I/MF serves as a low-cost sensor node controller in IoT edge devices where size and BOM cost matter more than CPU performance. The internal 8 MHz oscillator eliminates external timing components, while the 6 I/O pins connect to a temperature sensor, a digital output, and a UART link. The HV shunt allows direct connection to a 9 V battery or energy-harvesting supply. Per the datasheet, the device supports sleep currents below 1 uA with wake-on-change interrupts, enabling multi-year battery life in remote sensor deployments. The 8-pin DFN (3x3 mm) footprint integrates into wearable and disposable sensor designs.
Được đề xuất
Industrial Control and Logic Replacement
The PIC12HV752-I/MF replaces discrete logic and 555-timer circuits in industrial control panels with a programmable, field-upgradeable solution. The 6 I/O pins handle multiple signal routing tasks, while the 10-bit ADC reads 4-20 mA loop signals or potentiometer setpoints. The HV shunt allows operation from 24 V industrial rails. According to the datasheet, the extended -40C to +85C operating range suits factory floor environments, and the Flash memory allows last-minute logic changes without board rework - reducing SKU complexity for panel builders.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC12HV752-I/MF — 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 | PIC12F752-I/MF | PIC12HV752-E/MF | PIC12HV615-I/MD | PIC12F1840-I/MF | PIC12F1822-I/MF |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | DFN-8 (3x3 mm) | DFN-8 (3x3 mm) - same | DFN-8 (3x3 mm) - same | DFN-8 (3x3 mm) - same | DFN-8 (3x3 mm) - same | DFN-8 (3x3 mm) - same |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 7 KB | 3.5 KB |
| Data RAM | 64 B | 64 B | 64 B | 64 B | 256 B | 128 B |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 32 MHz | 32 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| Analog Comparators | 2 (20 ns) | 2 (20 ns) | 2 (20 ns) | 1 | 1 | 1 |
| HV Shunt Regulator | Yes (integrated) | No | Yes (integrated) | Yes (integrated) | No | No |
| ADC | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch |
Bảo phân biệt quan trọng
- Integrated HV shunt regulator eliminates external LDO in mains-powered designs (vsPIC12F752-I/MF)
- Two high-speed 20 ns comparators for primary-side peak current control (vsPIC12HV615-I/MD)
- Extended temperature option available in same package (vsPIC12HV752-E/MF)
- Dedicated CCP module for PWM generation (vsPIC12F1822-I/MF)
Ghi chú thiết kế
When using the HV shunt regulator, select the external series dropping resistor (R) such that the shunt current (I_SHUNT) plus load current (I_LOAD) keeps the regulator within its 5 mA to 50 mA regulation range across all input voltage conditions. Use R = (V_IN_max - 5V) / (I_SHUNT + I_LOAD_max). Place a 1 uF decoupling capacitor on VDD close to the IC. Without the HV path, supply VDD directly with a regulated 2 V to 5 V source and a 100 nF bypass cap. Estimated power dissipation in the shunt path is (V_IN - 5V) x I_SHUNT.
Solder the exposed thermal pad (EP) of the DFN-8 package to a copper pour on the PCB to achieve the rated theta_JA of approximately 50 C/W. The pad should be connected to VSS for electrical and thermal performance. Estimated: at 25 C ambient and 200 mW dissipation (typical HV shunt operation), the junction temperature rises ~10 C. Without proper EP soldering, the junction temperature can rise above the 150 C limit, causing thermal shutdown.
Place the 100 nF VDD bypass capacitor within 3 mm of pin 8, using a wide ground trace back to pin 5. If the HV shunt is used, place the series resistor as close to pin 8 as possible to minimize parasitic inductance on the high-voltage trace. Keep analog comparator input traces short and away from PWM outputs (RA4/RA5) to avoid coupling. According to the Microchip datasheet, the exposed pad must NOT be left floating - it requires a thermal via array (typically 4-6 vias on 0.5 mm pitch) to inner ground plane.
Do not apply voltages exceeding the absolute maximum on the HV shunt pin without proper current limiting - the internal shunt transistor has limited power dissipation and will enter thermal shutdown at ~150 C junction. Ensure the MCLR pin (RA3, pin 1) has a proper pull-up or voltage clamping if used in a noisy environment, as it can inadvertently trigger resets. Do not load VDD below the 5 mA minimum required for HV shunt regulation, or the regulator will lose regulation.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C) for I suffix; E suffix extends to +125C. AEC-Q100 not qualified - not intended for automotive safety-critical applications.
