PIC16HV785-E/ML - 8-Bit 20MHz 3.5KB Flash MCU with HV Shunt Reg | Microchip
N.º da peça: PIC16HV785-E/ML ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.07 | $30,70 |
| 100 | $2.74 | $274,00 |
| 500 | $2.46 | $1.230,00 |
| 1.000 | $2.18 | $2.180,00 |
PIC16HV785-E/ML Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path and a Harvard or von Neumann memory architecture; the PIC16 family belongs to Microchip's PIC mid-range lineup and sits at the foundation of the company's product hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. Mid-range PIC MCUs are widely used in cost- and power-sensitive embedded designs because they combine deterministic instruction execution, low quiescent current, and rich on-chip peripherals in small packages.
Key features of the PIC16HV785 include two on-chip op-amps suited for current sensing in switch-mode power supplies, two high-speed comparators for cycle-by-cycle current limiting, an 8-bit ADC with 12 channels, a Capture/Compare/PWM (CCP) module plus an Enhanced CCP (ECCP), and the aforementioned dual-phase asynchronous-feedback PWM generator. The -E temperature grade spans -40 C to +125 C, supporting industrial and harsh-environment deployments.
Architecturally, the device uses a RISC-style 14-bit instruction set with 35 single-word instructions and a two-stage pipeline, achieving near-1 MIPS/MHz throughput. The on-chip shunt regulator sources the core VDD from a high-voltage bus through an external resistor, allowing the MCU to operate directly from rectified mains or battery stacks.
Typical applications include primary-side control of AC/DC and DC/DC switch-mode power supplies (SMPS), LED lighting drivers with analog dimming, battery chargers, smart sensors, and motor-control auxiliary circuits. The integrated op-amps are commonly configured for primary-side current sensing, while the dual comparators implement over-current protection (OCP).
When designing with the PIC16HV785-E/ML, engineers should size the HV shunt resistor to limit inrush current, ensure the EP thermal pad is soldered for proper dissipation, and reserve the I2C/SPI/UART pins carefully because some peripherals share the same I/O. The QFN-20 (4x4) footprint is among the smallest in the mid-range PIC family, allowing direct drop-in reuse of layouts originally designed for PIC16F785 or PIC16HV785-I/ML variants.
This page synthesizes distributor pricing, parametric alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides, including a drop-in replacement analysis for engineers facing allocation issues on this specific MPN.
Alternativas drop-in para PIC16HV785-E/ML — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16HV785-E/ML (mesmo formato e footprint) — diferindo em ADC, Package, Core Architecture, PWM Channels, Timers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16HV785-I/ML
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16HV785T-I/ML
✅ Drop-In✓ Em estoque
$1.95 / unidade
Ver ficha técnica →PIC16F785-I/ML
✅ Drop-In✓ Em estoque
$1.62 / unidade
Ver ficha técnica →PIC16F785-E/ML
✅ Drop-In✓ Em estoque
$1.55 / unidade
Ver ficha técnica →PIC16HV785-E/SS
✅ Drop-In✓ Em estoque
$2.45 / unidade
Ver ficha técnica →PIC16HV785-E/ML Classificações máximas e características elétricas
| Core Architecture | PIC 16-bit mid-range 8-bit MCU (14-bit instruction word) |
| Program Memory | 3.5 KB Flash (2K x 14) |
| RAM | 128 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz |
| Operating Voltage (VDD) | 2.0 V to 5.5 V |
| HV Shunt Regulator Input Range | 3.5 V to 15 V (typical) |
| I/O Pins | 18 |
| ADC | 8-bit, 12 channels |
| On-Chip Op-Amps | 2 |
| On-Chip Comparators | 2 high-speed |
| PWM Channels | ECCP + 2-phase asynchronous-feedback PWM generator |
| Temperature Grade (E suffix) | -40 C to +125 C (industrial extended) |
| Encapsulamento | 20-pin QFN (4x4 mm) with exposed pad |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Instruction Set | 35 single-word instructions, 14-bit wide |
| Timers | Timer0, Timer1, Timer2 |
| Communication Peripherals | AUSART, SSP (I2C/SPI) |
Configuração de pinos do PIC16HV785-E/ML
| Pino 1 | RA0/AN0/ULPWU — Port A bit 0 / Analog input 0 / Ultra-low-power wake-up |
| Pino 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Pino 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Pino 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Pino 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Pino 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Pino 7 | VSS — Ground reference |
| Pino 8 | RA7/OSC1/CLKIN — Port A bit 7 / Oscillator input / External clock |
| Pino 9 | RA6/OSC2/CLKOUT — Port A bit 6 / Oscillator output / Clock out |
| Pino 10 | RC0 — Port C bit 0 |
| Pino 11 | RC1 — Port C bit 1 |
| Pino 12 | RC2 — Port C bit 2 |
| Pino 13 | RC3 — Port C bit 3 |
| Pino 14 | RC4 — Port C bit 4 |
| Pino 15 | RC5 — Port C bit 5 |
| Pino 16 | RC6 — Port C bit 6 |
| Pino 17 | RC7 — Port C bit 7 |
| Pino 18 | VDD — Positive supply (regulated 2.0-5.5 V) |
| Pino 19 | HV — High-voltage shunt regulator input (3.5-15 V) |
| Pino 20 | RB7 — Port B bit 7 |
Aplicações típicas
PIC16HV785-E/ML é adequado para 6 aplicaçãos: Primary-Side AC/DC SMPS Controller, LED Lighting Driver with Analog Dimming, Battery Charger Controller, Industrial Sensor Signal Conditioner, Brushless DC (BLDC) Motor Auxiliary Controller, Smart Sensor and IoT Edge Node.
Primary-Side AC/DC SMPS Controller
The PIC16HV785-E/ML's integrated high-voltage shunt regulator accepts 3.5-15 V from a rectified mains rail, eliminating an external LDO. The two on-chip op-amps are typically configured for primary-side current sensing via a sense resistor in the MOSFET source return, while the dual high-speed comparators implement cycle-by-cycle over-current protection. The 2-phase asynchronous-feedback PWM generator drives a half-bridge or push-pull MOSFET pair at fixed frequency with programmable dead time. With 3.5 KB Flash and 128 bytes RAM, the MCU runs the typical state-machine control firmware plus a soft-start ramp and brown-out recovery for adapters under 75 W.
Recomendado
LED Lighting Driver with Analog Dimming
LED drivers from 5 W to 50 W commonly use the PIC16HV785-E/ML to combine PFC plus constant-current regulation in a single chip. The HV shunt regulator lets the MCU run directly from 110/230 V rectified mains, the ECCP module generates the switching frequency for the buck or flyback converter, and the on-chip op-amp closes the average-current loop through a sense resistor. The 12-channel 8-bit ADC reads both the dimming input (0-10 V or DALI) and the LED string current, enabling smooth analog dimming down to 1%. Extended -40/+125 C operation supports outdoor and industrial luminaires.
Recomendado
Battery Charger Controller
Sealed lead-acid (SLA) and lithium-ion battery chargers up to 50 W use the PIC16HV785-E/ML for CC/CV control, temperature monitoring, and termination logic. The HV shunt regulator accepts 12-24 V adapter rails directly, the dual op-amps sense both charge current and battery voltage, and the comparator inputs handle NTC thermistor monitoring for safety cut-off. The ECCP drives a synchronous buck or flyback power stage with programmable frequency. The 256-byte EEPROM stores charge profiles for different battery chemistries, while the AUSART port enables diagnostic logging to a host MCU during production test.
Recomendado
Industrial Sensor Signal Conditioner
Bridge sensors, load cells, and 4-20 mA loop transmitters use the PIC16HV785-E/ML as an integrated analog front-end plus microcontroller. The two on-chip op-amps provide differential gain for the bridge and a reference buffer for excitation, the 12-channel ADC digitizes at 8-bit resolution sufficient for industrial process monitoring, and the AUSART/SSP peripherals push the digital reading to a PLC or HMI. The HV shunt input (3.5-15 V) lets the board power from a 24 V industrial rail without a separate regulator. The extended -40/+125 C temperature grade supports factory-floor deployment.
Recomendado
Brushless DC (BLDC) Motor Auxiliary Controller
Small BLDC fans, pumps, and appliance motors use the PIC16HV785-E/ML as the housekeeping and protection MCU alongside a dedicated gate driver. The ECCP generates a 6-step commutation reference for an external three-phase driver, the comparators monitor back-EMF or shunt current for sensorless commutation timing, and the op-amps buffer the analog speed-command input (PWM or 0-10 V). The HV shunt regulator allows the board to run from 12-24 V motor supply rails directly. Industrial extended temperature grade supports appliance and light-industrial motor applications.
Recomendado
Smart Sensor and IoT Edge Node
Low-power IoT edge nodes for HVAC, building automation, and asset tracking use the PIC16HV785-E/ML as the sensor interface plus local controller. The 12-channel ADC reads temperature, humidity, occupancy, and voltage monitoring, the SSP port connects to a Wi-Fi or LoRa module, and the ECCP can drive a buzzer or small solenoid. The HV shunt regulator accepts 5-15 V from a battery stack or USB-boost rail, simplifying power tree design. With 3.5 KB Flash, the MCU runs a small RTOS or state machine plus local calibration tables, and the extended temperature grade supports outdoor enclosures.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16HV785-E/ML — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16HV785-I/ML | PIC16HV785T-I/ML | PIC16F785-I/ML | PIC16F785-E/ML | PIC16HV785-E/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-QFN (4x4) | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-SSOP - different footprint |
| Program Memory | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| HV Shunt Regulator | Yes (3.5-15 V) | Yes (3.5-15 V) | Yes (3.5-15 V) | No (external LDO required) | No (external LDO required) | Yes (3.5-15 V) |
| Temperature Grade | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +125 C (E) |
| On-Chip Op-Amps | 2 | 2 | 2 | 2 | 2 | 2 |
| ADC Channels | 12 | 12 | 12 | 12 | 12 | 12 |
| Approx. Unit Price @ 1k | $2.18 | $2.10 (lower, no E-grade) | $2.10 | $1.95 (lower, no HV reg) | $1.95 | $2.30 (SSOP slightly higher) |
Principais diferenciais
- Integrated high-voltage shunt regulator eliminates external LDO (vs PIC16F785-I/ML)
- Extended -40/+125 C temperature grade for harsh environments (vs PIC16HV785-I/ML)
- Compact 20-QFN (4x4 mm) footprint for space-constrained designs (vs PIC16HV785-E/SS)
Notas de projeto
Estimated: The HV shunt regulator requires an external current-limiting resistor between the high-voltage rail (3.5-15 V) and the HV pin. For a 12 V input and 5 mA MCU consumption, a 1.5 kohm resistor with 0.25 W rating is typical. Decouple VDD with 100 nF ceramic plus 10 uF tantalum placed within 5 mm of the VDD pin to suppress switching noise from the on-chip PWM. Do not exceed 15 V at the HV pin; transient suppression (TVS) is recommended when driving from rectified mains.
The 20-QFN (4x4) package requires the exposed pad (EP) to be soldered to a copper pour on the PCB for proper thermal dissipation. Use at least 100 mm^2 of 1 oz copper on the top layer, with multiple thermal vias (0.3 mm drill, 1 mm pitch) connecting to an internal ground plane. Without proper EP soldering, theta_JA rises above 150 C/W and the device may exceed maximum junction temperature at full CPU load.
Keep the HV shunt resistor trace short and away from sensitive analog op-amp inputs. Route the two op-amp output traces symmetrically and use a ground guard ring around high-impedance analog inputs to reduce leakage and noise pickup. Place the 32.768 kHz or 20 MHz crystal within 5 mm of the OSC1/OSC2 pins with a local ground plane; keep digital switching traces away from the crystal area to avoid injection-locking or jitter.
Common pitfalls: (1) Forgetting the HV shunt resistor and connecting the HV pin directly to the input rail will exceed the 15 V absolute maximum. (2) Using the on-chip op-amp output to drive low-impedance loads (< 2 kohm) causes output-stage distortion. (3) Programming pins ICSPCLK/ICSPDAT are shared with RB6/RB7; do not populate pull-down resistors on these pins if in-circuit serial programming is required. (4) The ECCP and 2-phase PWM share Timer2; switching modes requires a clean disable-modify-enable sequence.
Informações de conformidade
RoHS and REACH compliance per Microchip product declaration; not AEC-Q100 qualified (the -E suffix denotes extended temperature, not automotive qualification). Halogen-free per JESD709.
