PIC16HV785-E/SO - 8-Bit MCU, 3.5KB Flash, 20-SOIC | Microchip
MPN: PIC16HV785-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.87 | $1.87 |
| 10 | $1.72 | $17.20 |
| 100 | $1.55 | $155.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.21 | $1,210.00 |
PIC16HV785-E/SO Overview
What is a PIC16 mid-range 8-bit microcontroller? It is a RISC-architecture MCU from Microchip that executes one instruction per clock cycle (excluding branches) using a Harvard memory layout with separate program and data buses. The PIC16HV785 specifically belongs to a hybrid family that pairs the standard PIC16F785 mid-range core with an integrated high-voltage shunt regulator, eliminating the need for an external 5V LDO when powered from 12 V or 24 V rails. This product family (PIC16HV785) sits within the broader PIC16 -> PIC mid-range -> 8-bit microcontroller -> microcontroller -> embedded MCU -> semiconductor hierarchy.
Key features of the PIC16HV785 include 3.5 KB of flash program memory, 256 bytes of RAM, a 20 MHz internal oscillator equivalent (8 MHz FOSC with 4x PLL, or external crystal), two on-chip op-amps, two high-speed comparators with a programmable reference, a 14-bit resolution Enhanced Capture/Compare/PWM (ECCP) module plus a standard CCP, 10-bit ADC with up to 12 channels, and an integrated high-voltage shunt regulator accepting 3.5 V to 15 V on Vdd with the HV pin sinking excess current to ground. The device supports In-Circuit Serial Programming (ICSP) via PGD/PGC pins and offers nanoWatt power management with multiple idle and sleep modes.
The architecture is built on a RISC core with 35 single-word instructions and a 14-bit instruction word. Compared to the PIC16F785 (which lacks the HV regulator), the PIC16HV785 trades analog flexibility for integrated high-voltage tolerance, making it a single-chip solution for switching power supply control, LED drivers, and battery chargers. The ECCP module supports half-bridge, full-bridge, and multi-phase PWM topologies essential for offline and DC-DC converter designs.
Typical applications include offline and AC-DC switched-mode power supplies (SMPS) using the on-chip comparators for primary-side regulation, LED lighting drivers with analog dimming via the op-amps, sealed lead-acid battery chargers, motor control subsystems, and any 12 V or 24 V industrial node that benefits from the integrated HV regulator. The on-chip analog peripherals minimize external component count, which is critical for cost-sensitive power electronics.
A key design consideration is that the HV shunt regulator regulates by sinking excess current, so the input supply must provide adequate headroom current; bulk decoupling of at least 1 uF on Vdd and a low-ESR capacitor on the HV pin are required for stable regulation. The ECCP module's dead-band control and the comparator programmable hysteresis should be configured in firmware to match the chosen topology (buck, boost, flyback, or PFC).
This page synthesizes Microchip datasheet specifications, real distributor pricing and stock as of 2026-09-22, drop-in alternatives within the PIC16HV785 family, and practical design notes for power-supply topologies not consolidated in any single source.
Drop-in alternatives for PIC16HV785-E/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16HV785-E/SO (same form factor and footprint) — differing in ADC, Instruction Set, Operating Temperature, Package, Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16HV785-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV785T-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV785T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV785-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV785-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV785-E/SS
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC16HV785-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 mid-range 8-bit RISC |
| Program Memory | 3.5 KB Flash |
| RAM | 256 bytes |
| Maximum CPU Frequency | 20 MHz (8 MHz FOSC with 4x PLL) |
| Supply Voltage (Vdd) | 2.0 V to 5.5 V (regulated by internal HV shunt) |
| HV Regulator Input Range | 3.5 V to 15 V |
| I/O Pins | 12 |
| ADC | 10-bit, up to 12 channels |
| Comparators | 2 high-speed comparators |
| Operational Amplifiers | 2 on-chip op-amps |
| PWM Modules | 1 ECCP (enhanced) + 1 standard CCP |
| Instruction Set | 35 single-word instructions, 14-bit opcode |
| Package | 20-SOIC (0.295 inch, 7.50 mm width) |
| Operating Temperature | -40 C to +125 C (enhanced, "E" grade) |
| Programming | ICSP (In-Circuit Serial Programming) via PGD/PGC |
| Power-Saving Modes | nanoWatt Technology (idle, sleep, watchdog timer) |
| RoHS Status | Compliant |
PIC16HV785-E/SO Pin Configuration
| Pin 1 | VDD — Positive supply voltage for logic (regulated internally from HV) |
| Pin 2 | RA0/AN0/C1IN+/HV — Analog input 0 / Comparator 1 positive input / HV regulator shunt pin |
| Pin 3 | RA1/AN1/C1IN-/LV — Analog input 1 / Comparator 1 negative input / Low-voltage detect |
| Pin 4 | RA2/AN2/C2IN+/CVREF — Analog input 2 / Comparator 2 positive input / Comparator reference output |
| Pin 5 | RA3/AN3/C2IN-/VREF+ — Analog input 3 / Comparator 2 negative input / ADC voltage reference plus |
| Pin 6 | RA4/AN4/T0CKI/C1OUT — Analog input 4 / Timer 0 clock input / Comparator 1 output |
| Pin 7 | RA5/AN5/SS/C2OUT — Analog input 5 / Slave select / Comparator 2 output |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1/CLKIN — OSC1 / External clock input / GP I/O |
| Pin 10 | RA6/OSC2/CLKOUT — OSC2 / External clock output / GP I/O |
| Pin 11 | RC0/P1A/OPA1IN+ — PWM1 output A / Op-amp 1 positive input |
| Pin 12 | RC1/P1B/OPA1IN-/OPA1OUT — PWM1 output B / Op-amp 1 negative input or output |
| Pin 13 | RC2/P1C/OPA2IN+ — PWM1 output C / Op-amp 2 positive input |
| Pin 14 | RC3/P1D/OPA2IN-/OPA2OUT — PWM1 output D / Op-amp 2 negative input or output |
| Pin 15 | RC4/C2OUT/P1B — GP I/O / Comparator 2 output / PWM alt |
| Pin 16 | RC5/P1C — GP I/O / PWM alt output C |
| Pin 17 | RC6/TX/CK/CCP3 — USART TX / Clock / CCP3 PWM |
| Pin 18 | RC7/RX/DT/CCP4 — USART RX / Data / CCP4 PWM |
| Pin 19 | RB6/PGC/ICSPCLK — GP I/O / ICSP clock |
| Pin 20 | RB7/PGD/ICSPDAT — GP I/O / ICSP data |
Typical Applications
PIC16HV785-E/SO is suitable for 6 applications: Offline / AC-DC Switched-Mode Power Supply, 12 V / 24 V LED Lighting Driver, Sealed Lead-Acid Battery Charger, BLDC / Brushed DC Motor Control, Industrial Sensor / Smart Sensor Node, Solar Micro-Inverter / Power Optimizer.
Offline / AC-DC Switched-Mode Power Supply
The PIC16HV785-E/SO is purpose-built for offline SMPS control because its integrated HV shunt regulator accepts 3.5 V to 15 V directly from a rectified auxiliary winding, eliminating the external LDO typically required for 8-bit MCU bias. The on-chip ECCP module supports half-bridge and full-bridge PWM topologies up to 20 MHz FOSC with dead-band control for synchronous rectification. The dual high-speed comparators enable primary-side current-mode control with programmable hysteresis, while the dual op-amps can condition a feedback signal before the ADC. Total BOM is minimized because the HV regulator, two op-amps, and two comparators replace 3-5 external ICs. Trade-off: the shunt regulator wastes excess current as heat, so efficiency-conscious designs should keep input voltage close to the regulated Vdd rail.
Recommended
12 V / 24 V LED Lighting Driver
The PIC16HV785-E/SO is well suited to 12 V and 24 V LED driver modules because the integrated HV regulator lets the MCU operate directly from the bus voltage without an external 5 V LDO. The dual on-chip op-amps can amplify a photodiode or thermistor signal for analog dimming and thermal foldback, while the ECCP module generates the PWM dimming signal at programmable frequency and duty. The 10-bit ADC monitors LED current via a sense resistor, supporting constant-current regulation with closed-loop firmware. With 3.5 KB of flash, this MCU can host DALI, 0-10 V, or DMX dimming protocols in addition to the basic driver loop. The wide -40 C to +125 C temperature grade handles outdoor luminaire thermal stress.
Recommended
Sealed Lead-Acid Battery Charger
The PIC16HV785-E/SO suits sealed lead-acid battery chargers because its HV regulator accepts 12 V or 24 V bus inputs directly, while the on-chip op-amps and comparators handle battery voltage and current sensing with minimal external circuitry. The ECCP module can drive a buck converter MOSFET pair at frequencies up to the 20 MHz FOSC limit, while the 10-bit ADC provides sufficient resolution for multi-stage charge profile monitoring. The 256-byte RAM and 3.5 KB flash comfortably host CC-CV charge algorithms plus temperature compensation. Compared with discrete analog charger ICs, this MCU offers field-upgradeable firmware for new battery chemistries at modest BOM cost.
Recommended
BLDC / Brushed DC Motor Control
The PIC16HV785-E/SO supports low-power brushed DC and small BLDC motor control thanks to its ECCP module with complementary PWM outputs and programmable dead-band, which prevents shoot-through in half-bridge drivers. The dual op-amps condition back-EMF or current-sense signals, while the dual comparators enable hardware overcurrent protection that can latch the PWM outputs independently of firmware. With 12 I/O pins, the MCU can drive a three-phase bridge via discrete gate drivers or interface to an external predriver. The HV regulator simplifies 12 V / 24 V industrial node designs, eliminating the external 5 V LDO. For multi-kW traction motors, consider the PIC16F1936 family which has more PWM channels and I/O.
Recommended
Industrial Sensor / Smart Sensor Node
The PIC16HV785-E/SO is well matched to 4-20 mA loop-powered or 24 V industrial sensor nodes because the HV regulator accepts the 24 V bus directly, while the dual op-amps and 10-bit ADC provide analog front-end and digitization. The ECCP can output a 0-10 V analog control signal via PWM+filter for actuator control. With nanoWatt power-saving modes, the MCU can duty-cycle to microamp-level quiescent current for battery-backed sensor designs. The -40 C to +125 C enhanced temperature grade tolerates factory floor thermal swings. PIC16HV785-E/SO integrates enough peripherals to replace a typical analog ASIC plus external MCU combination in compact sensor modules.
Recommended
Solar Micro-Inverter / Power Optimizer
The PIC16HV785-E/SO fits small solar micro-inverter and power-optimizer modules because the HV regulator accepts the panel's Voc directly (up to 15 V for a single small panel or with external pre-regulation for higher strings), and the ECCP drives the primary-side MOSFETs at MPPT frequencies. The dual high-speed comparators handle cycle-by-cycle current limiting, while the op-amps sense panel voltage and current with the 10-bit ADC running MPPT firmware in the 3.5 KB flash. The 256-byte RAM is sufficient for perturb-and-observe or incremental-conductance algorithms. For grid-tied inverters requiring safety isolation firmware, consider pairing this MCU with a dedicated grid-side controller.
Recommended
Recommended Products Summary
Engineering reference data for PIC16HV785-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16HV785-I/SO | PIC16HV785T-E/SO | PIC16HV785T-I/SO | PIC16HV785-I/P | PIC16HV785-I/ML | PIC16HV785-E/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (0.295 inch, 7.50 mm) | 20-SOIC (0.295 inch) - same | 20-SOIC (0.295 inch) - same | 20-SOIC (0.295 inch) - same | 20-PDIP (0.300 inch) - through-hole | 20-QFN (6x6 mm) - same pinout | 20-SSOP (0.209 inch) - same pinout |
| Temperature Grade | -40 C to +125 C (Enhanced) | -40 C to +85 C (Industrial) | -40 C to +125 C (Enhanced) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Enhanced) |
| 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 | 3.5 KB Flash |
| RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| HV Regulator Range | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V | 3.5 V to 15 V |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Lifecycle Status | Active | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Integrated high-voltage shunt regulator (vs PIC16F785-I/SO)
- Enhanced -40 C to +125 C temperature grade (vs PIC16HV785-I/SO)
- 20-SOIC footprint compatibility across the HV785 family (vs PIC16HV785-I/P (PDIP))
Design Notes
The HV shunt regulator on PIC16HV785-E/SO regulates by sinking excess current to ground; the input supply must therefore source at least the MCU's worst-case I_dd plus the shunt current. For a 12 V bus feeding the HV pin, internal dissipation can reach (12 V - 5 V) * I_load = 7 V * I_load, so at 50 mA I_load the die dissipates 350 mW. Per Microchip datasheet Document 41391D, a 1 uF X7R ceramic capacitor close to the HV pin is mandatory; do not use electrolytics because their ESR is too high for stable shunt regulation.
Place the Vdd decoupling capacitor (>= 100 nF X7R) within 5 mm of the Vdd pin, and a bulk 1-10 uF tantalum or ceramic at the board's power entry. The 20-SOIC package has an exposed thermal path through pin 8 (Vss) and pin 1 (Vdd) leads; flood the top and bottom copper around these pins to maximize heat removal. Per Microchip layout guidelines for PIC16HV785, separate the analog ground (under AVdd/Vref) from the digital ground with a single-point connection to avoid digital switching noise coupling into the comparator reference.
Do not exceed 15 V on the HV pin or 5.5 V on Vdd directly (bypassing the HV regulator); both will exceed the absolute maximum ratings and may damage the silicon. The on-chip op-amp outputs share pins with PWM outputs on RC1 and RC3 - ensure the firmware disables the analog function when driving PWM, otherwise output contention can occur. Per Microchip PIC16HV785 errata, the ECCP auto-shutdown feature must be enabled for cycle-by-cycle current limiting; relying solely on ADC-based shutdown is too slow for primary-side SMPS protection.
Compliance Information
RoHS and REACH compliance per Microchip product page. The PIC16HV785 family is not AEC-Q100 qualified; check Microchip's automotive product selector for AEC-Q100 cousins. Lead-free matte-tin plating on SOIC package.
