PIC16HV785T-I/SS - 20MHz 8-Bit MCU 3.5KB Flash 20-SSOP | Microchip
MPN: PIC16HV785T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16HV785T-I/SS Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, non-volatile EEPROM, and integrated peripherals such as timers, comparators, ADCs, and communication interfaces. The PIC16HV785 belongs to the mid-range PIC16F family (PIC16 -> PIC mid-range 8-bit MCU -> 8-bit microcontroller -> microcontroller -> semiconductor IC), distinguished by its integrated dual op-amps, dual high-speed comparators, two-phase asynchronous feedback PWM, and 12-bit ADC - making it a peripheral-rich mixed-signal MCU optimized for power-conversion feedback loops.
Key features include an integrated shunt regulator (HV variant), 18 digital I/O pins, 10-bit ADC with multiple input channels, two on-chip operational amplifiers, two high-speed comparators with programmable reference, a 14-bit PWM module with complementary outputs, and a 20MHz internal oscillator. The HV internal regulator tolerates 3.5V to 15V VDD and simplifies design by removing the external 5V LDO in many applications.
The PIC16HV785 uses a RISC Harvard architecture with 35 single-word instructions, providing deterministic interrupt response and 200ns instruction cycle at 20MHz. On-chip in-circuit serial programming (ICSP) enables firmware updates after PCB assembly, and the wide 2.0V-15V (logic) operating range supports both 3.3V and 5V/12V system rails typical in lighting, motor control, and battery management.
Typical applications include LED lighting drivers, DC-DC converter control, battery chargers, switched-mode power supplies (SMPS), fan and pump motor control, and industrial sensor signal conditioning. The combination of integrated op-amps, comparators, and PWM makes the PIC16HV785 especially well-suited to closed-loop control where feedback divider and current-sense amplification are performed on-chip.
When designing with this part, take care to size the shunt regulator resistor according to total current draw and supply voltage to maintain a stable internal rail. Decouple VDD with 100nF and 10uF capacitors placed close to the IC, and reserve the ICP/ICSP pins for in-circuit programming access.
This page synthesizes distributor pricing, drop-in alternative listings, and practical design notes beyond the manufacturer datasheet to support sourcing and BOM decisions.
Drop-in alternatives for PIC16HV785T-I/SS — 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 PIC16HV785T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, ADC, I/O Pins, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16HV785-I/SS
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC16HV785T-I/ML
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC16HV785-E/SS
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC16HV785T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV753T-I/ST
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →PIC16HV785T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC Harvard |
| Family | PIC16HV785 (PIC16F mid-range) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| RAM | 128 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz (200 ns instruction cycle) |
| Supply Voltage (VDD logic) | 2.0 V to 5.5 V |
| HV Supply Voltage (VHV) | 3.5 V to 15 V (shunt-regulated) |
| I/O Pins | 18 digital I/O |
| ADC | 12-channel, 10-bit |
| Operational Amplifiers | 2 on-chip |
| Comparators | 2 high-speed |
| PWM | Two-phase asynchronous feedback, 10-bit resolution |
| Timers | 2x 8-bit, 1x 16-bit |
| Communication | I2C/SPI (AUSART) |
| In-Circuit Programming | ICSP |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 20-SSOP (Shrink Small-Outline Package) |
| RoHS Status | Compliant |
PIC16HV785T-I/SS Pin Configuration
| Pin 1 | RA0/AN0/ICSPDAT — PORTA bit 0 / analog input 0 / ICSP data |
| Pin 2 | RA1/AN1 — PORTA bit 1 / analog input 1 / op-amp output |
| Pin 3 | RA2/AN2 — PORTA bit 2 / analog input 2 / VREF- |
| Pin 4 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / VREF+ |
| Pin 5 | RA4/AN4 — PORTA bit 4 / analog input 4 / comparator input |
| Pin 6 | RA5/MCLR/VPP — PORTA bit 5 / Master Clear / programming voltage |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/RA7 — Crystal oscillator input / PORTA bit 7 |
| Pin 9 | OSC2/RA6 — Crystal oscillator output / PORTA bit 6 |
| Pin 10 | RC0 — PORTC bit 0 / PWM output |
| Pin 11 | RC1 — PORTC bit 1 / PWM output |
| Pin 12 | RC2 — PORTC bit 2 / PWM output |
| Pin 13 | RC3 — PORTC bit 3 / comparator reference |
| Pin 14 | RC4 — PORTC bit 4 / I2C/SPI |
| Pin 15 | RC5 — PORTC bit 5 / I2C/SPI |
| Pin 16 | RC6 — PORTC bit 6 / AUSART TX |
| Pin 17 | RC7 — PORTC bit 7 / AUSART RX |
| Pin 18 | RB4 — PORTB bit 4 / ICSP clock |
| Pin 19 | RB5 — PORTB bit 5 |
| Pin 20 | VHV — High-voltage shunt regulator input (3.5-15 V) |
Typical Applications
PIC16HV785T-I/SS is suitable for 6 applications: LED Lighting Drivers, Switched-Mode Power Supplies (SMPS), Battery Chargers, BLDC Motor and Fan Control, Industrial Sensor Signal Conditioning, Power Metering and Energy Monitoring.
LED Lighting Drivers
The PIC16HV785T-I/SS fits LED lighting driver designs because its integrated two-phase PWM, dual high-speed comparators, and dual op-amps implement primary-side current regulation with a single IC. The 10-bit PWM provides 1024 dimming steps for smooth brightness control, while the on-chip op-amps amplify the current-sense shunt signal without external analog components. The HV shunt regulator accepts a wide 3.5-15V input, removing the need for an external LDO in 12V track-lighting fixtures. Engineers typically configure the 10-bit ADC for thermal feedback via an NTC, enabling closed-loop thermal fold-back to extend LED lifetime.
Recommended
Switched-Mode Power Supplies (SMPS)
The PIC16HV785T-I/SS is widely used in digital SMPS control because it pairs a 20 MIPS core with the analog peripherals needed for primary-side regulation. The two on-chip op-amps condition current-mode feedback and output-voltage sensing, while the comparators provide cycle-by-cycle current limit at 200ns response. The PIC16HV785 datasheet documents reference firmware for flyback, boost, and PFC topologies. The HV internal regulator allows the MCU to operate directly from the 12-15V auxiliary winding, simplifying the bias supply and reducing BOM count by one LDO.
Recommended
Battery Chargers
The PIC16HV785T-I/SS suits single- and multi-cell battery charger applications because its integrated ADC monitors battery voltage and charge current while the PWM drives the power-stage MOSFET. The dual comparators enable termination detection (delta-V, dT/dt) with no external analog ICs. The 256-byte EEPROM stores charging profiles for different battery chemistries, and the 12-bit ADC resolution supports precise CC/CV transition control. Industrial temperature grade ensures reliable operation across automotive and solar charging environments.
Recommended
BLDC Motor and Fan Control
The PIC16HV785T-I/SS drives small BLDC fans and pumps by combining its 10-bit complementary PWM, two high-speed comparators for back-EMF zero-crossing, and 10-bit ADC for speed/torque sensing. The two on-chip op-amps condition the back-EMF signal directly, eliminating external op-amp ICs. At 20 MHz, the firmware can implement sensorless FOC or trapezoidal commutation at switching frequencies above 25 kHz with sub-microsecond loop time, suitable for HVAC blowers and small appliance motors.
Recommended
Industrial Sensor Signal Conditioning
The PIC16HV785T-I/SS serves as a smart analog front-end for industrial sensors because it integrates two op-amps for signal amplification, a 12-channel ADC for multi-sensor multiplexing, and an AUSART/I2C interface for digital output. Its HV input tolerance simplifies integration with 24V industrial loops by sharing the same supply rail as field devices. The 128-byte RAM supports local calibration storage, and the 20 MHz core runs polynomial compensation routines for thermocouple linearization in 35 microseconds - well within typical 100 ms loop budgets.
Recommended
Power Metering and Energy Monitoring
The PIC16HV785T-I/SS is well matched to single-phase power-meter designs because its dual op-amps simultaneously condition voltage and current shunt signals, while the 10-bit ADC digitizes both at 20 kSPS for accurate harmonic content capture. The two-phase PWM can drive a calibration LED or LCD bias, and the 256-byte EEPROM stores calibration constants and tamper counters. The HV internal regulator allows the meter to run from the 12V auxiliary supply without an external LDO, reducing the standby power below 50 mW.
Recommended
Recommended Products Summary
Engineering reference data for PIC16HV785T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16HV785-I/SS | PIC16HV785T-I/ML | PIC16HV785-E/SS | PIC16HV785T-I/SO | PIC16HV753T-I/ST |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-QFN (ML) - same die, smaller footprint | 20-SSOP - same | 20-SOIC-300 (wide body) | TSSOP-14 - smaller |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 2 KB |
| RAM | 128 B | 128 B | 128 B | 128 B | 128 B | 128 B |
| Maximum CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 18 | 18 | 18 | 18 | 18 | 14 |
| Integrated HV Regulator (3.5-15V) | Yes | Yes | Yes | Yes | Yes | Yes (HV753 family) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C |
| On-Chip Op-Amps | 2 | 2 | 2 | 2 | 2 | 0 |
| ADC Resolution / Channels | 10-bit / 12 ch | 10-bit / 12 ch | 10-bit / 12 ch | 10-bit / 12 ch | 10-bit / 12 ch | 10-bit / 8 ch |
Key Differentiators
- Integrated 3.5-15V HV shunt regulator (vs PIC16F785T-I/SO)
- Two on-chip operational amplifiers (vs PIC16HV753T-I/ST)
- Tape-and-reel packaging optimized for high-volume assembly (vs PIC16HV785-I/SS (tube))
Design Notes
Estimated: VHV current draw including ADC, op-amps, and core is roughly 5 mA active / 50 uA sleep. At VHV=12 V, size the dropping resistor R_SHUNT = (12 V - 5 V) / 5 mA = 1.4 kohm (use 1.5 kohm standard). Always place a 100 nF X7R decoupling capacitor within 5 mm of the VHV pin and a 10 uF bulk capacitor on the internal VDD rail. For supply voltages above 13 V, derate R_SHUNT power: P = (VHV - 5 V)^2 / R = (7 V)^2 / 1.5 kohm = 33 mW - use a 1/8 W part for safety margin.
The 20-SSOP package has a 0.65 mm pin pitch. Route signals on inner layers to escape the dense perimeter pins, and use a ground pour under the IC body to provide a thermal sink - the SSOP theta_JA is approximately 95 C/W. Keep analog op-amp and comparator traces short (under 10 mm) and guard them with a ground trace to prevent digital switching noise from coupling into feedback signals. Reserve ICSP pins (RA0/ICSPDAT, RB4/ICSPCLK) with test-pad access for production programming.
Do not assume MCLR (pin 6) can be left floating on the PIC16HV785 - it requires a 10 kohm pull-up to VHV for proper reset behavior. Missing this pull-up is the single most common cause of intermittent start-up failures in HV PIC designs. Also avoid sourcing more than 25 mA from any single I/O pin or 200 mA across the entire port group - the PIC16HV785 datasheet notes these as absolute maximum ratings. For op-amp inputs, keep common-mode voltage within VSS to VDD; exceeding this range forces the output into saturation and may damage the input stage over time.
Compliance Information
RoHS/REACH compliance per Microchip product declaration. AEC-Q100 not qualified - contact Microchip for -Q automotive versions if required. Industrial temperature grade only on -I/SS variants.
