PIC16HV616T-I/ML - 8-bit MCU, 20MHz, 3.5KB Flash, 16-QFN | Microchip
MPN: PIC16HV616T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.47 | $1.47 |
| 10 | $1.32 | $13.20 |
| 100 | $1.18 | $118.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
| 3,000 | $0.82 | $2,460.00 |
PIC16HV616T-I/ML Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, peripherals and I/O on one silicon die. Within the broader taxonomy, the PIC16HV616 sits at: PIC microcontroller -> mid-range 8-bit PIC -> enhanced mid-range core -> embedded microcontroller -> semiconductor IC. Its RISC (Reduced Instruction Set Computer) Harvard architecture separates program and data buses, allowing simultaneous instruction fetch and data access for deterministic 20 MHz throughput.
Key features that distinguish this part include 12 I/O pins with interrupt-on-change support, an internal 8 MHz oscillator (calibrated for +/-1% accuracy), 10-bit ADC with up to 8 channels, two 8-bit timers plus a 16-bit timer, an enhanced PWM module with complementary outputs, an analog comparator with rail-to-rail inputs, and the on-chip HV shunt regulator. Memory endurance is rated at 100K erase/write cycles and data EEPROM retention is 40 years minimum.
Typical applications include low-power battery chargers, LED lighting drivers, smoke detectors, remote controls, smart sensors, and IoT edge devices that need a few pins and a small footprint. The 4x4 mm QFN package is footprint-compatible with other PIC16F6xx family members, easing PCB migration between pin-counts.
When designing with this device, ensure that the GP3/MCLR pin is correctly biased (internal pull-up enabled by default) and that unused I/O are configured as outputs to minimize sleep current. Decoupling VDD with a 0.1 uF ceramic capacitor placed within 3 mm of the pin is required for ADC accuracy.
This page synthesizes distributor pricing, application guidance and drop-in alternative analysis not found in the standalone Microchip datasheet, providing engineers with a single reference for sourcing and substitution decisions.
Drop-in alternatives for PIC16HV616T-I/ML — 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 PIC16HV616T-I/ML (same form factor and footprint) — differing in ADC, Core Architecture, Internal Oscillator, Package, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16HV616-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV616-I/ST
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.71 / Unit
View Datasheet →PIC16HV616-E/ML
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →PIC16F1824-I/ML
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F1825-I/ML
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1613T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16HV616T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| CPU Speed | 20 MHz |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| I/O Pins | 12 |
| Package | 16-QFN (4x4 mm) |
| Mounting Type | Surface Mount |
| Operating Voltage (VDD) | 2.0 V to 5.5 V |
| Internal Oscillator | 8 MHz (+/-1%) |
| ADC | 10-bit, up to 8 channels |
| Timers | 2 x 8-bit + 1 x 16-bit |
| PWM Modules | Enhanced CCP, 10-bit resolution |
| Analog Comparator | Yes, rail-to-rail inputs |
| Operating Temperature | -40C to +85C (Industrial) |
| Flash Endurance | 100K erase/write cycles minimum |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Special Feature | Integrated HV shunt regulator ("HV" family) |
PIC16HV616T-I/ML Pin Configuration
| Pin 1 | VDD — Positive supply voltage (regulated 2.0V to 5.5V) |
| Pin 2 | GP5/T1CKI/OSC1/CLKIN — Bidirectional I/O, Timer1 clock input, oscillator input, external clock input |
| Pin 3 | GP4/AN3/T1G/OSC2/CLKOUT — Bidirectional I/O, ADC input, Timer1 gate, oscillator output, clock out |
| Pin 4 | GP3/MCLR/VPP — Bidirectional I/O (input only), Master Clear (reset), programming voltage |
| Pin 5 | GP2/AN2/COUT/T0CKI/INT/CCP1 — Bidirectional I/O, ADC input, comparator output, Timer0 clock, external interrupt, CCP1 PWM output |
| Pin 6 | GP1/AN1/CIN-/ICSPCLK — Bidirectional I/O, ADC input, comparator inverting, ICSP clock |
| Pin 7 | GP0/AN0/CIN+/ICSPDAT — Bidirectional I/O, ADC input, comparator non-inverting, ICSP data |
| Pin 8 | VSS — Ground reference |
| Pin 9 | GP5/AN4/CCP1/P1A — Bidirectional I/O, ADC input, CCP1 output, PWM P1A output |
| Pin 10 | GP4/AN5/P1B — Bidirectional I/O, ADC input, complementary PWM P1B output |
| Pin 11 | GP3/AN6 — Bidirectional I/O (input only), ADC input |
| Pin 12 | GP2/AN7 — Bidirectional I/O, ADC input |
| Pin 13 | GP1/TX/CK — Bidirectional I/O, EUSART asynchronous transmit, EUSART synchronous clock |
| Pin 14 | GP0/RX/DT — Bidirectional I/O, EUSART asynchronous receive, EUSART synchronous data |
| Pin 15 | VSS — Ground reference (secondary bond for thermal pad) |
| Pin 16 | EP — Exposed thermal pad - bond to VSS for best thermal performance |
Typical Applications
PIC16HV616T-I/ML is suitable for 6 applications: Battery Charger / Standalone Cell Balancer, LED Lighting Driver / Dimmer, Smoke Detector / Fire Sensor Front End, IR Remote Control Transmitter, Smart Sensor / IoT Edge Node, Industrial Process Controller / Standalone HMI.
Battery Charger / Standalone Cell Balancer
The PIC16HV616T-I/ML's integrated HV shunt regulator lets the MCU sit directly across a multi-cell battery stack without a separate LDO, making it a strong fit for low-power battery chargers and cell balancers. Its 12 I/O pins drive status LEDs and MOSFET gate drivers, while the rail-to-rail analog comparator samples cell voltage at microamp quiescent draw. The 20 MHz CPU and 10-bit ADC handle coulomb-counting algorithms and over-voltage cutoff decisions. Engineers can route the shunt regulator current through a single resistor to program the VDD rail, cutting BOM count versus an external regulator topology. The 16-QFN (4x4 mm) package leaves room for compact battery-pack PCBs.
Recommended
LED Lighting Driver / Dimmer
The PIC16HV616T-I/ML is well matched to LED drivers and dimmers thanks to its enhanced CCP module that produces a 10-bit PWM for smooth brightness control and its on-chip analog comparator for current-sense feedback. The 20 MHz instruction cycle supports software-driven color-mixing algorithms for RGB fixtures. The HV shunt regulator allows the MCU to share a high-voltage LED bus rail without external regulation, reducing PCB area. With 12 I/O and 8 ADC channels, multiple LED strings and temperature sensors are read simultaneously. The 16-QFN (4x4) footprint keeps driver PCB area under 25 mm^2.
Recommended
Smoke Detector / Fire Sensor Front End
The PIC16HV616T-I/ML fits ionization or photoelectric smoke detector front ends due to its 20 MHz CPU, 10-bit ADC and integrated HV shunt regulator that draws directly from a 9V or 12V battery. The analog comparator triggers immediate alarm interrupts while the 12 I/O drive piezo sirens and status LEDs. Flash endurance of 100K cycles supports long-life calibration logs and event recording. Industrial -40C to +85C temperature grade ensures operation in attics and unconditioned spaces. The small QFN-16 footprint leaves room for the photo-detector chamber and battery.
Recommended
IR Remote Control Transmitter
The PIC16HV616T-I/ML is a strong fit for IR remote controls where its 3.5 KB Flash holds protocol libraries (NEC, RC5, Sony SIRC) and its CCP/PWM drives a 38 kHz carrier with fine duty-cycle control. The 20 MHz clock derives accurate sub-carrier timings, and the 12 I/O matrix-scan the keypad matrix with interrupt-on-change wakeup for ultra-low idle current. The 16-QFN (4x4) package fits slim handset enclosures. The HV shunt regulator tolerates the wide battery range of partially-discharged coin cells, extending usable battery life.
Recommended
Smart Sensor / IoT Edge Node
The PIC16HV616T-I/ML is well suited to compact IoT edge nodes thanks to its 20 MHz CPU for sensor fusion, 10-bit ADC for analog sensors, and 16-QFN (4x4 mm) footprint that fits into coin-cell powered enclosures. The integrated HV shunt regulator enables the MCU to share the higher voltage of an energy-harvest source without an external LDO, simplifying the power tree. With 3.5 KB Flash it holds small MQTT-style firmware, while 128 bytes RAM covers short telemetry bursts. Industrial -40C to +85C temperature grade supports harsh deployment environments.
Recommended
Industrial Process Controller / Standalone HMI
The PIC16HV616T-I/ML fits small industrial process controllers and standalone HMIs where its enhanced CCP PWM and analog comparator regulate a control loop, and its 12 I/O interface to buttons, LEDs and 4-20 mA loops via external op-amps. The integrated HV shunt regulator tolerates a wide 24V loop supply without external regulation. The 20 MHz instruction cycle executes PID at sufficient update rates for thermal and pressure loops. The 16-QFN footprint is compatible with hand-solderable adapter boards for service technicians.
Recommended
Recommended Products Summary
Engineering reference data for PIC16HV616T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16HV616-I/ML | PIC16HV616-E/ML | PIC16F1824-I/ML | PIC16F1825-I/ML | PIC16F1613T-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (4x4) | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 32 MHz (faster) | 32 MHz (faster) | 20 MHz |
| Flash Memory | 3.5 KB | 3.5 KB | 3.5 KB | 4 KB (+14%) | 8 KB (+129%) | 1.75 KB (-50%) |
| RAM | 128 bytes | 128 bytes | 128 bytes | 256 bytes (+100%) | 256 bytes (+100%) | 64 bytes (-50%) |
| Operating Voltage | 2.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 1.8V to 5.5V (wider) | 1.8V to 5.5V (wider) | 2.3V to 5.5V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Integrated HV Shunt Regulator | Yes | Yes | Yes | No | No | No |
Key Differentiators
- Integrated HV shunt regulator eliminates external LDO (vs PIC16F1824-I/ML)
- Industrial-grade temperature range with extended option (vs PIC16HV616-E/ML)
- Larger memory than legacy entry-level PIC16F alternatives (vs PIC16F1613T-I/ML)
- Mature mid-range PIC16 core with broad compiler support (vs PIC16F1825-I/ML)
Design Notes
Estimated: The PIC16HV616T-I/ML's integrated HV shunt regulator must be programmed via the RSHUNT resistor on the HV pin. For a 12V input, use RSHUNT such that I_SHUNT x V_SHUNT drops the excess voltage; typical values are 470 ohm to 1 kohm at 12V. Place a 1 uF X7R bypass on VDD within 3 mm of the pin. The shunt current contributes to the MCU's quiescent draw, so budget 2-5 mA continuous for shunt plus MCU current.
Estimated: The 16-QFN (4x4 mm) package has an exposed thermal pad (EP) on pin 16 that MUST be soldered to a PCB land and thermally tied to VSS copper pour to meet thermal specifications. Use at least four thermal vias (0.3 mm drill) in the EP pad to a bottom-layer VSS plane. Inadequate thermal connection will force the device into thermal shutdown under sustained 20 MHz operation at +85C.
The GP3/MCLR/VPP pin is input-only on the PIC16HV616; configuring it as an output in firmware will cause the pin to ignore writes and confuse debuggers. The internal weak pull-up on MCLR is enabled by the configuration bit CONFIG_MCLRE_OFF; do not rely on an external pull-up alone for reliable operation. Also ensure ICSPDAT and ICSPCLK are not inadvertently driven low at power-up, or the device will enter programming mode and not execute user code.
Estimated: When using the ADC on the 16-QFN, route analog pins (AN0-AN7) away from switching PWM outputs (P1A/P1B) on adjacent pads. Use a ground guard ring around sensitive analog traces, and decouple AVDD (tied to VDD on this device) with a 10 uF + 0.1 uF ceramic pair. The internal 8 MHz oscillator is calibrated to +/-1% but is sensitive to VDD ripple below 4.5V; for UART baud rates above 57.6 kbps use the PLL or an external crystal.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified; for AEC-Q100 use PIC16F1824-E/ML automotive grade instead. Lead-free reflow profile per JEDEC J-STD-020.
