PIC16F753-I/ST - 3.5KB Flash 8-bit MCU 14-TSSOP | Microchip
MPN: PIC16F753-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.94 | $1.94 |
| 10 | $1.71 | $17.10 |
| 100 | $1.42 | $142.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.06 | $1,060.00 |
| 3,000 | $0.92 | $2,760.00 |
PIC16F753-I/ST Overview
A PIC microcontroller (Programmable Interrupt Controller) is a class of 8-bit RISC microcontrollers built around a Harvard architecture with separate program and data buses, enabling single-cycle instruction execution. The PIC16F family sits in Microchip's mid-range lineup and is widely adopted in consumer appliances, motor control, lighting, and battery-powered sensor nodes because of its deterministic interrupt latency, ultra-low power sleep modes, and rich set of on-chip analog peripherals that reduce BOM cost. Hypernyms for this category include: microcontroller -> MCU -> embedded processor -> semiconductor -> integrated circuit.
Key features of the PIC16F753-I/ST include a 9-bit DAC with selectable reference, a programmable switch-mode controller companion (on related PIC16HV753 variants), 2 op-amps/ comparators, 4-channel 10-bit ADC, and nanoWatt Technology power management for sleep currents below 100 nA. The device operates across 2.0V to 5.5V supply rails and supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates without removing the part from the board.
Architecturally, the PIC16F753 uses a 14-bit instruction word RISC core with 8-level hardware stack, addressable 4K program space, and a 256-byte data EEPROM. On-chip peripherals are accessed through a unified SFR bus, and the 9-bit rail-to-rail DAC utilizes a resistor-string architecture trimmed at the factory for monotonic operation. The on-chip 8 MHz HF oscillator is factory calibrated to ±1% across voltage and temperature, eliminating the need for an external crystal in many closed-loop control systems.
Typical applications for PIC16F753-I/ST include LED driver controllers, small appliance controls, battery chargers, fan speed regulators, and sensor signal conditioning. Its analog-rich peripheral set makes it a strong fit for cost-down conversions of designs currently using a baseline MCU plus a discrete DAC or op-amp combination.
When designing with this part, designers should leave PB.6 and PB.7 as ICSP clock/data pins or include test pads for in-circuit programming access. Layout should keep the VDD decoupling capacitor within 5 mm of the supply pin and route the analog AVREF traces away from PWM edges to minimize digital-to-analog coupling on the DAC output.
This page synthesizes distributor pricing, drop-in alternative MPNs with parametric proximity scores, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F753-I/ST — 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 PIC16F753-I/ST (same form factor and footprint) — differing in Package, Timers, Comparators, Core Architecture, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F753-I/SL
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F753-E/ST
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16F1703-I/ST
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16F18313-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F716-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F753-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 (mid-range) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data SRAM | 128 bytes |
| Data EEPROM | 256 bytes |
| Instruction Set | 14-bit RISC, 35 instructions |
| Maximum CPU Speed | 20 MHz (5 MIPS) |
| Internal Oscillator | 8 MHz factory-calibrated |
| Supply Voltage Range | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| On-board DAC | 9-bit, rail-to-rail output |
| ADC | 10-bit, 4 channels |
| Comparators | 2 (with selectable reference) |
| Timers | Two 8-bit, one 16-bit (Timer1) |
| I/O Pins | 11 GPIO (12 GPIO total minus ICSP) |
| Package | TSSOP-14 (4.4 mm body) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead Free | Yes |
PIC16F753-I/ST Pin Configuration
| Pin 1 | VDD — Positive supply voltage 2.0V to 5.5V |
| Pin 2 | CLKR/RA5 — Clock output / GPIO RA5 |
| Pin 3 | RA4/AN3/T1G — GPIO RA4 / Analog input 3 / Timer1 gate input |
| Pin 4 | MCLR/VPP/RA3 — Master Clear / Programming voltage / GPIO RA3 |
| Pin 5 | ICSPCLK/RB6 — In-circuit serial programming clock / GPIO RB6 |
| Pin 6 | ICSPDAT/RB7 — In-circuit serial programming data / GPIO RB7 |
| Pin 7 | AN2/C1OUT/RA2 — Analog input 2 / Comparator 1 output / GPIO RA2 |
| Pin 8 | AN1/C1IN-/RA1 — Analog input 1 / Comparator 1 inverted input / GPIO RA1 |
| Pin 9 | AN0/C1IN+/DACOUT/RA0 — Analog input 0 / Comparator 1 non-inverted input / 9-bit DAC output / GPIO RA0 |
| Pin 10 | RB5/C2IN1-/CCP1 — GPIO RB5 / Comparator 2 input 1- / ECCP1 output |
| Pin 11 | RB4/C2IN+/AN4/CCP2 — GPIO RB4 / Comparator 2 non-inverting input / Analog input 4 / PWM2 output |
| Pin 12 | RB3/CPP1/CCP2/P1A — GPIO RB3 / Comparator positive input / PWM2 / Enhanced PWM output A |
| Pin 13 | RB2 — GPIO RB2 |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16F753-I/ST is suitable for 7 applications: LED Color-Mixing and Dimming Controller, Battery-Powered Sensor Signal Conditioning, Small Appliance Control Board, Brushed DC Motor Speed Regulator, Automotive Lighting and Accessory Module, Battery Charger Termination Controller, Industrial Panel-Meter and Indicator Module.
LED Color-Mixing and Dimming Controller
The PIC16F753-I/ST drives multi-channel LED strings through its 10-bit ECCP PWM and a 9-bit rail-to-rail DAC, both of which are essential for color-temperature blending and constant-current dimming. Designers use the DAC as a programmable reference for the LED current-sense amplifier, while the ECCP deliver phase-correct PWM dimming at up to 20 kHz to avoid audible flicker. The integrated 8 MHz HFINTOSC is factory-calibrated to ±1%, keeping PWM frequency stable across thermal drift in enclosed luminaires. With 3.5 KB of Flash and 128 bytes of RAM, the part runs closed-loop color-temperature compensation with comfort-daylight mode, including serial DMX or 0-10 V input decoding - all in a compact TSSOP-14 footprint that fits inside GU10 and MR16 bulb housings.
Recommended
Battery-Powered Sensor Signal Conditioning
Tight power budgets make the PIC16F753-I/ST ideal for wireless sensor nodes: nanoWatt Technology holds standby current below 100 nA at 2 V, and the 8 MHz internal oscillator eliminates the external crystal that would otherwise drain current when active. Sensor conditioning chains use the on-chip comparators with selectable references as window discriminators, and the 9-bit DAC generates calibrated excitation bias for resistive bridges (load cells, thermistors). The 4-channel 10-bit ADC samples at up to 50 ksps with the internal RC osc as the clock source. ICSP over RB6/RB7 lets OEM firmware be re-flashed on finished boards without uninstalling the module.
Recommended
Small Appliance Control Board
Coffee machines, slow cookers, induction stoves and small kitchen appliances require a single-IC control platform that combines an MCU with analog set-points, zero-crossing triac firing, and a rotary-encoder user interface. The PIC16F753-I/ST serves exactly that role: the ECCP drives the triac pulse train, the 9-bit DAC provides a programmable reference for temperature probe calibration, and the comparator measures zero-crossings directly through an isolated resistor divider. TSSOP-14 plus 2.0 V min supply lets the same hardware run directly from a low-cost non-isolated DC after the rectifier. With 3.5 KB of Flash, the firmware easily fits state-machine code for safety, beeper patterns, and EEPROM-stored user preferences.
Recommended
Brushed DC Motor Speed Regulator
The PIC16F753-I/ST performs closed-loop brushed DC motor control using the 10-bit ECCP with complementary outputs, plus the comparator block to measure back-EMF for sensorless speed feedback at low cost. The 9-bit DAC sets the soft-start acceleration profile through an external op-amp summing network, allowing deterministic ramp curves without fixed resistors. With 5 MIPS throughput at 20 MHz the inner loop runs at 40 µs per cycle, more than adequate for low-RPM appliance fans and small pumps. The TSSOP-14 footprint lets the controller fit alongside the H-bridge MOSFETs on a single-sided PCB. Cycle-by-cycle current limit using the on-chip comparator protects the FETs against stall events.
Recommended
Automotive Lighting and Accessory Module
Although not AEC-Q100 qualified itself, the PIC16F753-I/ST is widely used in non-safety automotive accessories such as ambient lighting, RGB underbody kits, and trailer controllers running from the 12 V vehicle battery. A simple pre-regulator drops the supply to 5 V, where the device runs on the full 2.0 V to 5.5 V range. The 9-bit DAC drives the LED hue channel while the ECCP delivers smooth PWM fade-in / fade-out animations. Inductive loads (relays, solenoids) are switched through external FETs driven by GPIO with optional hardware dead-band control. Designers should keep RB6 and RB7 accessible for factory programming through the OBD-II port or vendor diagnostic pads.
Recommended
Battery Charger Termination Controller
The PIC16F753-I/ST performs voltage-and-temperature terminated charging for 1-4 cell Li-ion and NiMH packs by continuously sampling the cell voltage with the 4-channel 10-bit ADC and switching the charge path through the ECCP output. The 9-bit rail-to-rail DAC generates the precise reference voltage for the comparator-based cell-voltage window discriminator. The internal 8 MHz oscillator removes the need for a costly external crystal - a major BoM saving for low-cost consumer charger designs. 128 bytes of SRAM cover the small state machine required for charge phases (precondition, fast-charge, top-off, termination, trickle). This TSSOP-14 footprint fits inside the charger housing without a daughter board.
Recommended
Industrial Panel-Meter and Indicator Module
Process-control panel meters and stack-light indicators run reliably on the PIC16F753-I/ST thanks to the on-chip analog peripherals. The 9-bit DAC is repurposed as a 4-20 mA loop reference, while the 10-bit ADC digitizes thermocouple or process inputs. Industrial 24 V systems work through a simple resistor pre-regulator dropping to 5 V, where the device runs cleanly. Watchdog timer, brown-out reset at 2.0 V, and high ESD-tolerant GPIO on all pins give the panel-meter module reasonable robustness in factory environments. ICSP on RB6/RB7 enables local re-flash via service-accessible programming pads, simplifying field updates of indicator firmware.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F753-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F753-I/SL | PIC16F753-E/ST | PIC16F1703-I/ST | PIC16F18313-I/ST | PIC16F716-I/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 (ST) | SOIC-14 (SL) | TSSOP-14 (ST) | TSSOP-14 (ST) | TSSOP-14 (ST) | TSSOP-14 (ST) |
| Program Flash | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB | 3.5 KB | 2 KB |
| Data RAM | 128 B | 128 B | 128 B | 256 B | 256 B | 128 B |
| 9-bit DAC | Yes (1 channel) | Yes (1 channel) | Yes (1 channel) | No - replaced by 10-bit PWM | No | No |
| Max CPU Speed | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 20 MHz (5 MIPS) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Unit Price (1 qty, USD) | $1.94 | $1.94 | $2.10 | $1.84 | $1.74 | $1.50 |
Key Differentiators
- Integrated 9-bit rail-to-rail DAC with selectable reference (vs PIC16F1703-I/ST)
- Same TSSOP-14 footprint across the PIC16F753 family for layout reuse (vs PIC16F716-I/ST)
- Extended-temperature grade option in identical package (vs PIC16F753-I/SL)
Design Notes
Estimated: at 20 MHz CPU speed the PIC16F753 generates harmonic content up to about 200 MHz from internal clock tree edges. Place a 100 nF X7R decoupling capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor close to the IC for clean analog reference performance. Keep AVREF traces routed short and parallel to a ground return.
RB6 (ICSPCLK) and RB7 (ICSPDAT) MUST not be held low by external circuitry during reset or programming. Many boards accidentally wire these pins to 4.7 k pull-down resistors for safety, which then prevents ICSP access. Use 10 k pull-ups instead, or provide isolation diodes if the pin must sink key current.
Estimated: the TSSOP-14 package has theta_JA of approximately 90 C/W on a 2-layer 1 oz copper FR-4 board with minimal copper pour. At +85 C ambient the junction rises about 9 C above ambient at any power dissipation below 100 mW. Since the device dissipates well under 50 mW in typical 5 V / 5 MIPS operation, no special thermal relief is needed.
The PIC16F753 includes a Brown-out Reset (BOR) module selectable from 2.0 V to 4.2 V thresholds. Always enable BOR for line-powered applications to protect EEPROM during undervoltage events. For pure battery designs, set BOR to the lowest threshold (2.0 V) to extract maximum energy from depleted cells.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - PIC16F753 is targeted at industrial/consumer markets; for automotive safety applications use PIC16F18456 automotive catalog or higher-grade PIC18F family.
