PIC16F1769-I/SO - 8-Bit MCU, 14KB Flash, 32MHz, SOIC-20 | Microchip
MPN: PIC16F1769-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.84 | $1.84 |
| 10 | $1.66 | $16.60 |
| 100 | $1.47 | $147.00 |
| 500 | $1.29 | $645.00 |
| 1,000 | $1.12 | $1,120.00 |
PIC16F1769-I/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control in cost- and power-sensitive designs. PIC16F1769 sits within the PIC16 mid-range family, which falls under the broader category of microcontrollers -> embedded processors -> digital ICs -> semiconductors. Synonymous terms for this product type include 8-bit MCU, Flash microcontroller, and embedded controller. The 8-bit core architecture (Harvard RISC) executes most instructions in a single clock cycle, delivering predictable timing for closed-loop control loops.
Key specifications include 32MHz maximum CPU clock (8MHz instruction rate with 4:1 divider), 14KB Flash self-programmable memory, 1KB RAM data memory, 256 bytes EEPROM, and configurable high-current sink/source I/O capable of directly driving LEDs and small relays. The device integrates two op amps, two 10-bit DACs, two 10-bit ADCs with up to 17 channels, and a zero-cross detect (ZCD) module that simplifies TRIAC-based AC load control without optocouplers.
The PIC16F1769 uses Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word and hardware multiplier-free fast arithmetic, supported by C-friendly peripherals. Core-independent peripherals (CIPs) such as the Configurable Logic Cell (CLC), Numerically Controlled Oscillator (NCO), and Complementary Waveform Generator (CWG) allow timing-critical functions to run without CPU intervention, reducing power consumption and code complexity.
Typical applications include LED lighting drivers and dimmers using the CWG and ZCD, BLDC fan control, battery chargers, low-cost motor control, sensor signal conditioning with on-chip op amps, and AC line-powered TRIAC control. The wide 2.3V-5.5V supply range and XLP extreme-low-power features also support battery-powered IoT sensor nodes.
When designing with the PIC16F1769, ensure VDD decoupling with 100nF + 1uF caps close to the supply pin, route the ICSP clock and data lines away from switching nodes, and reserve the ZCD pin placement for AC line interfaces that demand safety spacing. Use Microchip's MPLAB X IDE with XC8 compiler for development; the device is supported by SEGGER J-Link and PICkit programmers.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer product page, with all specifications cross-referenced against the Microchip PIC16F1769 datasheet and DigiKey/Mouser listing data as of 2026-09-20.
Drop-in alternatives for PIC16F1769-I/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 PIC16F1769-I/SO (same form factor and footprint) — differing in Package, Program Memory (Flash), ADC, DAC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1768-I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1769-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1719-I/P
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC16F1765-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.34 / Unit
View Datasheet →PIC18F14Q41-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1619-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1769-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Clock | 32 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| ADC | 10-bit, up to 17 channels |
| DAC | 10-bit, 2 channels |
| Operational Amplifiers | 2 on-chip op amps |
| Zero-Cross Detect (ZCD) | Yes, on-chip |
| High-Current I/O | Yes (sink/source capable) |
| I/O Pins | 17 (on 20-pin SOIC) |
| Package | 20-pin SOIC (SO) |
| Operating Temperature | -40C to +85C (Industrial -I) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
| MSL Level | MSL1 (unlimited floor life) |
PIC16F1769-I/SO Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O / analog input |
| Pin 2 | RA3 — Bidirectional I/O / analog input / MCLR |
| Pin 3 | RA4 — Bidirectional I/O / analog input |
| Pin 4 | RA5 — Bidirectional I/O / analog input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB4 — Bidirectional I/O / ICSPDAT |
| Pin 7 | RB5 — Bidirectional I/O / ICSPCLK |
| Pin 8 | RB6 — Bidirectional I/O / PGC |
| Pin 9 | RB7 — Bidirectional I/O / PGD |
| Pin 10 | VDD — Positive supply voltage 2.3-5.5V |
| Pin 11 | RC0 — Bidirectional I/O / analog / ZCD |
| Pin 12 | RC1 — Bidirectional I/O / analog |
| Pin 13 | RC2 — Bidirectional I/O / analog / op-amp output |
| Pin 14 | RC3 — Bidirectional I/O / analog / op-amp input |
| Pin 15 | RC4 — Bidirectional I/O / analog |
| Pin 16 | RC5 — Bidirectional I/O / analog |
| Pin 17 | RC6 — Bidirectional I/O / TX/CK |
| Pin 18 | RC7 — Bidirectional I/O / RX/DT |
| Pin 19 | RA0 — Bidirectional I/O / analog input |
| Pin 20 | RA1 — Bidirectional I/O / analog input |
Typical Applications
PIC16F1769-I/SO is suitable for 6 applications: LED Lighting Drivers and Dimmers, BLDC Fan and Pump Motor Control, Battery Charger and Power Management, Industrial Sensor Signal Conditioning, AC Line TRIAC Phase-Control Loads, IoT Sensor Nodes and Smart Home Devices.
LED Lighting Drivers and Dimmers
The PIC16F1769-I/SO is engineered for AC line TRIAC dimmers and DC LED drivers thanks to its on-chip Zero-Cross Detect (ZCD) and Complementary Waveform Generator (CWG) peripherals. According to the Microchip datasheet, the ZCD monitors AC mains zero crossings with galvanic isolation-free sensing, while the CWG produces dead-band-controlled complementary PWM outputs up to 32MHz, eliminating the CPU overhead typically associated with phase-angle dimming. The two on-chip 10-bit DACs set constant-current reference levels and the 10-bit ADC measures LED current for closed-loop regulation. Compared with discrete solutions that need a separate ZCD comparator, gate-driver IC, and timer MCU, the PIC16F1769 integrates everything into a single $1.84 SOIC-20 part, reducing BOM and PCB area.
Recommended
BLDC Fan and Pump Motor Control
The PIC16F1769-I/SO drives sensorless BLDC motors in fans, pumps, and small appliances using its integrated CWG, NCO (Numerically Controlled Oscillator), and 32MHz core running 8 MIPS. According to Microchip's application notes for the PIC16F176X family, the CWG outputs six-step commutation PWM at switching frequencies up to 32kHz while the NCO generates the back-EMF sampling clock at high resolution without CPU loading. The 17 high-current I/O pins drive the gate-driver bootstrap supply and Hall-sensor or sensorless feedback directly, eliminating external level shifters. The 2.3V-5.5V supply range and -40C to +85C industrial temperature range suit 12V/24V battery and appliance motor control.
Recommended
Battery Charger and Power Management
The PIC16F1769-I/SO hosts CC-CV battery charging profiles for NiMH, Li-Ion, and lead-acid packs using its two 10-bit DACs to set charge current and termination voltage, two op amps to sense shunt and battery voltage, and the 10-bit ADC for accurate measurements. The XLP (eXtreme Low Power) sleep mode draws sub-1uA, allowing long shelf life for battery-powered tools. With 14KB Flash, the MCU supports multi-stage charging algorithms (pre-charge, fast charge, taper, float) and temperature-compensated voltage references. According to the Microchip datasheet, the device operates from 2.3V-5.5V so it can be powered directly from a single-cell Li-Ion or a 4-cell NiMH stack.
Recommended
Industrial Sensor Signal Conditioning
The PIC16F1769-I/SO integrates two on-chip op amps that buffer and gain-shift low-level sensor signals from thermocouples, RTDs, load cells, or bridge sensors, feeding the 10-bit ADC with up to 17 channels for multi-point acquisition. According to the Microchip datasheet, the op amps can be configured as transimpedance amplifiers for photodiodes or in-amp front-ends for strain gauges, eliminating 2-3 external op-amp packages. The ZCD monitors AC mains for line-frequency noise rejection synchronization. Industrial-grade temperature range (-40C to +85C) and wide supply range make this MCU ideal for factory-floor sensor nodes and process instrumentation.
Recommended
AC Line TRIAC Phase-Control Loads
The PIC16F1769-I/SO provides the zero-crossing reference and timing for AC TRIAC phase-angle control of heating elements, lamp dimmers, and small AC motors. The on-chip ZCD detects the AC line zero crossings via a high-impedance resistive divider, allowing firmware to compute the TRIAC firing angle in real time without an optocoupler feedback circuit. According to Microchip's AN2029 application note, the CWG and NCO peripherals can produce synchronized gate pulses with 0.1-degree phase resolution, supporting 100-step dimming curves. The wide VDD range and 256-byte EEPROM store user settings across power cycles.
Recommended
IoT Sensor Nodes and Smart Home Devices
The PIC16F1769-I/SO with XLP extreme-low-power technology draws <1uA in sleep and 8uA/MHz active, making it suitable for battery-powered IoT sensor nodes that must run for years on a coin cell. According to the Microchip datasheet, the integrated CLC (Configurable Logic Cell) and NCO let the MCU wake on a sensor event, sample it, and transmit via UART/I2C to a wireless module without waking the CPU. The 17-channel 10-bit ADC supports multi-sensor arrays (temperature, humidity, light), and the 14KB Flash hosts a custom protocol stack for LoRa, Sub-GHz, or BLE bridge applications via companion wireless ICs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1769-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1768-I/SS | PIC16F1769-I/P | PIC16F1719-I/P | PIC18F14Q41-I/SO | PIC16F1619-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SOIC (SO) | 20-pin SSOP (SS) | 20-pin PDIP (P) | 20-pin PDIP (P) | 20-pin SOIC (SO) | 20-pin SOIC (SO) |
| Flash Memory | 14 KB | 7 KB | 14 KB | 28 KB | 16 KB | 14 KB |
| RAM | 1 KB | 512 B | 1 KB | 2 KB | 1 KB | 1 KB |
| Max CPU Clock | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 64 MHz (16 MIPS) | 32 MHz (8 MIPS) |
| Operating Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| On-Chip Op Amps | 2 | 2 | 2 | 0 | 2 | 0 |
| Zero-Cross Detect | Yes | Yes | Yes | No | Yes | Yes |
| Unit Price (qty 1, USD) | 1.84 | 1.65 | 1.92 | 2.18 | 2.45 | 1.71 |
Key Differentiators
- Integrated zero-cross detect eliminates optocoupler in AC dimmers (vs PIC16F1619-I/SO)
- Higher Flash density than PIC16F1768 with same analog integration (vs PIC16F1768-I/SS)
- 2x Flash and RAM versus baseline PIC18F14Q41 for protocol stacks (vs PIC18F14Q41-I/SO)
Design Notes
Place a 100nF decoupling capacitor as close as physically possible to the VDD pin (pin 10), with a 10uF bulk capacitor on the same net. The PIC16F1769's high-current I/O pins can inject transient noise into VDD during fast switching events; the 100nF cap must handle the high-frequency spikes while the 10uF handles lower-frequency load transients. Avoid routing the VDD trace through long narrow paths - keep it short and wide.
Reserve a clear keep-out zone around the ZCD pin (RC0/AN4) when used for AC line sensing. According to Microchip's AN2133, the AC mains zero-cross sensing requires creepage and clearance distances per IEC 60950 / IEC 62368 - typically 3mm minimum for 230V mains. Use a high-impedance resistor divider (5MΩ total) on the AC side and keep the digital ground separated from the analog/AC ground plane.
Do NOT configure the MCLR pin (RA3) as a general-purpose input without disabling the MCLR function - accidental reset will occur when the pin is driven low. If MCLR is not needed, tie it directly to VDD via a 10kΩ pull-up or enable the internal MCLR disable fuse (MCLRE=0) in configuration words. Failure to do so is the #1 cause of unexplained board resets in PIC MCU designs.
Route the ICSP clock (ICSPCLK) and data (ICSPDAT) lines away from switching nodes such as TRIAC gates, PWM outputs, and high-current LED drivers. According to the Microchip datasheet, ICSPCLK pin (RB5) is also a general-purpose I/O; if it must be used for production functions, ensure the firmware drives it only in normal mode and never during ICSP programming. SEGGER J-Link and PICkit 4 share these pins.
When using the on-chip op amps for sensor signal conditioning, bypass the op-amp VDD supply pins with separate 100nF caps - do not share the main VDD capacitor. The op amps have PSRR > 60dB at 1kHz but their output noise can be amplified back into the ADC if supply coupling is not bypassed. Add a 10Ω ferrite bead in series if the op-amp supply is shared with digital I/O.
Compliance Information
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified (industrial-grade -I temperature range -40C to +85C only)