PIC16F1705T-I/ML - 8-bit MCU, 14KB Flash, 32MHz, 16-QFN | Microchip
MPN: PIC16F1705T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.84 | $1.84 |
| 10 | $1.65 | $16.50 |
| 100 | $1.47 | $147.00 |
| 500 | $1.3 | $650.00 |
| 1,000 | $1.22 | $1,220.00 |
PIC16F1705T-I/ML Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a set of on-chip peripherals such as timers, ADC, communication interfaces, and I/O pins. Within the broader semiconductor taxonomy, MCUs belong to the microcontroller -> embedded controller -> integrated circuit hierarchy. The PIC16F1705 belongs to the PIC16F1xxx enhanced mid-range family, which targets mixed-signal applications where on-chip analog peripherals (op amps, DAC, comparators) coexist with digital logic.
Key features include a 10-bit ADC with up to 12 channels, two operational amplifiers, one 8-bit DAC, two high-speed comparators with a 5-bit DAC reference, Core Independent Peripherals (CLC, COG, Zero Cross Detect), Peripheral Pin Select (PPS), and EUSART plus I²C/SPI serial interfaces. The device operates from 2.3 V to 5.5 V and is rated for the industrial -40 °C to +85 °C temperature range.
Architecturally, the PIC16F1705 uses the enhanced mid-range 16-bit instruction word RISC core with a hardware stack and 49 instruction opcodes, providing deterministic interrupt latency and predictable execution times suitable for real-time control loops. The combination of op amps, comparators, DAC, and PWM enables closed-loop analog control without external components.
Typical applications include LED lighting control with constant-current regulation, battery chargers, IoT sensor nodes, low-cost motor control, and consumer white goods. The QFN-16 footprint simplifies high-density PCB designs where board real estate is constrained.
When designing with this part, allocate the exposed pad (EP) as a continuous copper pour tied to ground to provide both thermal dissipation and a low-impedance ground return. The PPS feature allows flexible assignment of digital peripheral pins to physical I/O, simplifying PCB routing. Note that the 'T' suffix indicates tape-and-reel packaging for high-volume assembly.
Drop-in alternatives for PIC16F1705T-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 PIC16F1705T-I/ML (same form factor and footprint) — differing in ADC, Communication Interfaces, Comparators, I/O Pins, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1704-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1705-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1705T-I/MLVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1614-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F15355T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1705T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1024 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 10-bit, up to 12 channels |
| DAC | 8-bit, 1 channel |
| Operational Amplifiers | 2 on-chip |
| Comparators | 2 high-speed with 5-bit DAC ref |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM Channels | 4 (10-bit) |
| Communication Interfaces | EUSART, I2C, SPI |
| Core Independent Peripherals | CLC, COG, ZCD, PPS |
| I/O Pins | 12 |
| Package | 16-QFN (4x4 mm) with EP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial) |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16F1705T-I/ML Pin Configuration
| Pin 1 | RA2/AN2 — Bidirectional I/O / Analog input channel 2 |
| Pin 2 | RA3/AN3 — Bidirectional I/O / Analog input channel 3 |
| Pin 3 | RA4/AN4 — Bidirectional I/O / Analog input channel 4 |
| Pin 4 | RA5/MCLR/VPP — Bidirectional I/O / Master Clear (Reset, active low) / Programming voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA0/AN0 — Bidirectional I/O / Analog input channel 0 |
| Pin 7 | RA1/AN1 — Bidirectional I/O / Analog input channel 1 |
| Pin 8 | RB4/AN10 — Bidirectional I/O / Analog input channel 10 |
| Pin 9 | RB5/AN11 — Bidirectional I/O / Analog input channel 11 |
| Pin 10 | RB6/ICSPCLK — Bidirectional I/O / In-Circuit Serial Programming clock |
| Pin 11 | RB7/ICSPDAT — Bidirectional I/O / In-Circuit Serial Programming data |
| Pin 12 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Pin 13 | RC0 — Bidirectional digital I/O |
| Pin 14 | RC1 — Bidirectional digital I/O |
| Pin 15 | RC2 — Bidirectional digital I/O |
| Pin 16 | RC3 — Bidirectional digital I/O |
Typical Applications
PIC16F1705T-I/ML is suitable for 6 applications: LED Lighting Control, IoT Sensor Nodes, Battery Chargers, Industrial Control Loops, Consumer White Goods, Power Supply Monitoring.
LED Lighting Control
The PIC16F1705T-I/ML fits LED lighting drivers where constant-current regulation and dimming are required. Its two on-chip op amps enable closed-loop current sensing without external amplifiers, while the 8-bit DAC sets the analog dimming reference and the four 10-bit PWM channels provide high-resolution digital dimming. The 32 MHz core and 50 ns PWM resolution (using the 16-bit PWM at 32 MHz peripheral clock) avoid visible flicker at typical frame rates above 200 Hz. The 2.3 V to 5.5 V supply directly powers from 3.3 V or 5 V LED rails. XLP technology keeps standby current below 50 nA, suitable for battery-backed emergency lighting.
Recommended
IoT Sensor Nodes
The PIC16F1705T-I/ML powers battery-operated wireless sensor nodes for environmental monitoring and home automation. Its eXtreme Low Power (XLP) technology delivers sub-50 nA sleep current and active current of approximately 1.8 mA at 4 MHz / 3.3 V, enabling multi-year battery life. The 10-bit ADC reads temperature, humidity, or light sensors directly, and the op amps condition bridge-type sensors such as load cells. EUSART, I2C, and SPI interfaces connect to radios like the MRF24J40 or RN4871 Bluetooth modules. The 16-QFN (4x4 mm) footprint fits into miniature sensor packages.
Recommended
Battery Chargers
The PIC16F1705T-I/ML is well-suited for linear and switched-mode battery chargers in portable equipment. Two on-chip op amps implement current and voltage sense amplifiers, while the 8-bit DAC programs the constant-current / constant-voltage thresholds. The CLC peripheral combines comparator and PWM signals to implement MPPT or charge-termination logic in hardware without CPU intervention, freeing the core to handle communication. The wide 2.3 V to 5.5 V supply supports 1-cell Li-ion, 2-cell NiMH, and lead-acid chemistries with proper external power components.
Recommended
Industrial Control Loops
In factory automation and process control, the PIC16F1705T-I/ML serves as a low-cost PID controller for valves, small pumps, and heaters. The 32 MHz instruction cycle provides 125 ns loop time, fast enough for thermal control loops with sub-second response. On-chip comparators generate hardware-based emergency shutdown signals independent of software execution, increasing functional safety. The industrial -40 to +85 C rating and RoHS compliance suit factory-floor deployments, and PPS allows the EUSART to be remapped to any pin for flexible PCB routing.
Recommended
Consumer White Goods
The PIC16F1705T-I/ML powers user interfaces and motor-control loops in small appliances such as coffee makers, blenders, and washing machines. The op amps read weight scales or thermistor bridges, while the PWM outputs drive triac-controlled AC loads or small DC motors via MOSFET bridges. CLC and COG peripherals implement zero-cross switching and dead-band insertion in hardware, reducing EMI and improving efficiency. The -40 to +85 C industrial range covers under-cabinet and unventilated appliance environments.
Recommended
Power Supply Monitoring
The PIC16F1705T-I/ML serves as a digital supervisor and sequencer for multi-rail power supplies in telecom and server equipment. The 10-bit ADC monitors voltage, current, and temperature sensors, while EUSART reports telemetry to a host controller. The ZCD peripheral synchronizes measurements to AC line crossings, and the CLC generates hardware-based fault latching without software overhead. Wide 2.3-5.5 V operation allows direct connection to 3.3 V or 5 V auxiliary rails. The 16-QFN package suits high-density PSUs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1705T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1704-I/ML | PIC16F1705-I/ML | PIC16F1705T-I/MLVAO | PIC16F1614-I/ML | PIC16F15355T-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (4x4 mm) | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same | 16-QFN (4x4 mm) - same |
| Flash Memory | 14 KB | 7 KB (-50%) | 14 KB (same) | 14 KB (same) | 14 KB (same) | 14 KB (same) |
| RAM | 1024 B | 512 B (-50%) | 1024 B (same) | 1024 B (same) | 1024 B (same) | 1024 B (same) |
| EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| Maximum CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| On-Chip Op Amps | 2 | 2 (same) | 2 (same) | 2 (same) | 0 (different) | 0 (different) |
| DAC | 8-bit, 1 channel | 8-bit, 1 channel (same) | 8-bit, 1 channel (same) | 8-bit, 1 channel (same) | None | 5-bit, 1 channel |
| Core Independent Peripherals | CLC, COG, ZCD, PPS | CLC, COG, ZCD, PPS (same) | CLC, COG, ZCD, PPS (same) | CLC, COG, ZCD, PPS (same) | CLC, NCO, CWG, PPS (different set) | CLC, CWG, NCO, PPS (different set) |
| AEC-Q100 Qualified | No | No | No | Yes (VAO variant) | No | No |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +125 C (automotive) | -40 C to +85 C (same) | -40 C to +85 C (same) |
Key Differentiators
- Highest-density analog integration in PIC16F1xxx 16-pin family (vs PIC16F1614-I/ML)
- Higher program memory than PIC16F1704 family (vs PIC16F1704-I/ML)
- Industrial-grade temperature range with automotive VAO option (vs PIC16F1705T-I/MLVAO)
Design Notes
The 16-QFN (4x4 mm) package has a center exposed thermal pad that MUST be soldered to a continuous ground-plane copper pour for both electrical performance and thermal dissipation. Use at least 4 thermal vias in the EP copper to ground to provide a low-impedance thermal path. Place the ground pour directly under the MCU with no signal traces cutting through it. The PIC16F1705 datasheet references PCB layout guidelines in section 4.x of the Family Reference Manual (DS40001770D) - follow these recommendations to avoid noise coupling into the ADC inputs.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 12) and a bulk 10 uF capacitor within 5 mm of the IC. The PIC16F1705T-I/ML's analog reference (if used) requires its own 10 nF decoupling capacitor on the VREF+ pin. The device's POR (Power-On Reset) circuit requires VDD rise time between 0.05 V/ms and 50 V/ms; if your supply ramps faster, add an RC delay to the MCLR pin. For battery applications, the Brown-Out Reset (BOR) trip point is configurable in CONFIG1.
Common pitfalls when designing with the PIC16F1705T-I/ML include: (1) Forgetting that pins RA0-RA5 are 5 V tolerant only, not 3.3 V tolerant on the F variant - never apply voltages above VDD. (2) Disabling the MCLR function in CONFIG but leaving pin floating - this causes unreliable resets. (3) Using the internal 32 MHz HFINTOSC without first enabling the PLL via OSCCON - the default configuration runs at 1 MHz. (4) Configuring PPS output functions without first clearing the TRIS bit on the destination pin. Always review the CONFIG words and PPS settings in the device header file before code generation.
Compliance Information
RoHS and REACH compliant per Microchip declaration. Not AEC-Q100 qualified - choose PIC16F1705T-I/MLVAO for automotive. Halogen-free per industry-standard Microchip green-compliance. Conflict-minerals declaration available on Microchip website.
