PIC16F1764T-I/ST - 8-Bit MCU, 7KB Flash, 32MHz, 14-TSSOP | Microchip
MPN: PIC16F1764T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.13 | $113.00 |
| 500 | $0.99 | $495.00 |
| 1,000 | $0.87 | $870.00 |
| 2,500 | $0.74 | $1,850.00 |
PIC16F1764T-I/ST Overview
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data bus, optimized for low power, deterministic real-time control, and high peripheral integration at low cost. The PIC16F176X sits in the hierarchy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC16 family -> PIC16F176X sub-family, with the PIC® XLP™ (eXtreme Low Power) technology platform enabling deep sleep currents in the nanoamp range. These parts typically serve as the supervisory brain for power conversion, lighting, sensing, and motor/valve control where analog precision and timing accuracy matter more than raw throughput.
Key features include 7KB Flash, 512 bytes SRAM, 256 bytes EEPROM, 10-bit ADC with computation (ADC2), a 10-bit DAC, two op amps, three 16-bit PWMs with complementary outputs and programmable dead-band, zero-cross detect, three configurable logic cells (CLC), peripheral pin select (PPS), high-current I/O capable of 100 mA source/sink, and an internal 32 MHz oscillator. The integrated op amps, ZCD, CLC, and high-current I/O distinguish the 176X family from generic 8-bit MCUs and remove the need for several external analog components.
The architecture uses a Harvard RISC core with 49 instructions and a 14-bit instruction word, executed in two instruction cycles at 32 MHz (8 MIPS). On-chip peripherals share the data bus via a peripheral pin select (PPS) remap scheme that lets designers move digital functions to almost any I/O pin, simplifying PCB routing in tight 14-pin footprints.
Typical applications include LED lighting controllers and drivers, TRIAC/SSR dimming with ZCD, AC power monitoring with op-amp signal conditioning, small BLDC or brushed-DC motor control loops using the 16-bit PWMs, battery chargers, smart sensors with on-chip op-amp front-ends, IoT edge nodes, and white-goods / appliance user interfaces. The high-current I/O lets the MCU directly drive relays, triacs, and LED strings without external drivers.
When designing with this part, ensure that the maximum high-current I/O sink/source budget (per pin and per package) is respected: each pin is rated up to 100 mA but the total package dissipation must stay within thermal limits. Place a 0.1 µF decoupling capacitor on VDD as close as possible to the pin and add a bulk cap of at least 1 µF, while following Microchip AN(s) for oscillator layout and PPS remapping.
This page synthesizes distributor pricing, drop-in TSSOP alternatives from Microchip and competitor families, and practical design notes not found in the standalone Microchip datasheet.
Drop-in alternatives for PIC16F1764T-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 PIC16F1764T-I/ST (same form factor and footprint) — differing in Package, ADC, DAC, Operating Temperature, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1764-I/ST
✅ Drop-In✓ In Stock
$0.61 / Unit
View Datasheet →PIC16F1764-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.82 / Unit
View Datasheet →PIC16F1764T-I/ML
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC16F1765T-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16F1705T-I/ST
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1613-I/ST
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC16F1704-I/SL
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.97 / Unit
View Datasheet →PIC16F1764T-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 RISC (14-bit instruction word) |
| Family | PIC16F176X (PIC® XLP™ 16F) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| ADC | 10-bit with Computation (ADC2) |
| DAC | 10-bit |
| Operational Amplifiers | 2 on-chip op amps |
| Zero-Cross Detect (ZCD) | Yes, on-chip |
| Configurable Logic Cells (CLC) | 3 |
| PWM | 3 x 16-bit with complementary outputs and dead-band |
| Peripheral Pin Select (PPS) | Yes |
| High-Current I/O | Up to 100 mA source/sink per pin |
| Operating Voltage | 2.3 V to 5.5 V |
| Package | 14-pin TSSOP |
| Operating Temperature | -40 °C to +85 °C (industrial, 'I') |
| RoHS Status | Compliant |
PIC16F1764T-I/ST Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Pin 2 | RA5 — Bidirectional I/O; analog input; ICSPCLK |
| Pin 3 | RA4 — Bidirectional I/O; analog input; high-current capable |
| Pin 4 | RA3 — Bidirectional I/O; analog input; high-current capable |
| Pin 5 | RC5 — Bidirectional I/O; analog input; high-current capable |
| Pin 6 | RC4 — Bidirectional I/O; analog input; high-current capable |
| Pin 7 | RC3 — Bidirectional I/O; analog input; PWM output |
| Pin 8 | RC2 — Bidirectional I/O; analog input; PWM output |
| Pin 9 | RC1 — Bidirectional I/O; analog input; PWM output |
| Pin 10 | RC0 — Bidirectional I/O; analog input; PWM output |
| Pin 11 | RA2 — Bidirectional I/O; analog input; op-amp output |
| Pin 12 | RA1 — Bidirectional I/O; analog input; op-amp inverting input |
| Pin 13 | RA0 — Bidirectional I/O; analog input; op-amp non-inverting input |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16F1764T-I/ST is suitable for 7 applications: Dimmable LED Lighting Controller, AC Power Monitoring & Smart Plug, Brushed DC and Small BLDC Motor Control, Battery Charging & Power Bank Controller, Industrial Sensor Signal Conditioning, Home Appliance User Interface & HMI, IoT Edge Node & Sensor Hub.
Dimmable LED Lighting Controller
The PIC16F1764T-I/ST fits dimmable LED lighting controllers because its integrated zero-cross detect (ZCD) hardware detects AC line zero crossings without external optocouplers, and the three 16-bit PWMs with complementary outputs and programmable dead-band drive TRIAC or MOSFET stages for phase-cut or PWM dimming. The high-current 100 mA I/O pins source and sink enough current to directly drive small LED strings and relay coils, eliminating external driver transistors. Per the Microchip PIC16F1764 datasheet, the on-chip 10-bit DAC and two op amps close a feedback loop around the LED current-sense resistor with less than 1% line regulation, while 7 KB of Flash holds dimming curve tables and fade state machines.
Recommended
AC Power Monitoring & Smart Plug
The PIC16F1764T-I/ST supports AC power monitoring in smart plugs and energy meters by combining the on-chip op amps for current-sense signal conditioning with the 10-bit ADC and ZCD for line-frequency reference. The ZCD hardware triggers ADC sampling at predictable line angles, improving RMS calculation accuracy to within 1-2% of a dedicated metering IC. Per the Microchip datasheet, the 256-byte EEPROM stores calibration constants and last-known energy counters across power cycles, while 7 KB of Flash accommodates a basic metrology state machine plus UART/Wi-Fi command parsing for connected plugs.
Recommended
Brushed DC and Small BLDC Motor Control
The PIC16F1764T-I/ST drives brushed-DC and small sensorless BLDC motors using its three 16-bit PWMs with complementary outputs and programmable dead-band, which prevents shoot-through in H-bridge MOSFET stages. The on-chip op amps amplify back-EMF or shunt-current signals directly into the 10-bit ADC, closing the current loop in firmware. Per the Microchip PIC16F1764 datasheet, the 32 MHz core executes an 8-MIPS field-oriented control loop in software, sufficient for sub-100 W BLDC fans and pumps. The high-current I/O also provides direct gate drive for low-side N-MOSFETs without external drivers in cost-sensitive designs.
Recommended
Battery Charging & Power Bank Controller
The PIC16F1764T-I/ST supervises single-cell Li-ion / LiPo charging by using the integrated 10-bit ADC to measure battery voltage, the 10-bit DAC to drive a constant-current reference, and the on-chip op amps for current-sense amplification. CLC blocks combine status LEDs, button input, and charger-state logic without software polling, freeing the core for USB-C PD negotiation or LED fuel-gauge animations. Per the Microchip datasheet, the 2.3-5.5 V operating range tolerates the 4.2 V full-charge Li-ion voltage directly, and 7 KB of Flash holds CC/CV profile tables for multiple chemistries.
Recommended
Industrial Sensor Signal Conditioning
The PIC16F1764T-I/ST conditions industrial sensor outputs using its two on-chip op amps for first-stage amplification of 4-20 mA or 0-10 V transducer signals, followed by 10-bit ADC sampling with the ADC2 computation engine performing averaging and threshold detection in hardware. ZCD supports AC-line synchronous sampling for line-frequency noise rejection. Per the Microchip PIC16F1764 datasheet, PPS remaps UART/SPI to any I/O pin, simplifying PCB layout for multi-channel sensor boards. The industrial -40 °C to +85 °C temperature grade and 5.5 V tolerance suit factory-floor deployments.
Recommended
Home Appliance User Interface & HMI
The PIC16F1764T-I/ST powers appliance user interfaces (washing machines, ovens, HVAC controllers) by scanning capacitive touch or matrix keypads with the CLC hardware, driving seven-segment or character LCDs with the 16-bit PWMs, and switching high-current relays via the 100 mA I/O pins. The integrated zero-cross detect enables synchronized TRIAC dimming of interior lamps, while 512 bytes of SRAM holds HMI state buffers and 256 bytes of EEPROM retains user preferences across power cycles. Per the Microchip PIC16F1764 datasheet, the 14-TSSOP package keeps the MCU footprint smaller than the encoder knob, ideal for tight front-panel layouts.
Recommended
IoT Edge Node & Sensor Hub
The PIC16F1764T-I/ST serves as an IoT edge node aggregating analog sensor data and forwarding it via UART to a Wi-Fi or BLE co-processor. The on-chip op amps amplify low-level sensor outputs, the 10-bit ADC digitizes them, and the CLC blocks implement hardware debounce and threshold detection that wakes the core only on meaningful events. Per the Microchip PIC16F1764 datasheet, the PIC XLP nanoWatt technology delivers sleep currents below 50 nA, enabling years of battery life on a coin cell. The 7 KB Flash accommodates a lightweight sensor-fusion state machine plus AT command parsing.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1764T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1764-I/ST | PIC16F1765T-I/ST | PIC16F1705T-I/ST | PIC16F1613-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Program Memory (Flash) | 7 KB | 7 KB | 9 KB | 14 KB | 7 KB |
| Data SRAM | 512 B | 512 B | 1 KB | 1 KB | 512 B |
| Maximum CPU Frequency | 32 MHz (8 MIPS) | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| 10-bit DAC | Yes | Yes | Yes | No | No |
| On-chip Op Amps | 2 | 2 | 2 | 0 | 0 |
| Zero-Cross Detect (ZCD) | Yes | Yes | Yes | No | No |
| Configurable Logic Cells (CLC) | 3 | 3 | 3 | 0 | 0 |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Key Differentiators
- Highest analog integration in PIC16F176X 14-pin TSSOP family (vs PIC16F1705T-I/ST)
- More Flash than PIC16F1764-I/P DIP variant while keeping surface-mount TSSOP (vs PIC16F1764-I/P)
- More peripherals than PIC16F1613 at equivalent pin count (vs PIC16F1613-I/ST)
Design Notes
Decouple VDD with a 0.1 µF ceramic capacitor placed within 3 mm of pin 1, and add a bulk 1 µF to 10 µF capacitor on the same rail. The PIC16F1764 integrates brown-out reset (BOR) and POR; configure BOR via the configuration words to the application's minimum operating voltage to prevent code execution below safe thresholds.
Although the 14-TSSOP package has modest power dissipation, the 100 mA high-current I/O pins can source enough current to heat the die if all pins are loaded simultaneously. Estimated: 4 pins x 100 mA x 0.4 V (logic-level drop) = 160 mW internal dissipation, well within the 800 mW absolute maximum for the TSSOP package. Distribute high-current loads across pins on opposite sides of the package to balance thermal stress.
Route the high-current I/O traces with at least 0.5 mm copper width to handle 100 mA without excessive voltage drop. Keep analog input traces short and guarded by a ground pour to minimize ADC noise coupling. When using the on-chip op amps, place the feedback components within 5 mm of the op-amp pins to reduce parasitic capacitance that can cause instability above 1 MHz.
The TSSOP-14 and SOIC-14 packages have different pin pitches (0.65 mm vs 1.27 mm); a PCB designed for TSSOP will not accept an SOIC drop-in even though the logical pinout matches. When migrating between package codes (/ST vs /SL), always redraw the land pattern. The 'T' suffix in PIC16F1764T-I/ST indicates tape-and-reel packaging, not a temperature grade - the industrial grade is denoted by 'I'.
The internal 32 MHz oscillator is factory calibrated to ±1% at 3.3 V and 25 °C; over the full -40 °C to +85 °C range, the frequency tolerance widens to ±2-3%. For UART communications above 115200 baud or for timer-accurate PWM at high frequencies, consider adding an external crystal on RA6/RA7 (for 20-pin variants) or using the 32.768 kHz Timer1 clock for asynchronous timing references. The PPS feature can remap UART/SPI/I2C peripherals to most digital I/O pins, simplifying PCB routing.
Compliance Information
Industrial temperature grade -40 °C to +85 °C. Not AEC-Q100 qualified; AEC-Q100 automotive variants exist in the broader PIC16F17xxx family. RoHS/REACH compliant per Microchip product page. Halogen-free per Microchip packaging materials declaration.