PIC16F1934-I/PT - 8-bit 32MHz 7KB Flash MCU | Microchip
MPN: PIC16F1934-I/PT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.62 | $2.62 |
| 10 | $2.34 | $23.40 |
| 100 | $2.08 | $208.00 |
| 500 | $1.85 | $925.00 |
| 1,000 | $1.66 | $1,660.00 |
PIC16F1934-I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), non-volatile storage (EEPROM), and programmable I/O peripherals on one die. PIC16F1934 belongs to the broader hierarchy: MCU -> 8-bit MCU -> PIC16 enhanced mid-range family -> nanoWatt XLP ultra-low-power family -> flash-based microcontrollers with LCD driver. XLP technology targets battery-powered applications by combining deep sleep currents in the order of tens of nA with multiple low-power operating modes and active mode currents around a few mA.
Key features of the PIC16F1934-I/PT include a 12-channel 10-bit ADC, two 8-bit timers and three timers overall (Timer0, Timer1, Timer2), a hardware USART, MSSP supporting I2C and SPI, an integrated LCD driver (up to 36 segments typical for the family), internal 16 MHz and 32 kHz oscillators with PLL, multiple power-managed modes (Run, Idle, Sleep), and integrated capacitive mTouch sensing support. The device operates from 1.8 V to 5.5 V across the full industrial temperature range, which is well-aligned with 2xAA battery and 3.3 V / 5 V mixed-rail systems.
Architecture-wise, the PIC16F1934 implements Microchip's enhanced mid-range 8-bit RISC core with 49 instruction word set, 16-level hardware stack, and deterministic 4-clock-per-instruction cycle (8 MHz internal = 2 MIPS per MHz). The 10-bit ADC supports up to 12 analog channels depending on package pin count. The 44-pin TQFP package exposes the maximum I/O and analog channel count for the family.
Typical applications include battery-powered consumer products with LCD segments (thermostats, weighing scales, remote controls, electric toothbrushes), home appliances and white goods, sensor signal conditioning with mTouch capacitive touch buttons or sliders, low-end human-machine interface panels, and educational/hobbyist projects using PIC kit development tools. The combination of integrated LCD driver and XLP ultra-low-power is what differentiates this family from general-purpose PIC16 parts.
When designing with this device, plan the in-circuit serial programming (ICSP) pins (typically ICSPCLK/ICSPDAT and MCLR/Vpp) so the part remains accessible on the PCB for firmware updates and debug. The integrated LCD charge pump can simplify designs by allowing low-voltage battery operation while still meeting Vlcd requirements for typical TN glass, but external resistor selection per the datasheet remains essential.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone datasheet, so you can quickly evaluate this part against alternatives and decide if it is the right fit for your embedded design.
Drop-in alternatives for PIC16F1934-I/PT β 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 PIC16F1934-I/PT (same form factor and footprint) β differing in Timers, Package, Program Memory (Flash), I/O Pins, ADC.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1936-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1937-I/PT
β Drop-Inβ In Stock
$1.45 / Unit
View Datasheet βPIC16F1938-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1939-I/PT
β Drop-Inβ In Stock
$3.42 / Unit
View Datasheet βPIC16LF1934-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18877-I/PT
β Drop-Inβ In Stock
$2.18 / Unit
View Datasheet βPIC16F19176-I/PT
β Drop-Inβ In Stock
$1.85 / Unit
View Datasheet βPIC16F1847-I/P
β Drop-Inβ In Stock
$1.65 / Unit
View Datasheet βPIC16F1934-I/PT Maximum Ratings & Electrical Characteristics
| Product Family | PIC16 XLP 8-bit Microcontroller |
| Core | PIC16 enhanced mid-range 8-bit RISC |
| CPU Speed | 32 MHz (8 MIPS) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| ADC | 10-bit, 12-channel |
| Timers | 4 x 8/16-bit (Timer0/1/2/6 or similar; refer to datasheet) |
| Communication Interfaces | 1 x USART, 1 x MSSP (I2C/SPI) |
| LCD Driver | Integrated, up to 36 segments (family-dependent) |
| Internal Oscillator | 16 MHz HF + 31 kHz LF, PLL to 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +85C (Industrial, 'I' grade) |
| Package | 44-pin TQFP (10x10 mm, PT) |
| I/O Pins | Up to 36 (44-pin package dependent) |
| Low-Power Technology | nanoWatt XLP (eXtreme Low Power) |
| Instruction Set | 49 instructions, enhanced mid-range |
| Programming | ICSP (In-Circuit Serial Programming) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F1934-I/PT Pin Configuration
| Pin 1 | RA0 β PORTA bit 0 / analog input / ICDDAT |
| Pin 2 | RA1 β PORTA bit 1 / analog input |
| Pin 3 | RA2 β PORTA bit 2 / analog input |
| Pin 4 | RA3 β PORTA bit 3 / analog input / MCLR |
| Pin 5 | RA4 β PORTA bit 4 / analog input |
| Pin 6 | RA5 β PORTA bit 5 / analog input |
| Pin 7 | RA6 β PORTA bit 6 / oscillator |
| Pin 8 | RA7 β PORTA bit 7 / oscillator |
| Pin 9 | VSS β Ground |
| Pin 10 | VDD β Positive supply |
| Pin 11 | RB0 β PORTB bit 0 |
| Pin 12 | RB1 β PORTB bit 1 |
| Pin 13 | RB2 β PORTB bit 2 |
| Pin 14 | RB3 β PORTB bit 3 |
| Pin 15 | RB4 β PORTB bit 4 |
| Pin 16 | RB5 β PORTB bit 5 |
| Pin 17 | RB6 β PORTB bit 6 / ICSPCLK |
| Pin 18 | RB7 β PORTB bit 7 / ICSPDAT |
| Pin 19 | VSS β Ground |
| Pin 20 | VDD β Positive supply |
| Pin 21 | RC0 β PORTC bit 0 |
| Pin 22 | RC1 β PORTC bit 1 |
| Pin 23 | RC2 β PORTC bit 2 |
| Pin 24 | RC3 β PORTC bit 3 |
| Pin 25 | RC4 β PORTC bit 4 |
| Pin 26 | RC5 β PORTC bit 5 |
| Pin 27 | RC6 β PORTC bit 6 |
| Pin 28 | RC7 β PORTC bit 7 |
| Pin 29 | VSS β Ground |
| Pin 30 | VDD β Positive supply |
| Pin 31 | RD0 β PORTD bit 0 |
| Pin 32 | RD1 β PORTD bit 1 |
| Pin 33 | RD2 β PORTD bit 2 |
| Pin 34 | RD3 β PORTD bit 3 |
| Pin 35 | RD4 β PORTD bit 4 |
| Pin 36 | RD5 β PORTD bit 5 |
| Pin 37 | RD6 β PORTD bit 6 |
| Pin 38 | RD7 β PORTD bit 7 |
| Pin 39 | VSS β Ground |
| Pin 40 | RE0 β PORTE bit 0 (LCD segment in some packages) |
| Pin 41 | RE1 β PORTE bit 1 (LCD segment in some packages) |
| Pin 42 | RE2 β PORTE bit 2 (LCD segment in some packages) |
| Pin 43 | RE3 β PORTE bit 3 (LCD segment in some packages) |
| Pin 44 | AVDD/VREF+ β Analog supply / voltage reference |
Typical Applications
PIC16F1934-I/PT is suitable for 6 applications: Battery-Powered Thermostat with LCD, Digital Weighing Scale with Segment LCD, Universal Remote Control with mTouch, Small Home Appliance HMI Controller, Industrial Sensor Transmitter, Educational / Hobbyist Development Board.
Battery-Powered Thermostat with LCD
The PIC16F1934-I/PT is well suited to wall-mount thermostats powered by 2xAA batteries because of its nanoWatt XLP ultra-low-power architecture (sleep currents in tens of nA) and integrated LCD driver that eliminates external display ICs. Its 12-channel 10-bit ADC reads NTC thermistors directly through ratiometric voltage dividers, while the integrated LCD charge pump maintains display contrast down to 2 V battery voltage. The 7 KB Flash comfortably fits HVAC state-machine firmware with weekly scheduling and EEPROM-stored setpoints. Engineers typically pair it with a TMP36 analog sensor and an SPI-driven ePaper or low-power LCD for multi-month battery life.
Recommended
Digital Weighing Scale with Segment LCD
The PIC16F1934-I/PT powers digital weighing scales where load-cell signal conditioning, 24-bit ADC interfacing via SPI, and a 4-digit 7-segment LCD readout are required. The MSSP peripheral drives both the SPI ADC and the LCD driver; USART enables Bluetooth module connectivity for app-based weight tracking. XLP deep-sleep modes drop the average current consumption to microampere levels when the scale is idle, extending battery life to over a year on 3xAA cells. The 32 MHz core provides ample MIPS for moving-average filtering and unit conversion in real time.
Recommended
Universal Remote Control with mTouch
The PIC16F1934-I/PT is well-matched to consumer IR remote controls because its mTouch capacitive sensing peripheral supports touch buttons without external mechanical switches, and its XLP sleep current enables coin-cell operation for years. The integrated LCD driver can show simple status icons on a low-power segment display, and USART or MSSP can drive an IR LED driver or external transceiver. The 256-byte EEPROM stores pairing codes and device profiles. Engineers value the deterministic PIC core for low-latency IR protocol generation.
Recommended
Small Home Appliance HMI Controller
The PIC16F1934-I/PT suits HMI controllers in rice cookers, microwave ovens, or air purifiers where a 32- to 96-segment LCD shows status and a rotary encoder or button matrix provides user input. The 7 KB Flash is sufficient for menu state machines, sensor acquisition (temperature, humidity), and relay/triac control via GPIO. With 36 GPIO available in the 44-pin TQFP package, designers can multiplex many buttons and LEDs without an I/O expander. Industrial temperature grade supports appliance ambient conditions.
Recommended
Industrial Sensor Transmitter
The PIC16F1934-I/PT fits industrial 4-20 mA loop-powered sensor transmitters where its 1.8-5.5 V supply range, 10-bit ADC, and nanoWatt XLP sleep modes are decisive. USART drives RS-485 transceivers for Modbus RTU, while the MSSP connects to I2C temperature or pressure sensors. Industrial temperature rating (-40C to +85C) covers most factory environments. The integrated LCD option provides local display of measured values without an external driver.
Recommended
Educational / Hobbyist Development Board
The PIC16F1934-I/PT is a frequent choice for educational and hobbyist development boards (such as PICkit 3/4 or Curiosity platforms) thanks to its rich peripheral set, ICSP programming interface, and broad compiler/library support in MPLAB X IDE with XC8. With 7 KB Flash, students can implement UART communication, ADC sampling, PWM motor control, and LCD interface projects in one chip. The 44-pin TQFP package on a 0.1-inch breakout board maps cleanly to breadboards. Microchip's free samples program lowers the entry barrier for classroom adoption.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1934-I/PT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1936-I/PT | PIC16F1937-I/PT | PIC16F1938-I/PT | PIC16F1939-I/PT | PIC16LF1934-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB (4K x 14) | 14 KB | 14 KB | 28 KB | 28 KB | 7 KB |
| SRAM | 256 bytes | 256 bytes | 512 bytes | 1024 bytes | 1024 bytes | 256 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max CPU Speed | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (lower Fosc at Vdd<2V) |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V (LF) |
| LCD Driver | Yes (integrated, family-dependent segment count) | Yes | Yes | Yes | Yes | Yes |
| ADC | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Key Differentiators
- Integrated LCD driver eliminates external display ICs (vs PIC16F1847-I/P (40-pin PDIP, no LCD driver))
- nanoWatt XLP ultra-low-power Sleep current (vs Older PIC16F877A (no XLP, ~1 uA Sleep))
- 32 MHz operation with 1.8 V minimum supply across full industrial temp range (vs PIC16F1934-E variants and other 8-bit MCUs constrained to 2.0 V+ at full speed)
Design Notes
Route ICSP pins (RB6/ICSPCLK and RB7/ICSPDAT) to a 6-pin header or test pads so firmware updates and debug remain accessible on the assembled PCB. MCLR/Vpp must have a 10 kohm pull-up to VDD; do not leave MCLR floating, as the device will not start reliably. Place 0.1 uF decoupling capacitors close to every VDD/VSS pair and a single bulk capacitor (e.g., 10 uF) on the main VDD rail.
Estimated: At 32 MHz active and 3.3 V supply, core current is roughly 2-3 mA per the PIC16F193X family datasheet; in Sleep mode with watchdog disabled, this drops to tens of nA. For battery-life calculations, assume duty-cycled current of 100 uA average for typical sensor sampling at 1 Hz with active-time of a few ms. Adding an LCD charge pump load increases Sleep current by a few uA; verify with your specific segment count.
Keep analog inputs (RA0-RA5, RE0-RE3) away from switching nodes and digital signal traces; route them with ground-referenced shielding for accurate 10-bit ADC readings. For the LCD driver, follow the datasheet bias network recommendation (typically 3 capacitors and 4 resistors) and ensure the COM/SEG traces are short and balanced. If using mTouch, dedicate a guarded copper pour around each button per Microchip's mTouch design guide to maximize touch sensitivity and water-tolerance.
Do not exceed the absolute maximum supply voltage of 5.5 V on the PIC16F1934 (3.6 V on the LF variant) or the part may suffer latch-up. Always check the Configuration Word settings for oscillator selection, watchdog timer, code protection, and low-voltage programming; getting these wrong is a frequent source of 'dead' parts. The internal PLL requires the PLL configuration bit set AND a specific oscillator configuration; verify both before debugging clock-related issues.
Compliance Information
RoHS and REACH compliance per Microchip product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified (automotive requires PIC16F1934T-I/PTVAO automotive-grade ordering code). Lead-free and halogen-free packaging standard.
