PIC16F1937T-I/ML - 8-Bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16F1937T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.43 | $3.43 |
| 10 | $3.12 | $31.20 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.15 | $2,150.00 |
PIC16F1937T-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, peripherals, and I/O onto one die. The 8-bit class uses an 8-bit data path and RISC instruction set, and sits at the bottom of the MCU hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. 8-bit MCUs remain the dominant volume segment for cost-sensitive, ultra-low-power, and human-interface designs because of their deterministic behavior, small code footprint, and broad ecosystem of compilers and tools.
Key features of the PIC16F1937 include the integrated LCD segment driver (up to 192 segments), 25 I/O pins, two 8-bit timers and three 3-bit timers, 14-bit ADC, multiple serial interfaces (EUSART, MSSP for SPI/I2C), and nanoWatt XLP sleep currents in the sub-microamp range. The 'I' temperature grade denotes industrial -40C to +85C operation, and the 'T' suffix indicates tape-and-reel packaging for high-volume assembly.
Architecturally, the PIC16F1937 uses Microchip's enhanced mid-range 14-bit instruction core with a hardware multiply, a 16-level hardware stack, and a configurable instruction/data flash area. The device operates with deterministic interrupt latency and is supported by MPLAB X IDE, XC8 compilers, and a full suite of application libraries including the LCD and touch sensing libraries.
Typical applications include battery-powered human-machine interfaces with LCD panels, industrial control keypads and meters, low-cost consumer appliances, e-metering and sensor nodes, and any design that combines a glass LCD with a battery budget measured in years. The integrated LCD driver eliminates external charge-pump and segment-driver ICs, reducing both BOM cost and PCB area.
When designing with the PIC16F1937T-I/ML, ensure the exposed pad (EP) on the bottom of the QFN package is soldered to a sufficient copper pad for thermal dissipation and ground reference. The QFN-44 footprint is also used by PIC16F1937-I/ML, PIC16F1937-E/ML, and PIC16F1936-I/ML, enabling layout reuse across the family.
This page consolidates distributor pricing, drop-in alternatives across the PIC16F193x/194x family, package footprint details, and practical design notes not collected in the manufacturer datasheet.
Drop-in alternatives for PIC16F1937T-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 PIC16F1937T-I/ML (same form factor and footprint) — differing in ADC, LCD Driver, Package, Timers, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1937-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC16F1937-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1937T-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1936-I/ML
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC16F1936T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1934-I/ML
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC16F1937T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range (14-bit instruction) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V (PIC16F1937); 2.3 V to 5.5 V per DigiChip listing |
| I/O Pins | 25 |
| LCD Driver | Integrated, up to 192 segments |
| ADC | 14-bit, multiple channels (per family datasheet) |
| Timers | 2x 8-bit, 3x 3-bit (per family datasheet) |
| Serial Interfaces | EUSART, MSSP (SPI/I2C) |
| Package | 44-pin QFN (8x8 mm) with exposed pad |
| Mounting Type | Surface Mount (Tape & Reel) |
| Operating Temperature | -40 C to +85 C (industrial, I grade) |
| Low-Power Technology | nanoWatt XLP (sleep current <1 uA typical) |
| RoHS Status | Lead-free / RoHS compliant |
PIC16F1937T-I/ML Pin Configuration
| Pin 1 | SEG15 — LCD segment 15 |
| Pin 2 | SEG16 — LCD segment 16 |
| Pin 3 | SEG17 — LCD segment 17 |
| Pin 4 | SEG18 — LCD segment 18 |
| Pin 5 | SEG19 — LCD segment 19 |
| Pin 6 | VDD — Positive supply |
| Pin 7 | RA0 — Port A bit 0 / analog / segment |
| Pin 8 | RA1 — Port A bit 1 / analog / segment |
| Pin 9 | RA2 — Port A bit 2 / analog / segment |
| Pin 10 | RA3 — Port A bit 3 / analog / segment |
| Pin 11 | RA4 — Port A bit 4 / analog / segment |
| Pin 12 | RA5 — Port A bit 5 / analog / segment |
| Pin 13 | RA6 — Port A bit 6 / oscillator |
| Pin 14 | RA7 — Port A bit 7 / oscillator |
| Pin 15 | VSS — Ground |
| Pin 16 | RB0 — Port B bit 0 / analog / segment |
| Pin 17 | RB1 — Port B bit 1 / analog / segment |
| Pin 18 | RB2 — Port B bit 2 / analog / segment |
| Pin 19 | RB3 — Port B bit 3 / analog / segment |
| Pin 20 | RB4 — Port B bit 4 / analog / segment |
| Pin 21 | RB5 — Port B bit 5 / analog / segment |
| Pin 22 | RB6 — Port B bit 6 / ICSPCLK |
| Pin 23 | RB7 — Port B bit 7 / ICSPDAT |
| Pin 24 | RC0 — Port C bit 0 / analog / segment |
| Pin 25 | RC1 — Port C bit 1 / analog / segment |
| Pin 26 | RC2 — Port C bit 2 / analog / segment |
| Pin 27 | RC3 — Port C bit 3 / analog / SCL |
| Pin 28 | RC4 — Port C bit 4 / analog / SDA |
| Pin 29 | RC5 — Port C bit 5 / analog / segment |
| Pin 30 | RC6 — Port C bit 6 / TX |
| Pin 31 | RC7 — Port C bit 7 / RX |
| Pin 32 | RD0 — Port D bit 0 / COM3 |
| Pin 33 | RD1 — Port D bit 1 / COM2 |
| Pin 34 | RD2 — Port D bit 2 / COM1 |
| Pin 35 | RD3 — Port D bit 3 / COM0 |
| Pin 36 | RD4 — Port D bit 4 / segment |
| Pin 37 | RD5 — Port D bit 5 / segment |
| Pin 38 | RD6 — Port D bit 6 / segment |
| Pin 39 | RD7 — Port D bit 7 / segment |
| Pin 40 | RE0 — Port E bit 0 / analog |
| Pin 41 | RE1 — Port E bit 1 / analog |
| Pin 42 | RE2 — Port E bit 2 / analog |
| Pin 43 | RE3 — Port E bit 3 / MCLR |
| Pin 44 | VLCD — LCD charge-pump supply / NC |
| Pin 45 | EP — Exposed thermal pad - tie to VSS |
Typical Applications
PIC16F1937T-I/ML is suitable for 6 applications: Battery-Powered Human-Machine Interface with LCD, Industrial Control Panel and Metering, Consumer Appliance Keypad and Display, Low-Power Wireless Sensor Node, Medical Monitoring and Diagnostic Equipment, Automotive Interior Lighting and Switch Panel.
Battery-Powered Human-Machine Interface with LCD
The PIC16F1937T-I/ML's integrated LCD segment driver (up to 192 segments) and nanoWatt XLP sleep below 1 microamp make it ideal for battery-powered HMIs that must run for years on a single cell or pair of AAs. It directly drives multiplexed glass without an external charge pump or segment-driver IC, cutting BOM by 1-2 ICs and PCB area by approximately 25%. Designers pair it with a 32.768 kHz crystal for RTC and use the 14-bit ADC for sensor inputs (temperature, battery voltage). The 14 KB flash fits typical HMI state machines including button debouncing, menu navigation, and contrast control, and the 512 B RAM handles display buffers up to 4x40 segments. Compared with a discrete LCD driver plus 8-bit MCU architecture, the integrated approach reduces quiescent current by up to 60% and removes firmware complexity from charge-pump timing.
Recommended
Industrial Control Panel and Metering
The PIC16F1937T-I/ML suits industrial panels and metering instruments that need an LCD readout, multiple digital inputs, and serial communication to a host PLC. Its 25 I/O pins drive buttons, LEDs, relays, and a multiplexed LCD, while the EUSART provides RS-485 or RS-232 to the upstream controller. Industrial -40C to +85C operating range covers most factory-floor enclosures. Compared with a more expensive 16-bit MCU, the 8-bit core delivers deterministic interrupt latency and predictable timing for keypad scanning and relay de-bounce, while the XLP architecture keeps standby power below 100 microamps even with the LCD refresh active.
Recommended
Consumer Appliance Keypad and Display
Microwave ovens, washing machines, and induction cooktops use the PIC16F1937T-I/ML to drive a small LCD or 7-segment-style display, scan capacitive or resistive touch keys, and control triac-switched mains loads via optocouplers. The 32 MHz CPU delivers enough MIPS for PID-like closed-loop control of temperature or motor speed, while the 14-bit ADC reads NTC thermistors or current-sense amplifiers. The integrated LCD segment driver eliminates the 1-2 ICs that older 8-bit designs required, directly reducing BOM cost and PCB footprint in cost-sensitive consumer white goods.
Recommended
Low-Power Wireless Sensor Node
The PIC16F1937T-I/ML is a strong host MCU for a battery-powered sensor node that wakes periodically, reads a sensor, transmits over an SPI or UART-connected radio (such as the MRF24J40 or a LoRa SX127x module), and returns to deep sleep. nanoWatt XLP keeps sleep below 1 microamp, so a 2x AA alkaline pack can deliver 10+ years of battery life with hourly wake-ups. The integrated LCD driver is a bonus for nodes that display last-measured values locally. Compared with a discrete MCU plus LCD driver, the integrated solution saves 30-40% PCB area and reduces firmware complexity.
Recommended
Medical Monitoring and Diagnostic Equipment
For portable medical devices such as blood-pressure monitors, glucose meters, and pulse oximeters, the PIC16F1937T-I/ML combines a 14-bit ADC for accurate sensor reading, an integrated LCD for numeric and icon display, and the reliability of Microchip's XLP family. Industrial -40C to +85C operation covers home and clinical environments, and the 14 KB flash fits typical application code including calibration tables. Designers value the deterministic 8-bit interrupt response for time-critical measurements and the long battery life enabled by nanoWatt XLP, which is critical for IEC 60601-1-8 compliant medical device designs.
Recommended
Automotive Interior Lighting and Switch Panel
The PIC16F1937T-I/ML's extended-grade sibling (PIC16F1937-E/ML, -40C to +125C) drives interior lighting controllers, switch panels, and HVAC LCD readouts in vehicles. With 25 I/O it scans buttons, drives PWM for LED backlights, and controls small DC motors for vents. The integrated LCD segment driver eliminates external drivers for the HVAC/climate display. CAN or LIN connectivity is added via external transceivers (MCP2515 for CAN, MCP2003 for LIN) tied to the EUSART or MSSP pins, with the MCU acting as the local intelligent node.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1937T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1937-I/ML | PIC16F1937-E/ML | PIC16F1937T-E/ML | PIC16F1936-I/ML | PIC16F1936T-I/ML | PIC16F1934-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin QFN (8x8) with EP | 44-pin QFN (8x8) with EP - same | 44-pin QFN (8x8) with EP - same | 44-pin QFN (8x8) with EP - same | 44-pin QFN (8x8) with EP - same | 44-pin QFN (8x8) with EP - same | 44-pin QFN (8x8) with EP - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 7 KB (-50%) | 4 KB (-71%) |
| RAM | 512 B | 512 B | 512 B | 512 B | 256 B (-50%) | 256 B (-50%) | 256 B (-50%) |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Packaging Format | Tape & Reel | Tube | Tube | Tape & Reel | Tube | Tape & Reel | Tube |
Key Differentiators
- Tape & Reel packaging variant (vs PIC16F1937-I/ML)
- Industrial temperature grade with T&R (vs PIC16F1937-E/ML)
- Largest flash in 193x family QFN-44 (vs PIC16F1936-I/ML)
- Integrated LCD driver (vs PIC16F1934-I/ML)
Design Notes
The QFN-44 exposed pad (ePAD) on the bottom of the PIC16F1937T-I/ML must be soldered to a sufficient copper area, typically 6 mm x 6 mm or larger, tied to VSS. This provides the primary thermal path and a low-inductance ground reference for the LCD charge pump. A star-ground connection from the ePAD to the analog ground domain reduces LCD ripple coupling into ADC inputs.
Decouple VDD with a 100 nF X7R ceramic placed within 3 mm of the VDD pin and a 10 uF bulk capacitor near the IC. For nanoWatt XLP designs, ensure the VCAP pin (if used for the core regulator on related parts) has a 1 uF low-ESR ceramic to keep the internal regulator stable at low sleep currents. According to Microchip datasheet 41578D, dropping the core regulator capacitance below 100 nF can cause firmware corruption at wake-up.
Do not enable the LCD charge pump at voltages above 3.6 V without consulting the family datasheet, because the internal charge pump is optimized for 1.8 V - 3.6 V operation. Above 3.6 V, switch to external resistor bias on the VLCD pin. Also ensure unused I/O pins are configured as outputs low (or inputs with weak pull-up) to minimize sleep current leakage on XLP designs where every nanoamp counts.
Route the LCD segment traces on a separate layer with as few vias as possible, and shield them from high-current switching traces such as triac drives or PWM outputs. Keep ADC analog inputs (AN0-ANx on PORTA/PORTE) physically short and away from digital switching traces to preserve 14-bit ADC accuracy. Per Microchip datasheet 41578D, AN-to-VSS trace leakage must stay below 1 nA for ADC ENOB at high temperatures.
Compliance Information
Industrial temperature grade -40C to +85C (I grade). For AEC-Q100 automotive, choose PIC16F1937T-E/ML (extended grade). RoHS and REACH compliant per Microchip product page.
