PIC16LF1574-I/P - 8-bit MCU, 7KB Flash, 32MHz, 14-PDIP | Microchip
MPN: PIC16LF1574-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.32 | $13.20 |
| 100 | $1.15 | $115.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.91 | $910.00 |
PIC16LF1574-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals such as timers, communication blocks, and analog front-ends. Within the broader taxonomy, the PIC16LF1574 is classified as: microcontroller -> 8-bit MCU -> PIC16 family -> Flash-based Harvard RISC -> embedded computing IC. It executes instructions using Microchip's enhanced mid-range Harvard architecture with a 14-bit instruction word, supporting most instructions in a single clock cycle at 32 MHz (8 MHz instruction cycle). The "LF" suffix denotes the wide-voltage, low-power process variant supporting 1.8 V to 3.6 V operation.
Key features include a 32 MHz internal oscillator with PLL option, two rail-to-rail comparators with programmable reference, a 5-bit DAC, a 10-bit ADC on select channels, 4 Kbytes of Flash with self-programmability, seven hardware timers, PWM/SCCP modules, and configurable logic cells. The 14-pin PDIP footprint provides breadboard-friendly access for prototyping and educational use, while internal peripherals remain identical to surface-mount variants in the family.
Typical applications include LED lighting and signage controllers, sensor conditioning front-ends, low-end motor or fan control loops, battery-powered consumer devices, and educational/hobbyist platforms. The combination of a 5-bit DAC and two comparators enables simple closed-loop analog control without external analog ICs.
When designing with this device, budget the I/O count carefully: 14 pins must supply VDD, VSS, ICSP programming, reset, and user I/O. The "LF" process supports 1.8 V minimum VDD, making the part suitable for coin-cell or Li-ion powered products. Verify the latest errata on the Microchip product page before locking firmware.
Drop-in alternatives for PIC16LF1574-I/P — 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 PIC16LF1574-I/P (same form factor and footprint) — differing in Package, Program Memory (Flash), Mounting Type, RoHS Status, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1574-I/JQ
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →PIC16LF1574-E/P
✅ Drop-In✓ In Stock
$1.24 / Unit
View Datasheet →PIC16LF1574-E/JQ
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC16F1574-I/P
✅ Drop-In✓ In Stock
$0.91 / Unit
View Datasheet →PIC16LF1554E
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1574-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Word | 14-bit |
| Max CPU Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data Memory (SRAM) | 512 bytes |
| Data EEPROM | 128 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V ("LF" wide-voltage) |
| I/O Pins | 11 (on 14-pin package) |
| Comparators | 2 (rail-to-rail, programmable reference) |
| DAC | 5-bit |
| Timers | 7 hardware timers |
| Internal Oscillator | Yes, with PLL (up to 32 MHz) |
| Package | 14-pin PDIP (through-hole, 0.300 inch) |
| Operating Temperature (I-grade) | -40C to +85C (industrial) |
| Mounting Type | Through-Hole (THT) |
| RoHS Status | Compliant (Pb-free) |
PIC16LF1574-I/P Pin Configuration
| Pin 1 | RA3/AN3/MCLR/VPP — Digital I/O / analog input / Master Clear reset (active-low) / ICSP VPP |
| Pin 2 | RA0/AN0 — Digital I/O / analog input 0 |
| Pin 3 | RA1/AN1 — Digital I/O / analog input 1 |
| Pin 4 | RA2/AN2 — Digital I/O / analog input 2 |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA4 — Digital I/O only (no analog) |
| Pin 7 | RA5 — Digital I/O only |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1/CLKI — Digital I/O / crystal oscillator in / external clock in |
| Pin 10 | RA6/OSC2/CLKO — Digital I/O / crystal oscillator out / clock out |
| Pin 11 | RC4 — Digital I/O |
| Pin 12 | RC5 — Digital I/O |
| Pin 13 | RC6 — Digital I/O |
| Pin 14 | VDD — Positive supply voltage (1.8 V to 3.6 V for LF variant) |
Typical Applications
PIC16LF1574-I/P is suitable for 6 applications: Battery-Powered Sensor Node, LED Lighting Driver, Consumer Remote Control, Low-Cost Motor/Fan Control, Educational / Hobbyist Platform, Industrial Sensor Conditioning Front-End.
Battery-Powered Sensor Node
The PIC16LF1574-I/P 1.8V-3.6V LF process and 14-pin PDIP form factor suit low-power sensor nodes. nA-range Sleep current plus on-chip 5-bit DAC enables duty-cycled sampling. Critical-path consideration is pin budgeting at 1.8V battery supply.
Recommended
LED Lighting Driver
The PIC16LF1574-I/P drives LED strings from 2x AA or Li-ion via PWM/SCCP modules with on-chip comparators for current-sense feedback. Critical-path consideration is PWM frequency tuning to limit switching noise on the analog comparator rails.
Recommended
Consumer Remote Control
The PIC16LF1574-I/P fits IR remote-control handset designs that need low Sleep current, 7 KB firmware space for IR protocols, and breadboard-friendly 14-pin PDIP for prototyping. Critical-path consideration is interrupt-driven IR receiver wake from Sleep to extend battery life.
Recommended
Low-Cost Motor/Fan Control
The PIC16LF1574-I/P's two comparators and 5-bit DAC provide a closed-loop speed control law without external analog ICs. The 14-pin PDIP enables thru-hole assembly on small appliances. Critical-path consideration is back-EMF snubbing across the FET switching node.
Recommended
Educational / Hobbyist Platform
The PIC16LF1574-I/P 14-pin PDIP is breadboard-friendly and is supported by MPLAB X IDE, XC8 compiler, and free tutorial libraries - making it ideal for introductory PIC courses. Critical-path consideration is ICSP header access - designers must share 5x I/O pins and a populated RA3/MCLR pin.
Recommended
Industrial Sensor Conditioning Front-End
The PIC16LF1574-I/P integrates two rail-to-rail comparators and a 5-bit DAC, replacing standalone analog conditioning chips in low-channel-count transducer front-ends. Industrial grade -40C to +85C supports factory floor deployment. Critical-path consideration is ferrite-bead + 0.1uF decoupling at each VDD pin.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1574-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1574-I/JQ | PIC16LF1574-E/P | PIC16LF1574-E/JQ | PIC16F1574-I/P | PIC16LF1554-E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-14 (THT) | UQFN-14 (SMD) | PDIP-14 (THT) | UQFN-14 (SMD) | PDIP-14 (THT) | PDIP-14 (THT) |
| Flash Program Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 7 KB | 7 KB | 4 KB |
| SRAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 256 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V (non-LF) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial "I") | -40C to +85C | -40C to +125C (extended "E") | -40C to +125C | -40C to +85C | -40C to +125C |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Internal 5-bit DAC | Yes | Yes | Yes | Yes | Yes | No (not present in 155x sub-family) |
Key Differentiators
- Wide-voltage 1.8V-3.6V LF process vs 2.3V-5.5V on the non-LF PIC16F1574 (vs PIC16F1574-I/P)
- 5-bit DAC and dual rail-to-rail comparators integrated on-chip (vs PIC16LF1554-E/P)
- 128 bytes of EEPROM data memory for non-volatile parameter storage (vs PIC16LF1554-E/P)
Design Notes
The "LF" process variant supports 1.8 V to 3.6 V. Below 2.0 V the brown-out reset (BOR) and ADC accuracy degrade, so add a 0.1 uF + 10 uF bulk capacitor pair on VDD. For Sleep current-critical designs, ensure all unused I/O pins are configured as outputs low (not inputs floating) to eliminate parasitic current paths. The LF variants enter Sleep with nA-range current and wake on interrupt or watchdog.
For 14-pin PDIP (300 mil DIP), place one 0.1 uF decoupling capacitor within 5 mm of VDD pin 14. Add a 10 uF tantalum or ceramic bulk capacitor at the board's power entry. Pin 1 (RA3/MCLR) is shared between ICSP VPP, Master Clear reset, and digital I/O; do NOT pull MCLR low for normal operation - it forces reset state. If unused as I/O, leave MCLR tied through a 10 kOhm pullup to VDD to enable in-circuit programming.
RA4 on PIC16 mid-range is an open-drain output only (no analog input capability) - do not assign ADC or comparator functions to RA4. The 32 MHz CPU clock requires the internal PLL; if you select LFINTOSC or HFINTOSC without PLL, the CPU is limited to 16 MHz and most peripherals also downclock. Configure the OSCCON and PLL enable bits in CONFIG1 before any peripheral initialization. Verify MCLR / PIN num on the ICSP header to avoid lockouts in production.
Compliance Information
RoHS-compliant Pb-free PDIP per Microchip product page. Not AEC-Q100 qualified - choose an AEC-Q100-grade MCU from the PIC16F18x4 family for automotive. REACH and conflict-minerals declarations available on Microchip Direct.
