PIC16F527-I/ML - 8-Bit 20MHz 1.5KB Flash MCU | Microchip
Référence : PIC16F527-I/ML ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.78 | $1,78 |
| 10 | $1.59 | $15,90 |
| 100 | $1.34 | $134,00 |
| 500 | $1.18 | $590,00 |
| 1 000 | $1.05 | $1 050,00 |
PIC16F527-I/ML Présentation
A PIC microcontroller (Peripheral Interface Controller) is a Harvard-architecture, RISC-based 8-bit MCU developed by Microchip that separates program and data memory buses for deterministic instruction timing. Within the Microchip portfolio, the PIC16F5XX baseline family is positioned for cost-sensitive, space-constrained designs, combining the CPU core with Flash memory, RAM, and configurable analog peripherals (ADC, op-amps, comparators) on a single die; this integration pathway is commonly called mixed-signal MCU and contrasts with digital-only MCUs that require external analog front-ends. The PIC16F527 specifically emphasizes analog integration while keeping the 8-bit PIC16 instruction set, eliminating external op-amps and comparators in many sensor-interface designs.
Key features include a 20 MHz internal oscillator option (factory calibrated), an 8-bit A/D converter with multiple input channels, two rail-to-rail op-amps suitable for low-side or high-side signal conditioning, two comparators with a programmable voltage reference, and Flash program memory that supports in-circuit serial programming (ICSP) for field updates. The 20-QFN (ML) 4x4 mm package with exposed thermal pad maximizes PCB area efficiency while sustaining industrial temperature operation from -40C to +85C.
Architecturally, the PIC16F527 uses a 14-bit instruction word with a single accumulator (W register) and a file-register-based data memory scheme, allowing predictable interrupt response and tight loop control suitable for closed-loop analog regulation. The integrated analog peripherals share internal reference and bias networks, reducing calibration overhead compared to discrete analog designs.
Typical applications include battery chargers, LED lighting controllers, sensor signal conditioning (thermistor, photodiode, bridge interfaces), low-cost switch-mode power supply feedback loops, fan speed controllers, and small appliance control. By performing both sensing and closed-loop control in a single chip, the PIC16F527 reduces total system cost and PCB area.
When designing with the PIC16F527-I/ML, the QFN-20 package requires thermal vias under the exposed pad and decoupling capacitors placed within 3 mm of the VDD pins to maintain operation across the -40C to +85C industrial range.
This page synthesizes current distributor pricing for the PIC16F527-I/ML, drop-in same-package alternatives, and practical design notes compiled from the Microchip datasheet that extend beyond the manufacturer application notes.
Alternatives de remplacement direct pour PIC16F527-I/ML — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16F527-I/ML (même facteur de forme et même empreinte) — différant par ADC, Package, Operating Temperature, Core Architecture, I/O Pins.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F527T-I/ML
✅ Remplacement direct✓ En stock
$0.78 / unité
Voir la fiche technique →PIC16F527-I/MLVAO
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC16F527-E/ML
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$0.69 / unité
Voir la fiche technique →PIC16F527-I/ML Valeurs maximales et caractéristiques électriques
| Core Architecture | 8-bit PIC16 RISC, Harvard |
| Program Memory | 1.5 KB Flash (1K x 14 words) |
| RAM | 128 bytes |
| Maximum CPU Speed | 20 MHz (4 MIPS instruction rate) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Température de fonctionnement | -40C to +85C (Industrial) |
| ADC | 8-bit resolution, multi-channel |
| Operational Amplifiers | 2 (rail-to-rail I/O) |
| Comparators | 2 (with programmable reference) |
| Boîtier | 20-pin QFN (ML), 4x4 mm with exposed pad |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| Internal Oscillator | Yes, 20 MHz factory-calibrated option |
Configuration des broches de PIC16F527-I/ML
| Broche 1 | RA0/AN0 — GPIO/ADC input |
| Broche 2 | RA1/AN1 — GPIO/ADC input |
| Broche 3 | RA2/AN2 — GPIO/ADC input |
| Broche 4 | RA3/AN3 — GPIO/ADC input |
| Broche 5 | RA4/AN4 — GPIO/ADC input |
| Broche 6 | RA5/AN5 — GPIO/ADC input |
| Broche 7 | VDD — Positive supply |
| Broche 8 | VSS — Ground |
| Broche 9 | RB0 — GPIO |
| Broche 10 | RB1 — GPIO |
| Broche 11 | RB2 — GPIO |
| Broche 12 | RB3 — GPIO |
| Broche 13 | RB4 — GPIO |
| Broche 14 | RB5 — GPIO |
| Broche 15 | RB6/ICSPCLK — GPIO/ICSP clock |
| Broche 16 | RB7/ICSPDAT — GPIO/ICSP data |
| Broche 17 | OPA1IN+ — Op-amp 1 non-inverting input |
| Broche 18 | OPA1OUT — Op-amp 1 output |
| Broche 19 | OPA2IN+/CVREF — Op-amp 2 input / comparator reference |
| Broche 20 | OPA2OUT — Op-amp 2 output |
Applications typiques
PIC16F527-I/ML convient pour 6 applications: Battery Charger Controller, LED Lighting Controllers, Sensor Signal Conditioning, Low-Cost Switch-Mode Power Supply Feedback, Fan Speed Controller, Small Appliance Control.
Battery Charger Controller
The PIC16F527-I/ML fits battery charger designs by integrating the entire analog front-end needed for closed-loop charge control, eliminating external components and reducing BOM cost. The two rail-to-rail op-amps condition shunt-current-sense and pack-voltage signals with high input impedance, while the two comparators with programmable voltage reference implement CC/CV transition thresholds without an external TL431 or supervisor. The 8-bit ADC samples pack voltage, charge current, and temperature (via NTC) at rates sufficient for lead-acid and Li-ion charge profiles. At 20 MHz CPU speed the PIC executes a PID charge loop with deterministic 200 ns instruction cycles, predictable interrupt response, and stable timing across the 2.0-5.5V VDD range that covers single-cell to multi-cell packs.
Recommandé
LED Lighting Controllers
The PIC16F527-I/ML is well-suited to constant-current LED drivers because its ADC, dual op-amps, and comparators form a complete analog regulation loop in a single die. Designers route the high-side shunt voltage into an op-amp, scale it with the second op-amp, then compare against the programmable voltage reference to set the LED current setpoint. The 20 MHz core generates PWM dimming at resolutions up to 10-bit, sufficient for visible-light color-mixing applications. Industrial -40C to +85C operation supports outdoor luminaires, signage, and architectural lighting; the 20-QFN 4x4 mm footprint fits inside MR16/MR11 form factors where board area is constrained.
Recommandé
Sensor Signal Conditioning
For thermistor, photodiode, strain-gauge, and bridge-sensor interfaces, the PIC16F527-I/ML brings low-side bridge amplification, level shifting, and ADC digitization together. The first op-amp can be configured as an instrumentation front-end while the second op-amp supplies an active low-pass filter before the 8-bit ADC samples the conditioned signal. The on-board comparators with programmable reference enable threshold-detect alarms without waking the CPU. With 128 bytes of RAM and 1.5 KB Flash, the firmware executes linearization algorithms for NTC/PTC curves and ratiometric compensation. The wide 2.0-5.5V VDD range supports both 3.3V and 5V sensor systems.
Recommandé
Low-Cost Switch-Mode Power Supply Feedback
The PIC16F527-I/ML implements primary- or secondary-side regulation for low-power SMPS topologies by monitoring output voltage, current, and auxiliary winding. The integrated op-amps buffer the current-sense amplifier and TL431-style error amplifier replacement, while the ADC computes average output voltage and ripple amplitude. The dual comparators with programmable reference derive peak-current-mode and overcurrent-protection thresholds. At 20 MIPS the PIC executes valley-mode or fixed-frequency control loops in firmware, eliminating dozens of discrete components and reducing cost in adapters and auxiliary supplies up to 50W.
Recommandé
Fan Speed Controller
Brushless DC and PWM-controlled DC-brushed fans can use the PIC16F527-I/ML as a single-chip controller by leveraging its op-amps for back-EMF sensing and its comparators for zero-crossing detection of the commutation signal. The 8-bit ADC monitors tachometer feedback and adjusts PWM duty cycle in closed loop to maintain target RPM, while the CPU computes PI or PID coefficients for soft-start and acoustic-noise reduction. Wide supply range 2.0-5.5V covers both 5V USB fans and 12V CPU-cooling fans when used with a simple LDO. Industrial temperature grade and the small 20-QFN footprint suit space-constrained heatsink-mounted fan designs.
Recommandé
Small Appliance Control
Small household appliances such as coffee makers, kettles, irons, blenders, and countertop ovens can integrate the PIC16F527-I/ML for temperature, weight, and timing control. The dual op-amps amplify thermocouple or thermistor signals; the comparators monitor over-temperature safety thresholds; the ADC reads user inputs from rotary encoders or button matrices. The PIC controls TRIAC firing angles, relay actuation, buzzer patterns, and seven-segment displays through its GPIO, with the Flash-reprogrammable memory supporting regional SKUs and feature variations without hardware changes.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16F527-I/ML — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16F527T-I/ML | PIC16F527-I/MLVAO | PIC16F527-E/ML |
|---|---|---|---|---|
| Package | 20-QFN (ML) 4x4 mm | 20-QFN (ML) 4x4 mm - same | 20-QFN (ML) 4x4 mm - same | 20-QFN (ML) 4x4 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC16 | 8-bit PIC16 | 8-bit PIC16 | 8-bit PIC16 |
| Max CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Memory | 1.5 KB | 1.5 KB | 1.5 KB | 1.5 KB |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Automotive VAO grade | Extended -40C to +125C |
| Packaging Form | Tube | Tape & Reel | Tube | Tube |
| Integrated Analog | ADC + 2 Op-Amps + 2 Comparators | ADC + 2 Op-Amps + 2 Comparators | ADC + 2 Op-Amps + 2 Comparators | ADC + 2 Op-Amps + 2 Comparators |
Principaux différenciateurs
- Only 20-pin QFN PIC16F5XX with full dual op-amp + dual comparator + ADC integration (vs PIC16F1829T-I/SO)
- Smallest footprint integrated analog MCU in PIC16 family (vs PIC16F570)
- Extended temperature option available in same package (vs PIC16F527-E/ML)
Notes de conception
The 20-pin QFN (ML) package exposes the central thermal pad, which must be soldered to a PCB thermal land of at least 1 square cm. Estimated: with the recommended 4x4 via array under the exposed pad, the theta_JA is approximately 35 C/W on a 2-layer FR-4 board; without a thermal land this can exceed 80 C/W. For industrial -40C to +85C operation in enclosed appliance housings, verify junction temperature by estimating the average quiescent current (~1 mA active, ~100 nA sleep) times VDD plus I/O switching losses, then add 35 C/W times ambient delta to confirm Tj < 125C.
Decoupling capacitors must be placed within 3 mm of the VDD pin (pin 7) and the VSS pin (pin 8). Use a 100 nF X7R ceramic in parallel with a 4.7 uF or 10 uF bulk ceramic on VDD. The ICSP programming pins (RB6/ICSPCLK and RB7/ICSPDAT) should have a 4.7 kohm pull-up to VDD if in-circuit programming is required, and these pins should not be loaded with heavy capacitance so the programmer can drive them reliably.
Do not leave op-amp inputs floating when the op-amps are enabled; tie each unused non-inverting input to a known reference (VDD/2 typically) through a 100 kohm resistor to prevent input leakage that biases the rail unexpectedly. The internal voltage reference for the comparators must be enabled in firmware before use; otherwise the comparator negative inputs will not have a valid threshold. Watch out for the ICSP pins RB6/RB7 being repurposed as GPIO - if firmware configures them as outputs, ICSP cannot reprogram the part without a high-voltage reset sequence.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - automotive designs requiring qualification should request the VAO suffix variant. Lead-free reflow up to 245C peak supported.
