PIC18F27K40-E/SS - 8-bit MCU, 128KB Flash, 64MHz, 28-SSOP | Microchip
Référence : PIC18F27K40-E/SS ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.5 | $2,50 |
| 10 | $2.25 | $22,50 |
| 100 | $2 | $200,00 |
| 500 | $1.8 | $900,00 |
| 1 000 | $1.65 | $1 650,00 |
PIC18F27K40-E/SS Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program storage (Flash/ROM), volatile working memory (RAM), and a mix of peripherals such as ADC, timers, communication, and PWM. Within the system taxonomy it belongs to embedded controllers -> microcontrollers -> 8-bit MCUs -> semiconductor ICs. PIC18 series devices use an enhanced Harvard RISC architecture, separating program and data buses for deterministic instruction throughput.
Key features include 49 instruction set, 16-bit instructions, hardware multiplier, XLP (eXtreme Low Power) technology, and direct LED drive capability on I/O pins. Core Independent Peripherals (CIPs) such as the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and CRC/Scan can operate without CPU intervention, offloading timing-critical tasks and lowering active-core power.
Technical depth: the part integrates 24 channels of 10-bit ADC, a 5-bit DAC, multiple Capture/Compare/PWM (CCP) modules, Enhanced USART, MSSP (SPI/I2C), and hardware touch/hardware treatment peripherals. The 64 MHz internal oscillator and 16-bit instruction width deliver up to 16 MIPS computational throughput. XLP technology yields typical sleep currents below 50 nA, suiting long-life battery applications.
Typical applications include low-power IoT sensor nodes, LED lighting controllers, home appliance user interfaces, industrial sensor signal conditioning, and battery-powered handheld instruments. The combination of 128KB Flash and rich CIP integration reduces external component count and firmware complexity.
Design consideration: when migrating code from a PIC18F25K22 or PIC18F27K42, validate interrupt mapping and peripheral pin-select (PPS) assignments, as the K40 family uses enhanced PPS that may differ from older PIC18 baselines. Operate within 3.0V-5.5V VDD; programming voltage is internally managed.
This page synthesizes distributor pricing, drop-in alternatives, comparison matrix, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour PIC18F27K40-E/SS — 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 PIC18F27K40-E/SS (même facteur de forme et même empreinte) — différant par Package, ADC, Operating Temperature, Program Memory (Flash), Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F27K40-I/SS
✅ Remplacement direct✓ En stock
$1.99 / unité
Voir la fiche technique →PIC18F27K40-E/SP
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F27K42-E/SS
✅ Remplacement direct✓ En stock
$1.58 / unité
Voir la fiche technique →PIC18F25Q43-I/STX
✅ Remplacement direct✓ En stock
$1.55 / unité
Voir la fiche technique →PIC18F24K22-I/SSVAO
✅ Remplacement direct✓ En stock
$2.18 / unité
Voir la fiche technique →ATTINY1626-XU
✅ Remplacement direct✓ En stock
$1.2 / unité
Voir la fiche technique →PIC18F27K40-E/SS Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18 RISC (8-bit) |
| Program Memory (Flash) | 128 KB (64K x 16) |
| RAM | 4 KB |
| EEPROM | 256 B |
| Maximum CPU Frequency | 64 MHz |
| Operating Voltage (VDD) | 3.0 V to 5.5 V |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit |
| Comparators | Yes |
| PWM / CCP Modules | PWM, CCP, CWG |
| Core Independent Peripherals | CWG, WWDT, CRC/Scan, HLT |
| Communication | EUSART, MSSP (SPI / I2C) |
| XLP (Low Power) Technology | Yes |
| Température de fonctionnement | -40C to +125C (Extended, -E suffix) |
| Boîtier | 28-pin SSOP (5.30 mm body) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de PIC18F27K40-E/SS
| Broche 1 | RA0 — Port A bit 0 / AN0 / IOC |
| Broche 2 | RA1 — Port A bit 1 / AN1 / IOC |
| Broche 3 | RA2 — Port A bit 2 / AN2 / DAC / IOC |
| Broche 4 | RA3 — Port A bit 3 / AN3 / IOC |
| Broche 5 | RA4 — Port A bit 4 / IOC |
| Broche 6 | RA5 — Port A bit 5 / AN4 / IOC |
| Broche 7 | RA6 — Port A bit 6 / OSC2 / IOC |
| Broche 8 | VSS — Ground reference |
| Broche 9 | RA7 — Port A bit 7 / OSC1 / IOC |
| Broche 10 | RB0 — Port B bit 0 / ZCD / IOC |
| Broche 11 | RB1 — Port B bit 1 / ZCD / IOC |
| Broche 12 | RB2 — Port B bit 2 / AN8 / IOC |
| Broche 13 | RB3 — Port B bit 3 / AN9 / IOC |
| Broche 14 | RB4 — Port B bit 4 / AN10 / IOC |
| Broche 15 | RB5 — Port B bit 5 / AN11 / IOC |
| Broche 16 | RB6 — Port B bit 6 / ICDCLK / IOC |
| Broche 17 | RB7 — Port B bit 7 / ICDDAT / IOC |
| Broche 18 | VDD — Positive supply (3.3V or 5V) |
| Broche 19 | VSS — Ground reference |
| Broche 20 | RC0 — Port C bit 0 / AN12 / IOC |
| Broche 21 | RC1 — Port C bit 1 / AN13 / IOC |
| Broche 22 | RC2 — Port C bit 2 / AN14 / IOC |
| Broche 23 | RC3 — Port C bit 3 / AN15 / IOC |
| Broche 24 | RC4 — Port C bit 4 / AN16 / IOC |
| Broche 25 | RC5 — Port C bit 5 / AN17 / IOC |
| Broche 26 | RC6 — Port C bit 6 / AN18 / IOC |
| Broche 27 | RC7 — Port C bit 7 / AN19 / IOC |
| Broche 28 | RE3 — Port E bit 3 / AN5 / IOC |
Applications typiques
PIC18F27K40-E/SS convient pour 6 applications: Low-Power IoT Sensor Node, LED Lighting Controller, Home Appliance User Interface, Industrial Sensor Signal Conditioning, Battery-Powered Handheld Instrument, Automotive Body Control Module.
Low-Power IoT Sensor Node
The PIC18F27K40-E/SS suits battery-powered IoT sensor nodes thanks to XLP technology with sub-50 nA sleep current and 128 KB Flash for protocol stacks. The 10-bit ADC with up to 24 channels can directly interface analog sensors (temperature, humidity, pressure), while the integrated I2C/SPI MSSP connects digital sensors. Sleep-mode duty cycling with WWDT wake-up enables multi-year battery life. The 64 MHz core handles encrypted MQTT/HTTP transmission bursts.
Recommandé
LED Lighting Controller
The PIC18F27K40-E/SS can drive LED arrays directly using its high-current I/O pins (up to 50 mA per pin) and integrated Complementary Waveform Generator (CWG). The 5-bit DAC and PWM/CCP modules generate precise color-mixing waveforms for RGB or tunable-white lighting. CRC/Scan can monitor LED open/short faults without CPU intervention, reducing firmware complexity. Wide 3.0V to 5.5V VDD simplifies direct 5V LED rail operation.
Recommandé
Home Appliance User Interface
The PIC18F27K40-E/SS powers appliance control boards by integrating touch/proximity sensing via Hardware Limit Timer (HLT), PWM for motor control, and EUSART for appliance-network communication. The 128 KB Flash supports multi-language UI and safety state machines. The Extended temperature grade (-40C to +125C) handles oven or dryer thermal environments. Core Independent Peripherals offload button debouncing and LED matrix scanning.
Recommandé
Industrial Sensor Signal Conditioning
The PIC18F27K40-E/SS conditions 4-20 mA or 0-10 V industrial sensor signals via its 10-bit ADC with up to 24 channels and integrated comparators for threshold detection. The 5-bit DAC can output a calibration reference voltage. The EUSART interfaces RS-485 transceivers for industrial bus communication, while XLP modes allow 10+ year battery life on remote wireless transmitters. Extended temp grade supports factory-floor environments.
Recommandé
Battery-Powered Handheld Instrument
The PIC18F27K40-E/SS fits portable DMMs, environmental meters, and medical handheld devices thanks to XLP low-power modes and 128 KB Flash for display drivers, calibration tables, and data logging. The 5-bit DAC and comparators can drive a piezo buzzer or audio feedback. The MSSP interfaces OLED displays over SPI. Wide VDD range supports 2xAA/4xAA NiMH packs with direct 3.3V or 5V operation.
Recommandé
Automotive Body Control Module
The PIC18F27K40-E/SS Extended temperature grade (-40C to +125C) makes it usable in cabin body controllers for window lift, mirror adjust, and interior lighting. The CWG drives H-bridge MOSFETs for small motor loads, while PWM modules control LED dimming. CAN/LIN connectivity is achievable via the EUSART and an external transceiver. The 128 KB Flash holds CAN/LIN stacks and diagnostic firmware. Note: K40 is not AEC-Q100 qualified; for full automotive safety use PIC18F27K40-E/SSVAO variants.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F27K40-E/SS — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F27K40-I/SS | PIC18F27K42-E/SS | PIC18F25Q43-I/STX |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash | 128 KB | 128 KB | 128 KB | 32 KB |
| RAM | 4 KB | 4 KB | 4 KB | 2 KB |
| Max Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 3.0V - 5.5V | 3.0V - 5.5V | 3.0V - 5.5V | 3.0V - 5.5V |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) |
| Core Independent Peripherals | CWG, WWDT, CRC/Scan, HLT | CWG, WWDT, CRC/Scan, HLT | Enhanced CIP set (more CWG, ZCD) | Q43 family CIP enhancements |
Principaux différenciateurs
- Largest flash in 28-pin PIC18 K40 family (vs PIC18F25Q43-I/STX)
- Extended temperature range vs Pico cell (vs PIC18F27K40-I/SS)
- Integrated Core Independent Peripherals (vs PIC18F24K25K22-I/SSVAO)
Notes de conception
Estimated: at 64 MHz with all peripherals active, the PIC18F27K40-E/SS consumes approximately 10-15 mA from a 5.0V supply. Use XLP sleep modes with WWDT wake-up for battery applications; sleep current drops below 50 nA per Microchip datasheet 40001844E. Decouple VDD (pin 20) with 100 nF ceramic + 10 uF bulk capacitor placed within 5 mm of the pin to suppress switching transients during CWG operations.
Route the ICSP pins RB6 (ICDCK) and RB7 (ICDDAT) directly to a 6-pin header without series resistors for in-circuit debugging. Keep the high-current I/O traces (RA0-RA4 capable of 50 mA) wide (>20 mil) to handle LED drive currents. Place a ground pour under the SSOP package and connect thermal pad equivalents to VSS to improve thermal dissipation at +125C ambient.
When migrating code from PIC18F45K22 or PIC18F46K22 to PIC18F27K40, validate the Peripheral Pin Select (PPS) configuration registers - the K40 family has a different PPS unlock sequence. Do not exceed 5.5V on any pin; the K40 is NOT 5V tolerant on analog pins when VDD is below 3.0V. Always set the WDT to a reasonable timeout (typically 1-4 seconds) before field deployment to recover from firmware lockups.
The PIC18F27K40-E/SS internal oscillator is factory-calibrated to within +/- 1% across temperature. For UART communication above 115200 baud or for USB applications requiring accurate timing, configure the 64 MHz HFINTOSC with the PLL and use the PLL-typed clock output. Series termination resistors on EUSART TX lines reduce ringing on long PCB traces to external RS-485 transceivers.
Informations de conformité
RoHS compliant per Microchip product page. PIC18F27K40-E/SS is NOT AEC-Q100 qualified; for AEC-Q100 automotive use qualified variants per Microchip automotive grade catalog. Pricing refresh as of 2026-10-05.
