PIC18F2523-I/SO - 8-Bit 40MHz 32KB Flash MCU 28-SOIC | Microchip
Référence : PIC18F2523-I/SO ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.77 | $4,77 |
| 10 | $4.42 | $44,20 |
| 100 | $3.95 | $395,00 |
| 500 | $3.51 | $1 755,00 |
| 1 000 | $3.12 | $3 120,00 |
PIC18F2523-I/SO Présentation
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces on one die; the PIC18 family uses a RISC-based architecture with hardware multiply, providing deterministic instruction execution and C-compiler-friendly performance for embedded control applications.
Key features of the PIC18F2523 include 1536 bytes of RAM, 256 bytes of EEPROM, 25 digital I/O pins, 10-channel 12-bit A/D converter, two CCP modules, one Enhanced CCP (ECCP), two comparators, a USART with LIN support, an MSSP (SPI/I2C) port, and an internal oscillator block programmable from 31 kHz to 8 MHz (and up to 32 MHz with the 4X PLL). The nanoWatt technology adds multiple power-managed modes for battery-aware designs.
Architecturally the device uses a 16-bit wide instruction word, an 8-bit data path, a hardware 8x8 multiplier (single-cycle), and a 31-level hardware stack. The 12-bit ADC supports up to 12 input channels on larger pin-count variants, enabling sensor conditioning and motor-control feedback loops in a single chip.
Typical applications include industrial sensor interfaces, automotive body and HVAC control, appliance control panels, low-power remote sensor nodes, USB/serial bridging using the USART, and small motor drivers via CCP/PWM. The wide 2.0V-5.5V operating range also makes it attractive for portable battery-powered products.
When designing with this part, place decoupling capacitors (100 nF and 10 uF) within 5 mm of VDD/AVDD, tie MCLR through a 10 kohm pull-up to VDD, and ensure the 28-SOIC footprint accommodates a 300-mil wide-body SO land pattern for proper soldering.
This page consolidates current distributor pricing, drop-in PIC18F alternatives, and practical design notes beyond what the Microchip datasheet alone provides.
Alternatives de remplacement direct pour PIC18F2523-I/SO — 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 PIC18F2523-I/SO (même facteur de forme et même empreinte) — différant par Package, Operating Temperature, RAM, ADC, Communication Peripherals.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F2523-E/SO
✅ Remplacement direct✓ En stock
$5.2 / unité
Voir la fiche technique →PIC18F2520-I/SO
✅ Remplacement direct✓ En stock
$4.65 / unité
Voir la fiche technique →PIC18F2423-E/SO
✅ Remplacement direct✓ En stock
$4.42 / unité
Voir la fiche technique →PIC18F2520-E/SO
✅ Remplacement direct✓ En stock
$4.36 / unité
Voir la fiche technique →PIC18F2420-I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F2523-I/SO Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18 (8-bit RISC, 16-bit instruction word) |
| CPU Speed | 40 MHz (up to 10 MIPS, 200 ns instruction cycle) |
| Program Flash Memory | 32 KB (16K x 16) |
| RAM | 1536 bytes |
| EEPROM | 256 bytes |
| I/O Pins | 25 |
| A/D Converter | 10-channel, 12-bit |
| Comparators | 2 |
| CCP Modules | 2 CCP + 1 ECCP |
| Communication Peripherals | 1x USART (LIN), 1x MSSP (SPI / I2C) |
| Internal Oscillator | 31 kHz to 8 MHz; up to 32 MHz with 4X PLL |
| Tension d'alimentation | 2.0 V to 5.5 V |
| Température de fonctionnement | -40 C to +85 C (industrial, 'I' suffix) |
| Boîtier | 28-pin SOIC (SO), 300-mil wide-body |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de PIC18F2523-I/SO
| Broche 1 | MCLR/RE3 — Master Clear (reset) input or digital input RE3 |
| Broche 2 | RA0/AN0 — Digital I/O RA0 / analog input AN0 |
| Broche 3 | RA1/AN1 — Digital I/O RA1 / analog input AN1 |
| Broche 4 | RA2/AN2/VREF- — Digital I/O RA2 / analog AN2 / negative reference |
| Broche 5 | RA3/AN3/VREF+ — Digital I/O RA3 / analog AN3 / positive reference |
| Broche 6 | RA4/T0CKI — Digital I/O RA4 / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — Digital I/O RA5 / analog AN4 / SPI slave select |
| Broche 8 | VSS — Ground reference |
| Broche 9 | OSC1/RA7 — Crystal oscillator input / digital I/O RA7 |
| Broche 10 | OSC2/RA6 — Crystal oscillator output / digital I/O RA6 |
| Broche 11 | RC0/T1OSO/T1CKI — Digital I/O RC0 / Timer1 oscillator output / clock input |
| Broche 12 | RC1/T1OSI/CCP2 — Digital I/O RC1 / Timer1 oscillator input / CCP2 output |
| Broche 13 | RC2/CCP1 — Digital I/O RC2 / CCP1 PWM output |
| Broche 14 | RC3/SCK/SCL — Digital I/O RC3 / SPI clock / I2C clock |
| Broche 15 | RC4/SDI/SDA — Digital I/O RC4 / SPI data in / I2C data |
| Broche 16 | RC5/SDO — Digital I/O RC5 / SPI data out |
| Broche 17 | RC6/TX/CK — Digital I/O RC6 / USART TX / clock |
| Broche 18 | RC7/RX/DT — Digital I/O RC7 / USART RX / data |
| Broche 19 | VSS — Ground reference (second pin) |
| Broche 20 | VDD — Positive supply (2.0 V to 5.5 V) |
| Broche 21 | RB0/INT0/FLT0 — Digital I/O RB0 / external interrupt 0 / PWM fault input |
| Broche 22 | RB1/INT1 — Digital I/O RB1 / external interrupt 1 |
| Broche 23 | RB2/INT2 — Digital I/O RB2 / external interrupt 2 |
| Broche 24 | RB3/CCP2 — Digital I/O RB3 / CCP2 output (alternate) |
| Broche 25 | RB4 — Digital I/O RB4 (interrupt-on-change) |
| Broche 26 | RB5 — Digital I/O RB5 (interrupt-on-change) |
| Broche 27 | RB6/PGC — Digital I/O RB6 / ICSP clock |
| Broche 28 | RB7/PGD — Digital I/O RB7 / ICSP data |
Applications typiques
PIC18F2523-I/SO convient pour 6 applications: Industrial Sensor Interface Module, Automotive Body and HVAC Control, Appliance Control Panels, Portable Battery-Powered Sensor Nodes, Small Motor Control (BLDC / Stepper), USB/Serial Bridging and Embedded Gateways.
Industrial Sensor Interface Module
The PIC18F2523-I/SO fits industrial sensor-interface modules because its 10-channel 12-bit ADC and 32 KB flash provide enough code space for linearization, calibration tables, and Modbus or LIN protocol stacks. The 2.0 V-5.5 V supply supports 3.3 V and 5 V analog front-ends, while the 25 I/O lines directly drive optocouplers, relays, and isolated 4-20 mA loops. Internal oscillator accuracy is sufficient for UART-based fieldbuses; for tighter protocols an external crystal can be added. nanoWatt modes let the device enter sleep between sensor reads, dropping current to microamp levels for energy-harvesting nodes.
Recommandé
Automotive Body and HVAC Control
In automotive body controllers and HVAC panels, the PIC18F2523-I/SO provides LIN-bus communication via the integrated USART, 12-bit ADC for temperature and blend-door position sensing, and ECCP PWM for fan and motor drive. The 40 MHz core handles control loops for actuators and supports CAN emulation via SPI-to-CAN bridges if needed. The 28-SOIC package is well-suited for through-hole or SMT modules inside dashboard assemblies, and the industrial -40 C to +85 C range covers cabin electronics. Compared with 5 V-only predecessors, the 2.0 V-5.5 V range also tolerates cranking transients when paired with a TVS diode.
Recommandé
Appliance Control Panels
The PIC18F2523-I/SO is a strong fit for washing-machine, dishwasher, and oven control boards because its 25 I/O pins directly scan keypads, drive triac-zero-cross circuits, and read temperature sensors via the 12-bit ADC. The 1536-byte RAM and 32 KB flash comfortably host segmented LCD drivers, EEPROM-backed user settings, and fault-history logs. The MSSP peripheral handles SPI displays or I2C EEPROM expansion. nanoWatt idle modes minimize standby power, helping appliances meet energy-star ratings. The wide 2.0 V-5.5 V range tolerates rectified mains ripple in transformer-less power supplies.
Recommandé
Portable Battery-Powered Sensor Nodes
For battery-powered wireless sensor nodes, the PIC18F2523-I/SO's nanoWatt technology and 2.0 V minimum supply extend runtime from 2xAA alkaline or Li-coin cells. The 12-bit ADC reads thermistors, photodiodes, or strain gauges with sufficient resolution for environmental monitoring, while the internal 31 kHz to 8 MHz oscillator eliminates the need for external crystals, reducing BOM cost. Sleep current in the nanoamp range and fast wake-up via WDT or interrupt-on-change make it ideal for duty-cycled IoT edge devices that wake briefly to measure and transmit.
Recommandé
Small Motor Control (BLDC / Stepper)
The PIC18F2523-I/SO drives small BLDC and stepper motors using its Enhanced CCP (ECCP) module for complementary PWM outputs with programmable dead-band and fault input. The 12-bit ADC samples back-EMF or current-sense amplifiers for sensorless commutation, while the 40 MHz core executes Field-Oriented Control loops within the required PWM period. Hardware quadrature encoder interface (via CCP) supports closed-loop position control. The 28-SOIC footprint fits compact motor-driver PCBs alongside gate drivers such as the MCP14 family.
Recommandé
USB/Serial Bridging and Embedded Gateways
The PIC18F2523-I/SO serves as a USB-to-UART or USB-to-I2C/SPI bridge for embedded gateways, using the integrated USART and MSSP peripherals plus an external USB-serial converter such as the MCP2200 or MCP2210. The 32 KB flash hosts lightweight TCP/IP or MQTT-over-serial stacks for edge nodes forwarding sensor data to a host processor. ECCP and ADC provide auxiliary analog/digital functions, reducing the need for a secondary MCU. The 2.0 V-5.5 V supply supports direct connection to 3.3 V hosts and 5 V legacy UART equipment.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F2523-I/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F2523-E/SO | PIC18F2520-I/SO | PIC18F2423-E/SO | PIC18F2520-E/SO | PIC18F2420-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Program Flash | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB | 16 KB |
| ADC Resolution | 12-bit (10 ch) | 12-bit (10 ch) | 10-bit (8 ch) | 12-bit (10 ch) | 10-bit (8 ch) | 10-bit (8 ch) |
| RAM | 1536 B | 1536 B | 1536 B | 768 B | 1536 B | 768 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
| Supply Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
Principaux différenciateurs
- 12-bit ADC vs 10-bit on legacy PIC18F2520 (vs PIC18F2520-I/SO)
- Industrial -40 C to +85 C standard; E variant extends to +125 C (vs PIC18F2523-E/SO)
- 32 KB flash with ECCP and nanoWatt power management (vs PIC18F2423-E/SO)
Notes de conception
Place a 100 nF decoupling capacitor within 5 mm of VDD (pin 20) and a bulk 10 uF aluminum-polymer or ceramic capacitor on the same supply trace. For analog references, add a separate AVDD decoupling network if the application uses the 12-bit ADC at full bandwidth. The 2.0 V minimum supply enables direct Li-coin cell operation, but peak CPU clock must be derated to 4 MHz below 4.2 V per the PIC18 voltage-frequency curve.
Use a 300-mil wide-body SOIC land pattern (SOIJ-style footprint compatible) with exposed pad not required for the 28-pin variant. Keep the crystal traces short and guard them with a ground ring; the internal oscillator eliminates the crystal if 2 percent frequency accuracy is acceptable for UART baud rates. Reserve a 6-pin header or Tag-Connect footprint for ICSP using RB6/PGC and RB7/PGD so the board can be re-programmed in-circuit.
Do not leave MCLR floating - tie it through a 10 kohm pull-up to VDD to prevent spurious resets. When migrating from PIC18F2520 to PIC18F2523, the ADC initialization sequence must be updated because the 12-bit converter adds a longer acquisition time. Code exceeding 16 KB will not fit on the PIC18F2423 family and must be split or recompiled before migrating down. Avoid driving CCP outputs above their 25 mA source/sink rating without a buffer MOSFET.
At 40 MHz and 5 V the PIC18F2523-I/SO consumes approximately 11 mA active and below 1 uA in sleep. Estimated: at 25 C ambient in still air, the 28-SOIC package self-heats by less than 5 C under full-load MCU activity, well below the 150 C junction limit. No external heatsink is required for typical embedded workloads, but the copper pour around VDD/VSS should be maximized to reduce theta_JA.
Informations de conformité
RoHS compliant per FindMyChip and Microchip product page. Not AEC-Q100 qualified; PIC18F2523-I/SO is industrial grade (-40C to +85C). For AEC-Q100 needs, Microchip offers automotive-grade variants such as PIC18F2523-I/SO under specific part numbers - consult Microchip automotive product line.
