PIC18F2523-E/SP - 8-Bit MCU 32KB Flash 40MHz 28-SPDIP | Microchip
MPN: PIC18F2523-E/SP ✓ Hoạt độngPIC18F2523-E/SP Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile RAM, and a rich set of on-chip peripherals (A/D converters, timers, communication controllers, and I/O). The PIC18F family sits above the PIC16 entry-level line in Microchip's taxonomy, offering more memory, more peripherals, and faster instruction throughput. It belongs to the broader 8-bit MCU class (PIC18 -> 8-bit PIC -> microcontroller -> embedded computing -> semiconductor), designed to bridge the gap between simple 8-bit control loops and higher-performance 16-/32-bit cores at very low cost and power.
The PIC18F2523's headline features include hardware single-cycle 8x8 multiplication, an internal oscillator that can be tuned from 31 kHz to 8 MHz (and up to 32 MHz with the 4x PLL), a Fail-Safe Clock Monitor that safely shuts the system down if the primary clock is lost, an enhanced addressable USART, MSSP with I2C and SPI support, a 12-bit A/D converter with up to 10 channels, and nanoWatt power-management modes for energy-sensitive applications. An enhanced 16-bit capture/compare/PWM module supports motor-control and lighting use cases. The -E suffix designates the extended temperature grade (-40 °C to +125 °C), and the -40 MHz / 40 MHz operation is the standard rate; the extended-grade die is specified across automotive and industrial ranges.
The architecture uses a Harvard memory layout with separate program and data buses, a 16-bit instruction word, and an instruction pipeline that lets most operations complete in one cycle. Hardware multiplier support and the C-optimized instruction set accelerate the kind of byte- and bit-level DSP work common in consumer and industrial control loops. Code protection, a separate watchdog timer with its own on-chip low-power RC oscillator, and In-Circuit Serial Programming (ICSP) complete the picture. Boot memory region and configuration-word protection safeguard against accidental reprogramming in the field.
Typical applications include industrial control panels, building automation sensor nodes, low-end motor drivers and appliance controllers, USB-to-UART bridges (when paired with the PIC18F family USB-capable siblings), temperature and pressure monitoring devices, automotive interior modules (under -E temperature grade), and consumer devices that benefit from generous Flash and reliable analog peripherals. The 12-bit ADC and nanoWatt modes are particularly useful for battery-powered instrumentation.
Designers should note that pin ordering and package suffix matter: the -E/SP part is the extended-temperature SPDIP variant, while -E/SO is the wide-SOIC package and -E/ML is the QFN. All three are code-compatible; the only practical difference is the PCB footprint. When migrating between them, ensure the lead-free solder process and the in-circuit programming header are repackaged accordingly.
This page bundles distributor pricing, real drop-in alternatives, and PCB-level design guidance that aren't visible from the manufacturer datasheet alone, giving engineers a single starting point for selecting and qualifying the PIC18F2523-E/SP for volume production.
Bộ thay thế dễ dàng lắp đặt cho PIC18F2523-E/SP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F2523-E/SP (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core, Operating Temperature, Timers.
PIC18F2523-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F2423-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F2520-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F2523-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F4523-E/SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F2523-E/SP Tỷ lệ tối đa & tính chất điện
| Program Memory Type | Flash |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 1.5 KB (1536 bytes) |
| CPU Core | PIC18, enhanced 8-bit Harvard RISC |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Operating Voltage Range | 2.0 V to 5.5 V |
| Digital I/O Pins | 25 |
| A/D Converter | 12-bit, up to 10 channels |
| Timers | Multiple 8-bit and 16-bit (Timer0/1/2/3) |
| Capture/Compare/PWM | Enhanced CCP, 16-bit, multiple channels |
| Communication | EUSART (LIN-capable), MSSP (I2C/SPI) |
| Internal Oscillator | 31 kHz to 8 MHz, up to 32 MHz with 4x PLL |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Fail-Safe Clock Monitor | Yes |
| Hardware Multiplier | 8 x 8 single-cycle |
| Operating Temperature Range (E suffix) | -40C to +125C |
| Hộp | 28-SPDIP (Skinny Plastic DIP, 0.300" / 7.62 mm pitch) |
| Kiểu lắp đặt | Through-Hole |
| Lead-Free / RoHS | Lead-Free finish; RoHS compliance per lot |
| In-Circuit Programming | ICSP via 2-wire interface (PGC/PGD) |
Cấu hình chân PIC18F2523-E/SP
| Chân 1 | MCLR/VPP/THV — Master Clear (reset input) / ICSP programming voltage / triple-hybrid voltage |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC negative reference |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC positive reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (digital-only, open-drain) |
| Chân 7 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| Chân 8 | VSS — Ground |
| Chân 9 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / PORTA bit 7 |
| Chân 10 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| Chân 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 input/output |
| Chân 13 | RC2/CCP1 — PORTC bit 2 / CCP1 input/output |
| Chân 14 | RC3/SCK/SCL — PORTC bit 3 / MSSP SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — PORTC bit 4 / MSSP SPI data in / I2C data |
| Chân 16 | RC5/SDO — PORTC bit 5 / MSSP SPI data out |
| Chân 17 | RC6/TX/CK — PORTC bit 6 / EUSART TX / EUSART clock |
| Chân 18 | RC7/RX/DT — PORTC bit 7 / EUSART RX / EUSART data |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Chân 22 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Chân 23 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Chân 24 | RB3/INT3 — PORTB bit 3 / external interrupt 3 / PGM low-voltage programming |
| Chân 25 | RB4 — PORTB bit 4 |
| Chân 26 | RB5 — PORTB bit 5 |
| Chân 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Ứng dụng tiêu biểu
PIC18F2523-E/SP phù hợp cho 7 Áp dụngs: Industrial Control Panel MCU, Automotive Interior Module, Battery-Powered Sensor Instrument, Low-End Motor Drive / PWM Controller, USB / UART Bridge Dongle, Consumer Appliance Controller, Education / Development Board Core.
Industrial Control Panel MCU
The PIC18F2523-E/SP fits industrial control panels because its 32 KB Flash swallows full-featured C-coded HMIs while the 25 I/O pins drive keypads, multiplexed 7-segment displays, relays, and triac isolators. The 12-bit ADC reads thermocouple amplifiers and 4-20 mA current loops at 1 ksps with ~70 dB SNR, well within process-control accuracy. Hardware 8x8 multiplication accelerates PID loops and the nanoWatt sleep currents drop panel standby to single-digit microamps. Place a watchdog-fed supervisor and an external 32 kHz crystal for Fail-Safe Clock Monitor recovery in noisy plant environments.
Được đề xuất
Automotive Interior Module
PIC18F2523-E/SP's -40 °C to +125 °C extended temperature grade makes it a fit for non-safety automotive interior modules - HVAC blend-door controllers, seat-position memory, dashboard lighting, and instrument-cluster LED drivers. The 12-bit ADC accurately reads ambient-light sensors, the EUSART implements LIN bus slave (the family is widely used for LIN), and the 40 MHz core handles 10 MIPS of multiplexed LED-PWM duty-cycle math without sweating margins. Use the Fail-Safe Clock Monitor to recover from accessory-load transients and pair with an automotive-grade TVS to pass load-dump compliance.
Được đề xuất
Battery-Powered Sensor Instrument
Battery-powered sensor instruments benefit from PIC18F2523-E/SP's nanoWatt modes (deep sleep <1 µA typical, RTCC on), 12-bit ADC for sensor digitization, and EUSART for Bluetooth-classic bridging via a companion HC-05. The 32 KB Flash holds protocol stacks plus local calibration tables, while the 1.5 KB RAM permits ring-buffer-style data logging. Battery-life modeling from datasheet sleep currents suggests a 2000 mAh coin cell can power a 1 Hz sample-loop for multiple years. Place decoupling within 5 mm of VDD/VSS and route ADC traces away from switching nodes.
Được đề xuất
Low-End Motor Drive / PWM Controller
The PIC18F2523-E/SP drives BLDC and stepper motors through its enhanced 16-bit CCP/PWM module, capable of complementary outputs and programmable dead-band control. The 25 I/O pins feed H-bridge gate drivers and back-EMF sensing channels, while the 12-bit ADC samples phase current every PWM period, enabling field-oriented control loops at modest kRPM. The 40 MHz / 10 MIPS instruction throughput is enough for trapezoidal commutation and slow-motion FOC on small motors. Pair the MCU with gate drivers like the TC4427 and current-sense amplifiers for a complete micro-drive solution.
Được đề xuất
USB / UART Bridge Dongle
PIC18F2523-E/SP serves as the MCU core for UART-to-UART or SPI-to-UART bridge dongles used in legacy industrial equipment upgrades. While the family without on-chip USB needs an external CP2102-style bridge, the firmware-resident PIC18 still handles protocol conversion, flow control, and address lookup. The MSSP peripheral supports I2C/SPI master mode for sensor-hub aggregation, and the internal 31 kHz to 32 MHz PLL trims baud-rate timing without an external crystal, saving BOM cost. Use the watchdog timer to recover dongles from bus stalls.
Được đề xuất
Consumer Appliance Controller
The PIC18F2523-E/SP integrates cleanly into consumer appliance designs - washing-machine control boards, coffee machines, kitchen-hood controllers, and HVAC thermostats. The 32 KB Flash hosts menu logic, the 12-bit ADC reads thermistor-style temperature sensors, and the enhanced PWM module drives buzzer tones and triac-phase cuts for heating elements. The internal oscillator eliminates a 2 USD crystal in cost-sensitive appliances, while the -E temperature grade survives the elevated chassis temperatures near heating elements. Pre-program the ICSP bootloader to enable field firmware updates.
Được đề xuất
Education / Development Board Core
PIC18F2523-E/SP is a textbook-level microcontroller for university embedded courses and hobbyist projects - through-hole 28-SPDIP fits 0.1" proto boards and breadboards without a reflow oven. Its 32 KB Flash stores student programs, the 25 I/O connect LED arrays and 7-segment displays, and ICSP allows in-circuit programming during lab sessions. The C-optimized instruction set is well-documented, supported by MPLAB X IDE + XC8 compiler, and surrounded by hundreds of Microchip app notes. Pick the PIC18F2523-E/SO variant when surface-mount reflow is preferred in a maker-class board.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F2523-E/SP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F2523-I/SP | PIC18F2423-E/SP | PIC18F2520-E/SP | PIC18F4523-E/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP | 28-SPDIP | 28-SPDIP | 28-SPDIP (28-pin subset of 40/44-pin family) |
| Program Memory | 32 KB Flash | 32 KB Flash | 16 KB Flash | 32 KB Flash | 32 KB Flash |
| RAM | 1.5 KB | 1.5 KB | 1.0 KB | 1.5 KB | 1.5 KB |
| Maximum CPU Speed | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 10-bit | 12-bit |
| Operating 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 |
| Temperature Grade | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) |
| I/O Count | 25 | 25 | 25 | 25 | 36 |
Bảo phân biệt quan trọng
- 28-pin SPDIP with extended temperature grade (vsPIC18F2523-I/SP)
- 12-bit ADC resolution (vsPIC18F2520-E/SP)
- Same-package drop-in compatibility across the family (vsPIC18F2423-E/SP)
Ghi chú thiết kế
Decouple VDD/VSS pairs with 100 nF ceramic X7R capacitors placed within 5 mm of each supply pin pair and add a bulk 10 µF electrolytic or tantalum on the VDD rail. Estimated: the PIC18F2523 sourcing 25 mA on the I/O and clocked at 40 MHz draws a typical I_DD of 12-16 mA, so the regulator must deliver 50 mA with margin. Adding the Fail-Safe Clock Monitor requires the secondary oscillator to be active before enabling, otherwise the FSCM will mis-detect clock loss.
Route the high-impedance analog inputs (AN0-AN4) over a contiguous analog ground island separated from switching nodes by a single-star ground tie at the VDD bulk cap. Place the ICSP header (PGC/PGD, MCLR/VPP) within 50 mm of the MCU pins to avoid signal integrity issues during programming. The 28-SPDIP package has 7.62 mm pitch - leave 200 mil clearance above the package for socketed programming and breadboard reproducibility. For the SOIC version, pad extensions ease hand-solder rework.
MSSP-driven I2C lines exceeding 50 mm need 4.7 kΩ pull-ups to VDD; with 25 MCU-load SDI/SDA inputs in parallel, total capacitance may approach 100 pF, slowing the rise time below the I2C spec. Decrease pull-up resistors to 2.2 kΩ or switch the bus to 100 kHz Standard mode if 400 kHz is required. The EUSART TX line driving a 250 mm cable needs a 10 kΩ series terminator at the source end to dampen reflections from capacitive loads.
Do not confuse -E suffix (extended -40C to +125C) with the -I (industrial -40C to +85C) for outdoor or automotive applications. Verify the configuration words on each ICSP programming pass - unprogrammed WDT or BOR defaults can leave the part running an unintended oscillator. When migrating code from PIC18F2520 to PIC18F2523, update the ADC configuration to 12-bit mode and re-validate conversion timing. Estimating from datasheet: at 5 V and 40 MHz, the ADC clock required is 4-16 T_ADC for full-precision conversion.
The 28-SPDIP package typically exhibits theta_JA around 80 C/W in still air, so worst-case power dissipation of 250 mW (10 MIPS, 5 V, 25 mA I/O sourcing) yields a junction rise of ~20 C above ambient. At -E upper limit +125 C ambient, junction hits ~145 C - well below the 150 C maximum but with little margin. Heavily-loaded designs driving high-current I/O should derate by enforcing fewer simultaneously active outputs or shifting to the SOIC/QFN package, which halves thermal resistance.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip material declarations. Lead-free finish is standard; halogen-free status not explicitly noted in the Verified Web Data. Not AEC-Q100 qualified - for safety-critical automotive, select a specifically AEC-Q100-qualified PIC18 part.
