PIC18F2515T-I/SO - 8-bit 40MHz PIC MCU 48KB Flash 28-SOIC | Microchip
料号： PIC18F2515T-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.39 | $63.90 |
| 100 | $5.68 | $568.00 |
| 500 | $5.05 | $2,525.00 |
| 1,000 | $4.45 | $4,450.00 |
PIC18F2515T-I/SO 概述
Background knowledge: a microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (FLASH or ROM), data memory (RAM), and programmable I/O with on-chip peripherals. The PIC18 family uses an enhanced 8-bit Harvard RISC architecture with a 16-bit instruction word, sitting in the broader taxonomy: microcontroller -> embedded processor -> semiconductor IC. The PIC18F2515 belongs to the mid-range performance tier of PIC microcontrollers, designed for control-oriented applications requiring moderate code density and real-time deterministic behavior.
Key features include 48KB (24K x 16) of self-programmable FLASH, 3968 bytes of RAM, 256 bytes of EEPROM, 25 digital I/O pins, a 10-bit ADC with multiple channels, two 8-bit and three 16-bit timers, an enhanced USART, MSSP (SPI/I2C), dual analog comparators, and nanoWatt power management with multiple low-power sleep modes. The ICSP (In-Circuit Serial Programming) interface allows in-field firmware updates without removing the device from the board.
The PIC18F2515 uses Microchip's standard Harvard architecture with separate code and data buses, providing deterministic 4-cycle instruction execution at the system clock. The FLASH memory supports self-programming under firmware control, enabling bootloader-based firmware updates and nonvolatile data storage. The device supports clock sources including external crystal, external clock, and internal oscillator blocks with PLL, enabling flexible system design.
Typical applications include industrial control systems, sensor signal conditioning, low-to-medium complexity motor control, HVAC control boards, smart metering, consumer appliance controllers, USB-interface devices using the parallel port, and general-purpose embedded control. The wide operating temperature range (-40C to +85C industrial grade) suits outdoor and harsh-environment deployments.
When designing with this device, ensure decoupling capacitors (100nF ceramic) are placed close to VDD/VSS pairs to maintain ADC accuracy, and verify the oscillator configuration bits match the chosen clock source. The 5V-only supply requirement means level shifters are needed for 3.3V peripherals.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC18F family, and practical design notes not found in the standalone manufacturer datasheet.
直接替换替代料： PIC18F2515T-I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F2515T-I/SO （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Operating Temperature, Program Memory (Flash), Maximum CPU Speed.
快速对比工具——选择替代料号进行并排对比：
PIC18F2510T-I/SO
✅ 直接替换✓ 有现货
$3.5 / 个
查看数据手册 →PIC18F2515T-I/ML
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC18F2515-I/SO
✅ 直接替换✓ 有现货
$4.32 / 个
查看数据手册 →PIC18F2515T-I/SP
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC18F2610T-I/SO
✅ 直接替换✓ 有现货
$4.65 / 个
查看数据手册 →PIC18F24K50-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.05 / 个
查看数据手册 →PIC18F2515T-I/SO 最大额定值与电气特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Core | PIC18 |
| Maximum Clock Speed | 40 MHz |
| Program Memory (FLASH) | 48 KB (24K x 16) |
| RAM | 3968 bytes |
| EEPROM | 256 bytes |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 25 |
| Timers | Two 8-bit, three 16-bit (combined) |
| Communication Interfaces | Enhanced USART, MSSP (SPI/I2C) |
| 封装 | 28-SOIC (SO) 7.5 mm width |
| 安装类型 | Surface Mount |
| 工作温度 | -40 C to +85 C (Industrial) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS 状态 | Compliant |
PIC18F2515T-I/SO 引脚配置
| 引脚 1 | MCLR/VPP/RE3 — Master Clear (reset) input or programming voltage / Port E bit 3 |
| 引脚 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| 引脚 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| 引脚 4 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC VREF- |
| 引脚 5 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC VREF+ |
| 引脚 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| 引脚 7 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI slave select |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/CLKI/RA7 — Oscillator input / external clock / Port A bit 7 |
| 引脚 10 | OSC2/CLKO/RA6 — Oscillator output / clock output / Port A bit 6 |
| 引脚 11 | RC0/T1OSO/T13CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| 引脚 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| 引脚 13 | RC2/CCP1 — Port C bit 2 / CCP1 module |
| 引脚 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| 引脚 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| 引脚 16 | RC5/SDO — Port C bit 5 / SPI data out |
| 引脚 17 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| 引脚 18 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply voltage (4.2V to 5.5V) |
| 引脚 21 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| 引脚 22 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| 引脚 23 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| 引脚 24 | RB3/CCP2 — Port B bit 3 / CCP2 (alt) |
| 引脚 25 | RB4 — Port B bit 4 |
| 引脚 26 | RB5 — Port B bit 5 |
| 引脚 27 | RB6/PGC — Port B bit 6 / ICSP clock |
| 引脚 28 | RB7/PGD — Port B bit 7 / ICSP data |
典型应用
PIC18F2515T-I/SO 适用于 7 应用s: Industrial Control Systems, Sensor Signal Conditioning, HVAC Control Boards, Smart Metering and Energy Monitoring, Consumer Appliance Controllers, USB Device Interface Bridging, Automotive Body and Comfort Electronics.
Industrial Control Systems
The PIC18F2515T-I/SO fits industrial control applications due to its -40C to +85C industrial temperature grade, 4.2-5.5V supply tolerance to 24V industrial bus rails (with regulation), and 25 I/O pins for sensor and actuator interfacing. Its 40MHz core provides 10 MIPS of deterministic throughput for real-time PID loops. Place 100nF ceramic decoupling capacitors close to each VDD/VSS pin pair, and use the ICSP interface to enable in-field firmware updates over the equipment's service port without removing the MCU.
推荐
Sensor Signal Conditioning
The PIC18F2515T-I/SO's 10-bit ADC and configurable analog comparators make it well-suited for sensor signal conditioning in process control and instrumentation. Its 25 digital I/O lines can interface multiplexed sensor arrays while the MSSP (SPI/I2C) connects to digital sensors. Use the ADC with a stable reference and adequate acquisition time for accurate readings, and leverage the nanoWatt sleep modes to extend battery life in remote sensor nodes.
推荐
HVAC Control Boards
The PIC18F2515T-I/SO is appropriate for HVAC control boards where 48KB of FLASH accommodates protocol stacks plus control logic, and 25 I/O pins handle thermostat inputs, fan outputs, and valve controls. The enhanced USART supports Modbus RTU communication with building management systems, while the 16-bit timers drive triac-controlled AC loads. Operate from a 5V regulated rail derived from the 24VAC HVAC line.
推荐
Smart Metering and Energy Monitoring
The PIC18F2515T-I/SO's 10-bit ADC and enhanced peripherals support smart electricity, water, and gas meter designs. Its 48KB FLASH enables on-board metering algorithms, calibration tables, and optional display drivers, while 256 bytes of EEPROM store nonvolatile meter constants and tamper logs. The MSSP drives a segmented LCD driver or character display, and the USART connects to AMR (Automated Meter Reading) modems.
推荐
Consumer Appliance Controllers
The PIC18F2515T-I/SO powers controllers in washing machines, dishwashers, ovens, and other major appliances where its 25 I/O pins interface motor drivers, keypad inputs, and LED or 7-segment displays. Its 48KB FLASH fits full state-machine logic plus safety monitors, and the self-programmable FLASH supports field firmware updates for feature additions. Industrial temperature grade ensures reliable operation across kitchen and laundry environments.
推荐
USB Device Interface Bridging
Although the PIC18F2515T-I/SO lacks native USB, its 48KB FLASH and 3968-byte RAM make it a viable USB device bridge when paired with an external USB transceiver (e.g., FTDI FT232) or a USB-capable companion chip. Use the enhanced USART for command-channel communication and MSSP for high-speed data transfer. For designs needing native USB, upgrade to PIC18F2455-I/SO or PIC18F4550 in the same 28-SOIC footprint.
推荐
Automotive Body and Comfort Electronics
The PIC18F2515T-I/SO fits non-safety automotive body controllers such as seat adjusters, mirror modules, interior lighting, and climate control panels where its 25 I/O pins interface buttons, LEDs, and small motor drivers. The 48KB FLASH accommodates LIN protocol stacks plus application logic. Add external transient protection (TVS diodes) on supply and I/O lines to survive load-dump events; for safety-critical paths choose AEC-Q100 qualified PIC18 alternatives.
推荐
推荐产品汇总
工程参考数据： PIC18F2515T-I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F2510T-I/SO | PIC18F2515T-I/ML | PIC18F2515-I/SO | PIC18F2515T-I/SP | PIC18F2610T-I/SO | PIC18F24K50-I/SO |
|---|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-QFN - different footprint | 28-SOIC - same | 28-SPDIP - different (through-hole) | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Memory | 48 KB | 32 KB | 48 KB | 48 KB | 48 KB | 64 KB | 16 KB |
| RAM | 3968 bytes | 1536 bytes | 3968 bytes | 3968 bytes | 3968 bytes | 3968 bytes | 2048 bytes |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 48 MHz |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| USB Support | No (external required) | No | No | No | No | No | Yes (USB 2.0 FS) |
| XLP Low-Power Modes | nanoWatt (basic) | nanoWatt (basic) | nanoWatt (basic) | nanoWatt (basic) | nanoWatt (basic) | nanoWatt (basic) | XLP (advanced, sub-uA) |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- 48KB FLASH - mid-density sweet spot （对比 PIC18F2510T-I/SO)
- Same-family scalability without firmware changes （对比 PIC18F2610T-I/SO)
- Modern XLP alternative exists with caveats （对比 PIC18F24K50-I/SO)
设计说明
The PIC18F2515T-I/SO requires a clean 4.2V-5.5V regulated supply. Place a 100nF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair (there are two VDD and two VSS pins on this 28-SOIC device). Add a bulk 10uF tantalum or ceramic capacitor at the regulator output to handle transient current spikes during peripheral switching. Avoid routing high-current switching traces near VDD traces to minimize supply noise coupled into the ADC reference.
Keep the trace from the crystal or oscillator to OSC1/OSC2 pins under 10mm and shield them with a grounded guard trace to reduce EMI susceptibility. Place the MCLR pull-up resistor (typically 10k) close to the MCLR pin with a short trace. For ADC accuracy, route analog input traces away from digital switching signals, and provide a star-ground topology for AGND and DGND if the board mixes analog and digital grounds.
When using the MSSP in SPI mode at high speeds (>5MHz), keep SCK, SDO, and SDI traces matched in length (within 5mm) and as short as practically possible. Add 22-100 ohm series resistors near the source on SCK and SDO to dampen reflections if the bus exceeds 50mm total length. For I2C, populate the bus with proper pull-up resistors (4.7k for 100kHz, 2.2k for 400kHz) sized for the total bus capacitance.
Do not leave the MCLR pin floating; a floating MCLR can cause sporadic resets due to noise. Ensure configuration bits are set correctly for the chosen oscillator mode - mismatched configuration bits are a common cause of 'dead' PIC18 boards. When migrating between PIC18F2510/2515/2610, verify code-size limits and check the interrupt vector map (the 2610 has extended vectors). The 'T' suffix denotes Tape & Reel packaging only - confirm your pick-and-place setup supports 28-SOIC SOIC footprints before ordering.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C) but not AEC-Q100 qualified - for safety-critical automotive applications, choose AEC-Q100 qualified PIC18 variants such as PIC18F46K22-I/P.
