PIC18LF27J53-I/SP - 8-bit 48MHz USB MCU, 128KB Flash | Microchip
料号： PIC18LF27J53-I/SP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.6 | $46.00 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.2 | $3,200.00 |
PIC18LF27J53-I/SP 概述
An 8-bit microcontroller (MCU) is a programmable single-chip computer that processes data in 8-bit units and integrates CPU, RAM, non-volatile Flash memory, and peripherals such as timers, ADC, and communication interfaces. Within the broader semiconductor hierarchy, the PIC18LF27J53 belongs to the PIC18 family (8-bit PIC RISC architecture) -> microcontroller -> microcontrollers & processors -> integrated circuit. The 'LF' prefix designates the low-voltage (2.0-3.6 V) variant, suitable for battery-powered designs, while 'J53' marks the USB-enabled sub-family with nanoWatt XLP technology.
Key features include 128 KB self-programmable Flash, 4 KB RAM, an integrated USB 2.0 full-speed transceiver, 10-bit ADC with up to 13 channels, two comparators, three 16-bit timers, two UART, two SPI, two I2C, and nanoWatt XLP power management with deep sleep. The device supports up to 25 mA source/sink on I/O and includes CTMU for capacitive touch sensing.
The PIC18LF27J53 uses Microchip's enhanced Harvard RISC architecture with a modified 16-bit instruction word executed in two bytes of Flash, achieving 12 MIPS at 48 MHz while consuming only nanoWatts in sleep. The integrated USB 2.0 SIE eliminates external PHY requirements and the on-chip 3.3 V regulator simplifies dual-rail designs.
Typical applications include USB peripherals (HID, CDC, custom device classes), low-power sensor nodes with USB charging, capacitive touch user interfaces, industrial data loggers, and consumer electronics requiring USB connectivity with extended battery life.
When designing with this part, observe the 2.0-3.6 V supply constraint for the 'LF' variant and the 28-pin SPDIP footprint's through-hole clearance. For SMT designs, consider the SOIC-28 and QFN-28 package variants within the same PIC18LF27J53 family.
直接替换替代料： PIC18LF27J53-I/SP ——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： PIC18LF27J53-I/SP （相同外形与封装尺寸） ——差异在于 ADC, Package, I/O Pins, Mounting Type, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC18LF27J53-I/SO
✅ 直接替换✓ 有现货
$4.52 / 个
查看数据手册 →PIC18LF26J53-I/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF27J13-I/SP
✅ 直接替换✓ 有现货
$3.31 / 个
查看数据手册 →PIC18LF26J53-I/ML
✅ 直接替换✓ 有现货
$2.35 / 个
查看数据手册 →PIC18LF46J53-I/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC18LF26J13-I/SP
✅ 直接替换✓ 有现货
$2.65 / 个
查看数据手册 →PIC18LF27J53-I/SP 最大额定值与电气特性
| Core Architecture | PIC (8-bit RISC) |
| Family | PIC18FxxJxx (PIC18 J-series with USB) |
| Series | PIC18LF27J53 |
| CPU Speed | 48 MHz (12 MIPS) |
| Program Memory (Flash) | 128 KB |
| RAM | 4 KB |
| 电源电压 | 2.0 V to 3.6 V |
| 工作温度 | -40C to +85C (Industrial) |
| I/O Pins | 25 (max digital I/O) |
| USB | USB 2.0 Full-Speed (12 Mbps) Device, integrated SIE |
| ADC | 10-bit, 13 channels |
| Comparators | 2 |
| Timers | 3 x 16-bit + 1 x 8-bit |
| UART | 2 |
| SPI | 2 |
| I2C (MSSP) | 2 |
| 封装 | 28-pin SPDIP (0.300") |
| 安装类型 | Through-Hole (DIP) |
| RoHS 状态 | Compliant |
| MSL 等级 | Not applicable (through-hole) |
PIC18LF27J53-I/SP 引脚配置
| 引脚 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| 引脚 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| 引脚 3 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| 引脚 4 | RA3/AN3 — Digital I/O / Analog input channel 3 |
| 引脚 5 | RA4/AN4 — Digital I/O / Analog input channel 4 / Timer0 clock |
| 引脚 6 | RA5/AN5 — Digital I/O / Analog input channel 5 |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | OSC1/CLKI/RA7 — External oscillator input / Digital I/O |
| 引脚 9 | OSC2/CLKO/RA6 — External oscillator output / Digital I/O |
| 引脚 10 | RC0 — Digital I/O / PWM output |
| 引脚 11 | RC1 — Digital I/O / PWM output |
| 引脚 12 | RC2 — Digital I/O / PWM output |
| 引脚 13 | VBUS — USB VBUS sensing input |
| 引脚 14 | VUSB — USB 3.3V regulator output (decoupling cap) |
| 引脚 15 | D+ — USB D+ data line |
| 引脚 16 | D- — USB D- data line |
| 引脚 17 | RC6 — Digital I/O / UART TX |
| 引脚 18 | RC7 — Digital I/O / UART RX |
| 引脚 19 | RB0 — Digital I/O / External interrupt |
| 引脚 20 | RB1 — Digital I/O |
| 引脚 21 | RB2 — Digital I/O |
| 引脚 22 | RB3 — Digital I/O |
| 引脚 23 | RB4 — Digital I/O / interrupt-on-change |
| 引脚 24 | RB5 — Digital I/O / interrupt-on-change |
| 引脚 25 | RB6 — Digital I/O / interrupt-on-change / ICSP |
| 引脚 26 | RB7 — Digital I/O / interrupt-on-change / ICSP |
| 引脚 27 | VDD — Positive supply (2.0-3.6 V) |
| 引脚 28 | MCLR/RE3 — Reset input / Digital I/O |
典型应用
PIC18LF27J53-I/SP 适用于 6 应用s: USB HID Peripheral Device, USB CDC Virtual COM Port, Battery-Powered Sensor Node, Capacitive Touch User Interface, Industrial Data Logger with USB, USB Charger / Power Bank Controller.
USB HID Peripheral Device
The PIC18LF27J53-I/SP is purpose-built for USB HID peripherals such as custom keyboards, mice, game controllers, and human-interface devices. Its integrated USB 2.0 full-speed SIE eliminates external PHY components, reducing BOM cost by $0.50-1.00. The 48 MHz CPU (12 MIPS) handles HID report processing at the USB 1 ms polling interval with margin. The 128 KB Flash hosts Microchip's USB stack plus HID class driver; 4 KB RAM is sufficient for 8-byte HID reports plus descriptor buffers. With 2.0-3.6 V supply and nanoWatt XLP, the part operates directly from a 3.3 V LDO for low-power USB peripherals.
推荐
USB CDC Virtual COM Port
The PIC18LF27J53-I/SP enables USB-to-UART replacement by emulating a virtual COM port over USB CDC, eliminating FTDI-style bridge chips. The 48 MHz CPU runs the CDC class driver while supporting up to 12 Mbps USB bandwidth, useful for debug consoles, firmware update channels, and industrial data acquisition. The on-chip 3.3 V regulator provides clean digital rail from USB VBUS. The 128 KB Flash accommodates the CDC stack plus application firmware, and the 4 KB RAM sustains CDC line-coding and endpoint buffers without dropping frames.
推荐
Battery-Powered Sensor Node
The PIC18LF27J53-I/SP fits low-power sensor nodes that require periodic USB charging or data dump. The nanoWatt XLP technology delivers deep-sleep currents below 1 uA with RAM retention, extending 2x AA battery life to multiple years in duty-cycled applications. The 2.0-3.6 V supply operates directly from alkaline or Li-ion chemistries. The 10-bit ADC with 13 channels supports multi-zone sensor reading, while the integrated USB enables battery charging and data offload without extra ICs. The 25 mA source/sink I/O directly drives relays or LEDs in industrial nodes.
推荐
Capacitive Touch User Interface
The PIC18LF27J53-I/SP's integrated Charge Time Measurement Unit (CTMU) and nanoWatt XLP make it an excellent fit for capacitive touch buttons, sliders, and proximity sensors. The CTMU enables touch measurement with simple RC network plus MCU capture, no dedicated touch IC required. The 13-channel ADC can scan 13 touch electrodes sequentially. The 48 MHz CPU handles touch decoding algorithms with sub-10 ms response time. The 128 KB Flash fits touch libraries plus HMI state machine, and the 28-SPDIP package suits through-hole hobby and prototype designs.
推荐
Industrial Data Logger with USB
The PIC18LF27J53-I/SP supports industrial data-logging applications that record sensor data to internal Flash or external EEPROM and dump logs via USB. The 128 KB Flash stores roughly 64 KB of firmware plus 32-64 KB for data logs depending on usage. The 10-bit ADC with 13 channels samples multi-sensor arrays; the integrated USB enables field engineers to extract logs via USB MSD or vendor class without a serial cable. The 2.0-3.6 V supply supports industrial 24V-bus-derived 3.3 V rails via buck regulators.
推荐
USB Charger / Power Bank Controller
The PIC18LF27J53-I/SP operates as a USB-aware charger or power-bank controller, leveraging its on-chip 3.3 V regulator and USB SIE. The MCU negotiates USB BC1.2 charging modes by toggling D+/D- lines through software, controlling charge current for Li-ion cells. The 13-channel ADC monitors cell voltage, current, and temperature with hardware comparators triggering over-current shutdown. The 128 KB Flash fits state-machine plus USB stack; the 4 KB RAM handles BC1.2 state plus a small display buffer.
推荐
推荐产品汇总
工程参考数据： PIC18LF27J53-I/SP ——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 | PIC18LF27J53-I/SO | PIC18LF26J53-I/SP | PIC18LF27J13-I/SP | PIC18LF26J53-I/ML | PIC18LF46J53-I/SP | PIC18LF26J13-I/SP |
|---|---|---|---|---|---|---|---|
| Package | SPDIP-28 | SOIC-28 | SPDIP-28 - same | SPDIP-28 - same | QFN-28 | SPDIP-28 - same | SPDIP-28 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 128 KB | 128 KB | 64 KB | 128 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 1 KB | 4 KB | 8 KB | 4 KB |
| CPU Speed | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| USB | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
关键差异点
- USB 2.0 integrated SIE eliminates external PHY （对比 PIC18F27J53 (same die, different voltage mode))
- nanoWatt XLP deep-sleep below 1 uA （对比 PIC18LF26J53 (lower-memory sibling))
- 48 MHz CPU at 2.0 V with 12 MIPS throughput （对比 PIC18LF25K50 (K-series, 48 MHz, smaller RAM))
设计说明
The PIC18LF27J53-I/SP operates at 2.0-3.6 V on the 'LF' core. Decouple VDD (pin 27) with a 100 nF ceramic capacitor as close to the pin as possible, plus a 4.7 uF bulk capacitor on the same rail. The on-chip 3.3 V regulator output (VUSB, pin 14) requires a 220 nF external capacitor. If USB is not used, leave VUSB decoupled to keep the regulator stable and minimize quiescent noise on the digital rail.
A common pitfall is treating 'LF' and 'F' variants as interchangeable: PIC18LF27J53 runs only at 2.0-3.6 V while PIC18F27J53 supports both 3.3 V (LF mode via REG) and 5 V (F mode). Using an 'LF' part on a 5 V rail will damage the device. Also verify the CONFIG3L fuse setting: CONFIG3L.REG<1:0> = 11 enables 5 V operation on PIC18F27J53 only. Do not exceed 5.5 V on any pin of the LF variant.
The 28-SPDIP package uses 0.100" (2.54 mm) pin pitch and is through-hole only. For surface-mount designs, use the same-die SOIC-28 (I/SO) or QFN-28 (I/ML) variants on identical pinout logic. For USB designs, route D+ (pin 15) and D- (pin 16) as a 90-ohm differential pair with matching trace lengths and an explicit ground reference plane - non-matched traces cause signal-integrity failures at USB enumeration.
合规信息
RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified - industrial grade only. Halogen-free per Microchip product documentation.
