PIC18LF27J13T-I/SS - 128KB Flash 8-bit MCU 48MHz SSOP-28 | Microchip
MPN: PIC18LF27J13T-I/SS ✓ Hoạt độngPIC18LF27J13T-I/SS Tóm tắt
An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, optimized for embedded control tasks such as sensor interfacing, motor control, and human-machine interfaces. Within the broader hierarchy, microcontrollers sit below microprocessors and belong to the power management and embedded systems domain. The PIC18 family uses a modified Harvard architecture with separate program and data buses, and the J-series specifically adds peripherals such as a 12-bit ADC, comparators, and enhanced PWM/capture modules while keeping the same PIC18 instruction set.
Key features include a 10-channel 12-bit ADC with automated Channel Scan mode, dual analog comparators, four 16-bit timers, two Capture/Compare/PWM (CCP) modules plus one Enhanced CCP (ECCP), two USART modules with LIN support, two SPI/I2C-compatible MSSP peripherals, and an integrated hardware RTCC. The /LF supply range of 2.0 V to 3.6 V makes the part drop-in compatible with single-cell Li-ion or two-cell alkaline battery rails. nanoWatt XLP technology delivers sleep currents in the nanoamp range, enabling years of operation on a single coin cell.
The CPU executes a 16-bit instruction word over an 8-bit data bus, with a hardware multiplier and C-friendly architecture that supports pointer manipulation and a software stack. An integrated 31 kHz internal oscillator and a 48 MHz internal RC oscillator eliminate the need for an external crystal in cost-sensitive designs, while a PLL provides 48 MHz from the 4 MHz INTOSC source.
Typical applications include portable medical monitoring devices, IoT sensor nodes, USB-to-UART bridges (using the MSSP/USART peripherals), low-power wireless HMI controls, and industrial sensor transmitters. The wide memory and peripheral set also suits appliance controllers and LED driver front-ends.
When designing, verify the maximum I/O current budget per pin (typically 25 mA source/sink) and per port (typically 200 mA), and add adequate decoupling (0.1 uF + 10 uF) close to the VDD/VSS pairs. For low-power designs, follow Microchip TB1200 application note guidelines and use the deep-sleep watchdog and RTCC for wake-up events instead of polling.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the PIC18LF27J13T-I/SS that are not always present in the manufacturer datasheet summary.
Bộ thay thế dễ dàng lắp đặt cho PIC18LF27J13T-I/SS — 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 PIC18LF27J13T-I/SS (cùng hình factor và footprint) — khác nhau ở ADC, Package, Operating Temperature, Core Architecture, Timers.
PIC18LF27J13-I/SS
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Xem tài liệu →PIC18F27J13-I/SS
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Xem tài liệu →PIC18F27J13T-I/SS
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Xem tài liệu →PIC18LF26K83-I/SS
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Xem tài liệu →PIC18LF26K22-I/SS
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Xem tài liệu →PIC18LF27J13T-I/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit, modified Harvard |
| Series | PIC18 J-series (PIC18LF27J13) |
| Program Memory (Flash) | 128 KB (64K x 16 words) |
| Data RAM | 4 KB |
| CPU Speed (Max) | 48 MHz / 12 MIPS |
| Operating Voltage (Vdd) | 2.0 V to 3.6 V |
| ADC | 10-channel, 12-bit |
| Timers | 4 x 16-bit |
| CCP / ECCP | 2 x CCP + 1 x ECCP |
| Communication | 2 x USART (LIN), 2 x MSSP (SPI/I2C) |
| Comparators | 2 analog comparators |
| RTCC | Hardware Real-Time Clock & Calendar |
| Internal Oscillator | 31 kHz + 8 MHz / 48 MHz with PLL |
| Hộp | SSOP-28 (5.30 mm / 0.209 in body width) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, /I) |
| Low-Power Tech | nanoWatt XLP |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18LF27J13T-I/SS
| Chân 1 | RA2/AN2/CVREF — Digital I/O / Analog input / Comparator reference |
| Chân 2 | RA3/AN3/VREF+ — Digital I/O / Analog input / ADC VREF+ |
| Chân 3 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Chân 4 | RA5/AN4/C1INA — Digital I/O / Analog input / Comparator 1 inverting input A |
| Chân 5 | RA6 — Digital I/O |
| Chân 6 | RA7 — Digital I/O |
| Chân 7 | Vss — Ground reference |
| Chân 8 | VDD — Positive supply (2.0 V to 3.6 V) |
| Chân 9 | OSC1/CLKI/RA1 — Crystal / external clock input |
| Chân 10 | OSC2/CLKO/RA0 — Crystal / clock output |
| Chân 11 | RC0/SOSCO — Digital I/O / Secondary oscillator output |
| Chân 12 | RC1/SOSCI — Digital I/O / Secondary oscillator input |
| Chân 13 | RC2/CCP1 — Digital I/O / CCP1 I/O |
| Chân 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Chân 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Chân 16 | RC5/SDO — Digital I/O / SPI data out |
| Chân 17 | RC6/TX/CK — Digital I/O / USART TX / clock |
| Chân 18 | RC7/RX/DT — Digital I/O / USART RX / data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply (2.0 V to 3.6 V) |
| Chân 21 | RB0/AN12/INT0 — Digital I/O / Analog input / External interrupt 0 |
| Chân 22 | RB1/AN10 — Digital I/O / Analog input |
| Chân 23 | RB2/AN8 — Digital I/O / Analog input |
| Chân 24 | RB3/AN9/CCP2 — Digital I/O / Analog input / CCP2 I/O |
| Chân 25 | RB4/AN11 — Digital I/O / Analog input |
| Chân 26 | RB5/AN13 — Digital I/O / Analog input |
| Chân 27 | RB6/PGC — Digital I/O / ICSP clock |
| Chân 28 | RB7/PGD — Digital I/O / ICSP data |
Ứng dụng tiêu biểu
PIC18LF27J13T-I/SS phù hợp cho 6 Áp dụngs: Portable Medical Sensor Device, IoT Sensor Node with UART/SPI Bridge, Industrial Sensor Transmitter (4-20 mA / HART-lite), Battery-Powered HMI Controller, LED Lighting Controller with DMX/RDM, USB-to-UART Bridge Firmware Replacement.
Portable Medical Sensor Device
The PIC18LF27J13T-I/SS fits battery-powered medical peripherals such as pulse-oximeter probes, glucose-meter front-ends, and handheld spirometers. Its 2.0-3.6 V VDD range accepts a single Li-ion cell directly, while the nanoWatt XLP sleep current below 100 nA keeps standby drain low for weeks of shelf life. The 10-channel 12-bit ADC captures photodiode, thermistor, and electrochemical sensor signals at up to 200 ksps; the integrated RTCC timestamps measurements without a separate RTC IC. With 128 KB of Flash, the firmware fits a USB-CDC stack, a graphical LCD driver, and measurement history buffers, while the 4 KB RAM handles Bluetooth HCI command queues via USART. Companion parts include the MCP6002 op-amp for signal conditioning and the MCP1700 LDO for rail regulation.
Được đề xuất
IoT Sensor Node with UART/SPI Bridge
For battery-powered IoT sensor nodes, the PIC18LF27J13T-I/SS acts as the application host that wakes on the hardware RTCC, reads sensors over I2C/SPI via the two MSSP peripherals, and forwards aggregated data over UART to a Wi-Fi/BLE module. The 12 MIPS throughput is sufficient for modest edge-processing tasks such as moving-average filtering, threshold detection, and JSON serialization. The 48 MHz core supports up to 8 MHz SPI clock, allowing direct interfacing to SPI-based accelerometers, gyros, and environmental sensors without wait-states. Low-power nanoWatt XLP idle (1 uA typical with RTCC + WDT) enables multi-year coin-cell operation in duty-cycled deployments. Companion parts include the ATECC608B secure element for authentication and the MCP9808 temperature sensor.
Được đề xuất
Industrial Sensor Transmitter (4-20 mA / HART-lite)
In industrial 4-20 mA loop-powered transmitters, the PIC18LF27J13T-I/SS digitizes sensor signals from a pressure transducer, RTD, or load cell through the 12-bit ADC, then drives the loop via the ECCP PWM and a current-setting op-amp circuit. The /LF low-voltage variant allows a switching pre-regulator topology that operates from a loop voltage down to 8 V. The 4 KB RAM supports moving-window averaging, linearization tables, and HART-lite protocol state machines. The -40 C to +85 C industrial temperature grade covers outdoor and process-plant environments without derating. The two USART modules enable simultaneous HART modulation on one channel and diagnostic UART on the other. Companion parts include the XTR105 loop-current IC and the REF200 precision current reference.
Được đề xuất
Battery-Powered HMI Controller
The PIC18LF27J13T-I/SS drives small graphical or segment LCD HMI panels in handheld remotes, thermostat keypads, and appliance controllers. The 48 MHz core provides enough MIPS to refresh 4-commom duty multiplexed segment LCDs with smooth animations, while the ECCP module generates LCD bias waveforms via PWM plus external charge pumps. 128 KB Flash supports multi-language UI strings and bitmap icons, and the 4 KB RAM stores button debounce state, menu stack, and communication buffers. The /LF voltage range matches 2x AA / 2x AAA / coin-cell rails. The internal 31 kHz oscillator provides an accurate timebase for sleep-mode wake-up scheduling without external crystal cost. Companion parts include the MCP1700 LDO and a small SPI Flash for asset data logging.
Được đề xuất
LED Lighting Controller with DMX/RDM
For architectural LED lighting strips, the PIC18LF27J13T-I/SS generates up to 24 channels of PWM LED dimming through its CCP/ECCP and Timer-based PWM channels, while the USART handles DMX512 / RDM communication at 250 kbaud. The 12 MIPS throughput manages up to 30 Hz refresh of 24 PWM channels with gamma-correction lookup in RAM. The /LF voltage range suits 3.3 V system rails common in LED drivers. nanoWatt XLP sleep modes support a power-down standby current under 1 uA, allowing the lighting fixture to comply with energy-conservation standards. The 128 KB Flash holds DMX personality profiles and show-recording scripts; the 4 KB RAM keeps working frame buffers. Companion parts include the TLC5947 LED driver and an RS-485 transceiver for DMX physical layer.
Được đề xuất
USB-to-UART Bridge Firmware Replacement
Although the PIC18LF27J13T-I/SS lacks native USB, its two USART peripherals and 48 MHz CPU make it a capable host MCU that talks to external USB-to-UART bridges such as the MCP2200 or MCP2221. The 128 KB Flash stores the bridge-application firmware (proprietary protocols, factory test firmware, or bootloader), while the 12 MIPS CPU can implement a 921.6 kbaud UART link with hardware flow control without loss-of-data. The low-power sleep modes keep idle current low when the bridge is disconnected. This is a common architecture for industrial gateways and for legacy RS-232 replacement modules. Companion parts include the MCP2221 USB-to-UART/I2C bridge IC and the MCP1700 LDO.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18LF27J13T-I/SS — 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 | PIC18LF27J13-I/SS | PIC18F27J13-I/SS | PIC18F27J13T-I/SS | PIC18LF26K83-I/SS | PIC18LF26K22-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) | SSOP-28 (same) |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB (2x) | 64 KB (0.5x) |
| RAM | 4 KB | 4 KB | 4 KB | 4 KB | 8 KB (2x) | 3.8 KB (~equal) |
| Max CPU Speed | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 64 MHz / 16 MIPS | 64 MHz / 16 MIPS |
| Operating Voltage (VDD) | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Packaging Format | Tape & Reel | Tube | Tube | Tape & Reel | Tube | Tube |
| ADC Channels / Resolution | 10 ch / 12-bit | 10 ch / 12-bit | 10 ch / 12-bit | 10 ch / 12-bit | 11 ch / 12-bit | 17 ch / 10-bit |
| Low-Power Tech | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP |
Bảo phân biệt quan trọng
- Lowest-voltage part in 128 KB Flash PIC18 J-series family (vsPIC18F27J13-I/SS)
- Tape & Reel packaging format optimized for high-volume SMT assembly (vsPIC18LF27J13-I/SS)
- Highest MIPS-per-mA in the PIC18 J-series at 48 MHz (vsPIC18LF26K22-I/SS)
Ghi chú thiết kế
Estimated: at 48 MHz active current is ~14 mA; at 4 MHz it falls to ~1.5 mA. For battery operation, switch the CPU speed via OSCTUNE/PLL before entering Sleep. Decouple each VDD/VSS pair with 0.1 uF ceramic close to the pin (<2 mm trace). Add a 10 uF bulk capacitor on the main VDD rail. Follow Microchip TB1200 "nanoWatt XLP" application note for sleep-current minimization - typical deep-sleep current is below 100 nA with RTCC active.
Route the ICSP pins (RB6/PGC, RB7/PGD) with no series resistors or capacitors in line - they must reach the programming header directly. Place the crystal or oscillator traces within 12 mm of OSC1/OSC2, keep them short, and guard with a ground plane. For SSOP-28, provide a continuous ground pour beneath the part and stitch vias along the perimeter for thermal dissipation.
Do not exceed 3.6 V VDD on the /LF variant - the silicon will latch-up and may be damaged. The MCLR pin must have a 10 kohm pull-up to VDD for normal operation; if left floating, the part will not run. ADC channels AN0-AN4 share their pins with comparator inputs - configure ANSEL before reading. Avoid driving a high-current load (>25 mA) directly on an I/O pin; buffer with a MOSFET driver such as TC4420.
Estimated: SSOP-28 theta_JA is approximately 95 C/W on a 1 oz 2-layer board with 100 mm^2 copper pour. At 14 mA active and 3.3 V, dissipation is 46 mW, so junction rise above ambient is roughly 4.4 C - well within limits. For higher temperature environments (>50 C ambient), provide additional copper area or forced airflow to maintain margin.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade -40 C to +85 C. Not AEC-Q100 qualified; for automotive use consider PIC18F27J13T-I/SS or PIC18F46J50-I/PT with explicit automotive part numbers.
