PIC18F66J93T-I/PT - 8-bit LCD MCU, 64KB Flash, 12-bit ADC | Microchip
MPN: PIC18F66J93T-I/PT ✓ Hoạt độngPIC18F66J93T-I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripherals. The PIC18 family uses an enhanced 8-bit RISC architecture with hardware multiply, a 16-bit instruction word, and a vectored interrupt controller. Within the PIC18 hierarchy, the J93 sub-family adds integrated segment-LCD drive, nanoWatt XLP power management, and a 12-bit ADC, positioning it between general-purpose PIC18F and PIC24/dsPIC families.
Key features include 64KB (32K x 16) self-programmable Flash, 3923 bytes SRAM, 51 digital I/O, an internal oscillator, nanoWatt XLP low-power modes, an integrated LCD segment driver, and a 12-bit ADC with 12 input channels. The device operates from 2.0V to 3.6V, supporting battery-powered and portable designs. The 64-pin TQFP (10x10 mm) package offers the most pin-rich option in the family for designs needing extensive GPIO and segmented LCD drive.
The PIC18F66J93 architecture uses a 16-bit-wide instruction path, 31-level hardware stack, and a priority-interrupt controller, with peripheral features including EUSART, I2C, SPI, 10-bit PWM, comparators, and a real-time clock counter. Integrated nanoWatt XLP support enables sleep currents as low as the low-nA range, extending battery life in metering applications.
Typical applications include handheld meters, thermostats, home security panels, portable medical devices, utility metering, and consumer appliances with segmented LCD user interfaces. Design considerations include providing adequate decoupling near VDD/AVDD pins and following Microchip's recommended layout for LCD bias generation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F66J93T-I/PT — 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 PIC18F66J93T-I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, LCD Driver, Operating Temperature, Core.
PIC18F66J93-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65J94-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66J90T-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F66J50T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F67J93-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F86J93-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F66J93T-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 3923 bytes |
| Maximum CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Number of I/O Pins | 51 |
| ADC | 12-bit, 12 channels |
| LCD Driver | Integrated segment LCD driver |
| Communication Interfaces | EUSART, I2C, SPI |
| Hộp | 64-pin TQFP (PT), 10x10 mm |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, 'I') |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Oscillator | Internal |
| Power-Saving Modes | nanoWatt XLP |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F66J93T-I/PT
| Chân 1 | RC2 — Digital I/O / PWM output |
| Chân 2 | RC3 — Digital I/O / SPI clock |
| Chân 3 | RC4 — Digital I/O |
| Chân 4 | RC5 — Digital I/O |
| Chân 5 | VSS — Ground |
| Chân 6 | RC6 — Digital I/O / EUSART TX |
| Chân 7 | RC7 — Digital I/O / EUSART RX |
| Chân 8 | RD0 — Digital I/O |
| Chân 9 | RD1 — Digital I/O |
| Chân 10 | RD2 — Digital I/O |
| Chân 11 | RD3 — Digital I/O |
| Chân 12 | RD4 — Digital I/O |
| Chân 13 | RD5 — Digital I/O |
| Chân 14 | RD6 — Digital I/O |
| Chân 15 | RD7 — Digital I/O |
| Chân 16 | VSS — Ground |
| Chân 17 | VDD — Positive supply voltage |
| Chân 18 | RE0 — Digital I/O / LCD segment |
| Chân 19 | RE1 — Digital I/O / LCD segment |
| Chân 20 | RE2 — Digital I/O / LCD segment |
| Chân 21 | RE3 — Digital I/O |
| Chân 22 | RE4 — Digital I/O |
| Chân 23 | RE5 — Digital I/O |
| Chân 24 | RE6 — Digital I/O |
| Chân 25 | RE7 — Digital I/O |
| Chân 26 | AVDD — Analog positive supply |
| Chân 27 | AVSS — Analog ground |
| Chân 28 | RA0 — Digital I/O / ADC input |
| Chân 29 | RA1 — Digital I/O / ADC input |
| Chân 30 | RA2 — Digital I/O / ADC input |
| Chân 31 | RA3 — Digital I/O / ADC reference |
| Chân 32 | RA4 — Digital I/O |
| Chân 33 | RA5 — Digital I/O / ADC input |
| Chân 34 | VDD — Positive supply voltage |
| Chân 35 | VSS — Ground |
| Chân 36 | RB0 — Digital I/O / interrupt |
| Chân 37 | RB1 — Digital I/O / interrupt |
| Chân 38 | RB2 — Digital I/O / interrupt |
| Chân 39 | RB3 — Digital I/O / interrupt |
| Chân 40 | RB4 — Digital I/O / interrupt |
| Chân 41 | RB5 — Digital I/O / interrupt |
| Chân 42 | RB6 — Digital I/O / interrupt / ICSPCLK |
| Chân 43 | RB7 — Digital I/O / interrupt / ICSPDAT |
| Chân 44 | RF0 — Digital I/O / LCD segment |
| Chân 45 | RF1 — Digital I/O / LCD segment |
| Chân 46 | RF2 — Digital I/O / LCD segment |
| Chân 47 | RF3 — Digital I/O / LCD segment |
| Chân 48 | RF4 — Digital I/O / LCD segment |
| Chân 49 | RF5 — Digital I/O / LCD segment |
| Chân 50 | RF6 — Digital I/O / LCD segment |
| Chân 51 | RF7 — Digital I/O / LCD segment |
| Chân 52 | RG0 — Digital I/O / LCD segment |
| Chân 53 | RG1 — Digital I/O / LCD segment |
| Chân 54 | RG2 — Digital I/O / LCD segment |
| Chân 55 | RG3 — Digital I/O / LCD segment |
| Chân 56 | RG4 — Digital I/O / LCD segment |
| Chân 57 | MCLR — Master clear reset (active-low) |
| Chân 58 | OSC1 — Oscillator input |
| Chân 59 | OSC2 — Oscillator output |
| Chân 60 | RA6 — Digital I/O / oscillator |
| Chân 61 | RA7 — Digital I/O / oscillator |
| Chân 62 | VDD — Positive supply voltage |
| Chân 63 | VSS — Ground |
| Chân 64 | RC0 — Digital I/O / LCD segment |
Ứng dụng tiêu biểu
PIC18F66J93T-I/PT phù hợp cho 7 Áp dụngs: Handheld Digital Multimeter, Programmable Thermostat, Home Security Control Panel, Portable Medical Device (Blood Pressure Monitor), Utility Metering (Electricity/Water/Gas), Industrial Process Indicator, Consumer Appliance User Interface.
Handheld Digital Multimeter
The PIC18F66J93T-I/PT is well suited to handheld digital multimeters thanks to its integrated 12-bit ADC with 12 input channels and segment LCD driver. The 12-bit resolution provides 4096 counts, sufficient for basic 4000-count DMM display accuracy, while the segment LCD directly drives numeric readouts without an external controller. NanoWatt XLP modes drop sleep current into the nA range, extending battery life in standby. Designers place the MCU between the analog signal-conditioning front end and the LCD, using internal op-amps (if configured) or external amplifiers for input scaling. The 64KB Flash accommodates calibration tables, auto-ranging state machines, and USB serial bridges for data logging.
Được đề xuất
Programmable Thermostat
The PIC18F66J93T-I/PT fits programmable thermostat designs through its combination of 12-bit ADC for temperature sensing, segment LCD driver for the display, and nanoWatt XLP power management for 24/7 mains-backed or battery operation. The 12 ADC channels accept multiple NTC thermistor inputs (room, floor, outdoor) plus humidity sensor outputs. Real-time-clock counter tracks schedule programs. EUSART/I2C/SPI interfaces connect to Wi-Fi modules (e.g., ESP32 co-processor) for smart-thermostat variants. The wide 2.0-3.6V VDD range permits direct 2x AA battery or 24VAC-derived 3.3V supply rails. Internal oscillator eliminates external crystal, reducing BOM cost.
Được đề xuất
Home Security Control Panel
The PIC18F66J93T-I/PT serves home security control panels by combining 51 digital I/O for sensor loops, 12-bit ADC for battery and line-voltage monitoring, and segment LCD for the keypad/display interface. The 64KB Flash stores event logs, user codes, and communication protocol stacks (Contact ID, SIA). EUSART interfaces to GSM/PSTN dialers; SPI connects to Ethernet or Wi-Fi modules. nanoWatt XLP modes keep quiescent draw minimal during AC-mains power-loss standby operation from backup batteries. The 64-pin TQFP footprint provides sufficient GPIO for multi-zone alarm panels with both wired sensors and wireless receiver interfaces.
Được đề xuất
Portable Medical Device (Blood Pressure Monitor)
The PIC18F66J93T-I/PT supports portable medical devices such as blood pressure monitors, glucose meters, and pulse oximeters through its 12-bit ADC for sensor signal acquisition, segment LCD for direct numeric display, and nanoWatt XLP modes for battery longevity. The 12 ADC channels handle cuff pressure transducer, motor current sense, battery voltage, and user-button matrix. SRAM (3923 bytes) buffers measurement samples and trend history. SPI/I2C interfaces connect to optional Bluetooth modules for smartphone connectivity. The industrial -40C to +85C temperature range and 2.0-3.6V VDD permit operation from 2x AAA alkaline cells across a wide range of clinical and home environments.
Được đề xuất
Utility Metering (Electricity/Water/Gas)
The PIC18F66J93T-I/PT is well matched to utility metering endpoints with its integrated segment LCD, 12-bit ADC for measurement front ends, and nanoWatt XLP modes that achieve sub-uA sleep currents critical for 10+ year battery life on water and gas meters. The 12 ADC channels sample current shunts, voltage dividers, or pulse-output flow sensors. EUSART and I2C connect to wireless MBus, LoRa, or cellular modules for AMI/AMR backhaul. Internal EEPROM emulation in Flash stores tamper logs, calibration constants, and monthly consumption history. The wide operating temperature range supports outdoor meter installations. Many Microchip reference designs target this family for residential smart meters.
Được đề xuất
Industrial Process Indicator
The PIC18F66J93T-I/PT works in industrial process indicators as a 4-20 mA loop-powered display or local HMI for temperature, pressure, level, or flow sensors. The 12-bit ADC digitizes 4-20 mA inputs via burden resistor; segment LCD shows engineering units. EUSART or SPI interfaces to external Modbus RTU transceivers. The wide 2.0-3.6V supply permits operation directly from 4-20 mA loop with proper shunt regulation. nanoWatt XLP reduces power budget to fit within the 3.6 mA loop current limit. 51 digital I/O handle alarm relays, pushbutton inputs, and backlight control. The -40C to +85C industrial temperature range handles factory floor environments.
Được đề xuất
Consumer Appliance User Interface
The PIC18F66J93T-I/PT fits consumer appliance user interfaces such as washing machines, ovens, and rice cookers with segment LCD displays and pushbutton controls. The segment LCD driver replaces traditional 7-segment discrete LED modules, reducing BOM cost and PCB area. 12 ADC channels monitor NTC temperature probes, water-level sensors, and motor current. The 64KB Flash supports multi-language UI strings, fuzzy-logic cooking profiles, and Inverter/motor-control state machines. EUSART interfaces to motor-driver boards or inverter modules. The 2.0-3.6V supply accepts 3.3V regulated rails from AC-DC converters.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F66J93T-I/PT — 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 | PIC18F66J93-I/PT | PIC18F65J94-I/PT | PIC18F66J90T-I/PT | PIC18F66J50T-I/PT | PIC18F67J93-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same |
| Core | 8-bit PIC18 (RISC) | 8-bit PIC18 (RISC) | 8-bit PIC18 (RISC) | 8-bit PIC18 (RISC) | 8-bit PIC18 (RISC) | 8-bit PIC18 (RISC) |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 10-bit | 12-bit |
| ADC Channels | 12 | 12 | 12 | 12 | 8 | 12 |
| LCD Driver | Yes (integrated segment LCD) | Yes | Yes | Yes | Yes | Yes |
| Max 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) |
| Operating 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 |
Bảo phân biệt quan trọng
- Integrated segment LCD driver (vsPIC18F66J50T-I/PT)
- Industrial temperature grade (vsPIC18F6620T-I/PT)
- 64-pin TQFP with 51 I/O (vsPIC18F65K90T-I/MR (QFN-64))
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair, with a bulk 10 uF tantalum or ceramic capacitor near the package. For battery-powered metering designs, use nanoWatt XLP sleep modes and switch the ADC off between conversions to minimize quiescent current. The internal voltage regulator requires a low-ESR capacitor on its dedicated pin per the datasheet.
Route the analog AVSS trace directly to a clean ground point at the system star-ground; avoid sharing AVSS return current with noisy digital ground paths. Place the analog signal traces away from PWM outputs and switching nodes. The 64-pin TQFP allows a generous ground plane beneath the device, which improves ADC SNR by several dB per Microchip application notes.
Ensure the MCLR pin has a 10 kohm pull-up to VDD; floating MCLR can cause unpredictable resets. When using the internal oscillator, configure OSCTUNE and OSCCON correctly to avoid drift at temperature extremes. The ICD/ICSP pins (RB6/RB7) must be left free in production designs unless in-circuit debugging is required, with appropriate isolation resistors to prevent debug-circuit interference.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade only; not AEC-Q100 qualified for automotive use. Microchip recommends PIC18F66J93T-I/PT for handheld meters, thermostats, home security, and portable medical devices per the official product family description.
