PIC18F87J93-I/PT - 128KB Flash LCD MCU 8-bit 48MHz | Microchip
MPN: PIC18F87J93-I/PT ✓ فعالPIC18F87J93-I/PT نمای کلی
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and a rich set of peripherals. The PIC18F87J93 belongs to the PIC18J family, which extends the classic PIC18 Harvard architecture with a 16-bit-wide program-memory bus, higher linear addressing, and nanoWatt XLP-style power management. It sits within the broader taxonomy: 8-bit microcontroller -> PIC microcontroller -> PIC18 family -> PIC18J sub-family -> Microchip 8-bit MCU portfolio.
Key features include 128KB (64K x 16) of self-programmable Flash, 4KB RAM, an integrated LCD driver capable of driving up to 192 segments, a 12-bit ADC, multiple USART/SPI/I2C peripherals, nanoWatt power-saving modes for battery operation, and an extended industrial temperature range (-40°C to +85°C) as indicated by the -I suffix. The 80-pin TQFP gives generous I/O and analog-channel count for sensor-rich applications.
The PIC18J core uses a 16-bit instruction path with a two-stage pipeline and a hardware multiply, allowing deterministic interrupt response and efficient C compilation via MPLAB XC8. The integrated LCD charge pump and resistor ladder remove the need for external voltage generation, reducing BOM cost and board area in human-machine-interface (HMI) products.
Typical applications include handheld digital multimeters, thermostats and HVAC controls, home-security keypads, portable medical monitors (glucometers, pulse oximeters), and electricity/water/gas utility meters. The combination of integrated 12-bit ADC, segmented LCD, and low-power nanoWatt modes suits battery-powered metering with on-device display readouts.
When designing with this part, allocate sufficient PCB area for decoupling (100 nF ceramic per VDD pair plus bulk tantalum) and route the LCD segment traces with care to avoid crosstalk. Verify that the segment count of your glass does not exceed the part's COM/SEG matrix in the selected pin configuration.
جایگزین‌های drop-in برای PIC18F87J93-I/PT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC18F87J93-I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در ADC, Package, I/O Pins, Core Architecture, LCD Driver.
PIC18F87J93T-I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F87J72-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F8723-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F8722T-I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F85K90-I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F87J93-I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC18J 8-bit Harvard (16-bit program bus) |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data Memory (RAM) | 4 KB |
| Maximum CPU Frequency | 48 MHz |
| ADC | 12-bit, up to 12 channels |
| LCD Driver | Integrated segmented LCD controller (up to ~192 segments) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| محدوده دمای کاری | -40 C to +85 C (Industrial) |
| I/O Pins | Up to 69 (80-pin device) |
| بسته‌بندی | 80-pin TQFP (PT), 12x12 mm |
| نوع نصب | Surface Mount |
| سطح MSL | 3 |
| Peripherals | USART, SPI, I2C, ECCP, comparators, CTMU |
| Power-Saving Modes | nanoWatt XLP (Sleep, Idle, RTCC) |
| وضعیت RoHS | Compliant |
| Programming/Debug | ICSP, ICD via MPLAB |
پیکربندی پین PIC18F87J93-I/PT
| پین 1 | RA0/AN0 — PORTA bit 0 / ADC analog input 0 |
| پین 2 | RA1/AN1 — PORTA bit 1 / ADC analog input 1 |
| پین 3 | RA2/AN2/VREF- — PORTA bit 2 / ADC analog input 2 / ADC VREF- |
| پین 4 | RA3/AN3/VREF+ — PORTA bit 3 / ADC analog input 3 / ADC VREF+ |
| پین 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پین 6 | RA5/AN4 — PORTA bit 5 / ADC analog input 4 |
| پین 7 | RA6 — PORTA bit 6 |
| پین 8 | RA7 — PORTA bit 7 |
| پین 9 | RE0/RD — PORTE bit 0 / LCD segment drive |
| پین 10 | RE1/WR — PORTE bit 1 / LCD segment drive |
| پین 11 | RE2/CS — PORTE bit 2 / LCD segment drive |
| پین 12 | VDD — Positive supply (2.0-3.6 V) |
| پین 13 | VSS — Ground reference |
| پین 14 | OSC1/CLKI/RA7 — Oscillator input / external clock input |
| پین 15 | OSC2/CLKO/RA6 — Oscillator output |
| پین 16 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator |
| پین 17 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator / CCP2 |
| پین 18 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| پین 19 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پین 20 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پین 21 | RC5/SDO — PORTC bit 5 / SPI data out |
| پین 22 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| پین 23 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| پین 24 | RD0/PSP0/SEG0 — PORTD bit 0 / LCD segment 0 |
| پین 25 | RD1/PSP1/SEG1 — PORTD bit 1 / LCD segment 1 |
| پین 26 | RD2/PSP2/SEG2 — PORTD bit 2 / LCD segment 2 |
| پین 27 | RD3/PSP3/SEG3 — PORTD bit 3 / LCD segment 3 |
| پین 28 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 |
| پین 29 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| پین 30 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| پین 31 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| پین 32 | RB4/KBI0 — PORTB bit 4 / interrupt-on-change |
| پین 33 | RB5/KBI1 — PORTB bit 5 / interrupt-on-change |
| پین 34 | RB6/KBI2/PGC — PORTB bit 6 / ICSP clock |
| پین 35 | RB7/KBI3/PGD — PORTB bit 7 / ICSP data |
| پین 36 | VSS — Ground reference |
| پین 37 | VDD — Positive supply (2.0-3.6 V) |
| پین 38 | RF0 — PORTF bit 0 |
| پین 39 | RF1 — PORTF bit 1 |
| پین 40 | RF2 — PORTF bit 2 |
| پین 41 | RF3 — PORTF bit 3 |
| پین 42 | RF4 — PORTF bit 4 |
| پین 43 | RF5 — PORTF bit 5 |
| پین 44 | RF6 — PORTF bit 6 |
| پین 45 | RF7 — PORTF bit 7 |
| پین 46 | RG0 — PORTG bit 0 |
| پین 47 | RG1 — PORTG bit 1 |
| پین 48 | RG2 — PORTG bit 2 |
| پین 49 | RG3 — PORTG bit 3 |
| پین 50 | RG4 — PORTG bit 4 |
| پین 51 | AVDD — Analog positive supply |
| پین 52 | AVSS — Analog ground |
| پین 53 | RH0 — PORTH bit 0 |
| پین 54 | RH1 — PORTH bit 1 |
| پین 55 | RH2 — PORTH bit 2 |
| پین 56 | RH3 — PORTH bit 3 |
| پین 57 | RH4 — PORTH bit 4 |
| پین 58 | RH5 — PORTH bit 5 |
| پین 59 | RH6 — PORTH bit 6 |
| پین 60 | RH7 — PORTH bit 7 |
| پین 61 | RJ0 — PORTJ bit 0 |
| پین 62 | RJ1 — PORTJ bit 1 |
| پین 63 | RJ2 — PORTJ bit 2 |
| پین 64 | RJ3 — PORTJ bit 3 |
| پین 65 | RJ4 — PORTJ bit 4 |
| پین 66 | RJ5 — PORTJ bit 5 |
| پین 67 | RJ6 — PORTJ bit 6 |
| پین 68 | RJ7 — PORTJ bit 7 |
| پین 69 | RK0 — PORTK bit 0 |
| پین 70 | RK1 — PORTK bit 1 |
| پین 71 | RK2 — PORTK bit 2 |
| پین 72 | RK3 — PORTK bit 3 |
| پین 73 | RK4 — PORTK bit 4 |
| پین 74 | RK5 — PORTK bit 5 |
| پین 75 | RK6 — PORTK bit 6 |
| پین 76 | RK7 — PORTK bit 7 |
| پین 77 | RL0 — PORTL bit 0 / LCD segment |
| پین 78 | RL1 — PORTL bit 1 / LCD segment |
| پین 79 | RL2 — PORTL bit 2 / LCD segment |
| پین 80 | RL3 — PORTL bit 3 / LCD segment |
کاربردهای معمول
PIC18F87J93-I/PT مناسب است برای 6 کاربردs: Handheld Digital Multimeter, Programmable Thermostat / HVAC Controller, Home-Security Keypad / Alarm Panel, Portable Medical Device (Glucometer / Pulse Oximeter), Electric / Water / Gas Utility Meter, Industrial Sensor Hub with Local Display.
Handheld Digital Multimeter
The PIC18F87J93-I/PT is purpose-built for handheld digital multimeters (DMMs) where a low-power 8-bit core must drive a multi-digit 7-segment LCD and sample multiple analog inputs. Its 12-bit ADC with up to 12 channels captures voltage, current, and temperature sense lines, while the integrated LCD driver (up to 192 segments) drives the meter display without an external controller. NanoWatt XLP sleep currents in the microamp range extend battery life on 2xAA alkaline cells. Reference design patterns follow the Microchip AN1295 LCD meter note.
پیشنهادی
Programmable Thermostat / HVAC Controller
For programmable HVAC thermostats and wall-mounted controllers, the PIC18F87J93-I/PT delivers 128 KB Flash for schedule storage, an integrated segmented LCD controller for backlit glass-front displays, and a 12-bit ADC for thermistor/thermocouple temperature sensing. The 2.0-3.6 V supply lets the design run from a 24VAC half-wave-derive rail with a simple LDO. Real-Time Clock and Calendar (RTCC) with external 32.768 kHz crystal maintains time during power loss. The Microchip PIC18F87J93 family datasheet (DS39948A) provides a typical thermostat reference schematic.
پیشنهادی
Home-Security Keypad / Alarm Panel
The PIC18F87J93-I/PT fits home-security alarm panels and keypads where an MCU must drive a multi-line character LCD or large segment display while scanning a 4x4 matrix keypad and supervising multiple zone sensors. Its 128 KB Flash supports encrypted sensor protocols and event logging, while the integrated LCD driver removes a separate display chip from the BOM. USART/SPI/I2C peripherals provide cellular or Wi-Fi module connectivity for cloud reporting. NanoWatt modes keep quiescent current low during armed standby.
پیشنهادی
Portable Medical Device (Glucometer / Pulse Oximeter)
Battery-powered medical devices such as glucometers, pulse oximeters, and digital thermometers benefit from the PIC18F87J93-I/PT's combination of low-power nanoWatt operation, integrated 12-bit ADC for analog sensor readout, and segmented LCD controller for direct glass display driving. The 128 KB Flash accommodates FDA-style calibration data and on-screen UI strings, while 4 KB RAM holds smoothed sensor samples. Operating from 2.0-3.6 V suits a single CR2032 or 2xAAA battery, and the -40 to +85 C industrial range covers portable-use environments.
پیشنهادی
Electric / Water / Gas Utility Meter
Utility metering is the canonical use case for the PIC18F87J93-I/PT: an integrated LCD driver displays consumption digits and status icons on a multi-segment glass, the 12-bit ADC accurately samples current shunts or analog sensor outputs, and 128 KB Flash stores tamper events and tariff tables. NanoWatt XLP modes with RTCC ticking on a 32.768 kHz crystal allow multi-year battery operation. The 80-pin TQFP gives enough GPIO for optical tamper sensors, metrology pulse outputs, and wireless M-Bus or wireless M-Bus / LoRaWAN module interfaces.
پیشنهادی
Industrial Sensor Hub with Local Display
Industrial sensor hubs that aggregate 4-20 mA loops, thermistors, and digital sensor buses benefit from the PIC18F87J93-I/PT's 12-channel 12-bit ADC, multiple USART/SPI/I2C peripherals, and on-chip segmented LCD driver for a local display readout. The 80-pin TQFP exposes enough GPIO for digital I/O expansion and isolated communication ports. Industrial -40 to +85 C operation tolerates factory-floor temperatures, and the extended PIC18J instruction set handles Modbus RTU framing in firmware without external protocol ICs.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18F87J93-I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18F87J93T-I/PT | PIC18F67J93-I/PT | PIC18F87J72-I/PT | PIC18F8723-I/PT | PIC18F8722T-I/PT | PIC18F85K90-I/PT |
|---|---|---|---|---|---|---|---|
| Package | 80-pin TQFP (12x12 mm) | 80-pin TQFP - same | 64-pin TQFP - different | 80-pin TQFP - same | 80-pin TQFP - same | 80-pin TQFP - same | 80-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC18J 8-bit | PIC18J 8-bit - same | PIC18J 8-bit - same | PIC18F87J72 family | PIC18 5V 8-bit | PIC18 5V 8-bit | PIC18 K-series 8-bit |
| AEC-Q100 | Not qualified | Not qualified | Not qualified | Not qualified | Not qualified | Not qualified | Not qualified |
تفاوت‌های کلیدی
- Integrated LCD driver eliminates external charge pump (در مقابلPIC18F8723-I/PT)
- 12-bit ADC vs 10-bit on legacy 5 V parts (در مقابلPIC18F8723-I/PT)
- More pins and GPIO than 64-pin sibling (در مقابلPIC18F67J93-I/PT)
- Modern PIC18 K-series alternative at higher clock (در مقابلPIC18F85K90-I/PT)
یادداشت‌های طراحی
Place a 100 nF ceramic decoupling capacitor on every VDD/AVDD pair within 5 mm of the IC pin, and add a single 10 uF tantalum or ceramic bulk capacitor on the main 3.3 V rail. The PIC18F87J93-I/PT's integrated LCD charge pump draws brief current spikes during bias generation, so low‑ESR bulk decoupling prevents VDD droop that could cause ADC inaccuracy on the same supply rail.
Route LCD segment traces with short, parallel paths to the glass connector and keep them away from high-frequency switching lines (USART, SPI clock) and the on-board oscillator traces. The 80-pin TQFP (12x12 mm) gives 0.5 mm pitch - use 0.15 mm/0.20 mm trace/spacing and a 4-layer stackup with a continuous ground plane under the MCU to minimize noise coupling into the analog ADC inputs (AN0-AN11).
Do not assume the 80-pin TQFP pinout is identical across the PIC18F87J93 family and PIC18F8723/PIC18F8722 legacy 5 V families - they share the package but differ in pin function (LCD segments vs GPIO) and supply-voltage tolerance. Always cross-check the datasheet pin tables before migrating firmware between PIC18F87J93-I/PT and PIC18F8723-I/PT, since 5 V on PIC18F87J93 inputs will damage the part. Source: PIC18F87J93 family datasheet (DS39948A).
When driving long off-board sensor cables from PIC18F87J93-I/PT ADC pins, add a 100 ohm series resistor and a 10 nF ceramic to ground at the pin to form a low-pass filter that suppresses RF interference. The 12-bit ADC has limited analog bandwidth; oversampling or averaging 16x in firmware extends effective resolution to ~14 bits for slow DC measurements like thermistor sensing in thermostats and utility meters.
اطلاعات انطباق
RoHS compliant per Microchip product page. Industrial temperature grade (-I suffix) -40 to +85 C; not AEC-Q100 qualified for automotive. Pb-free reflow profile per JEDEC J-STD-020 MSL3.
