PIC18F65K90T-I/MR - 8-bit PIC MCU, 32KB Flash, LCD Driver | Microchip
MPN: PIC18F65K90T-I/MR ✓ Hoạt độngPIC18F65K90T-I/MR Tóm tắt
An 8-bit microcontroller (MCU) is a compact programmable processor that combines a CPU, memory, and peripherals on a single silicon die. The PIC18F family from Microchip Technology is built on a RISC architecture with hardware multiplier and Harvard bus structure, optimized for low-power embedded control. Within the broader taxonomy, this places PIC18F65K90T-I/MR as: microcontroller -> 8-bit MCU -> PIC18F family -> nanoWatt XLP series -> LCD-driver integrated MCU -> embedded semiconductor.
Key features include 32KB Flash program memory, 2KB SRAM, 1KB EEPROM, 54 I/O pins, an integrated LCD driver supporting up to 384 segments, and nanoWatt XLP (eXtra Low Power) technology for battery applications. The device also integrates a Charge Time Measurement Unit (CTMU) supporting 24 channels of capacitive touch sensing in 80-pin variants, plus 12-bit ADC, mTouch sensing, and a wide operating temperature range of -40C to +85C.
The PIC18F65K90T-I/MR utilizes Microchip's nanoWatt XLP technology to achieve ultra-low sleep currents (typically under 100 nA), making it well suited to battery-powered applications that must remain dormant for long intervals while waking on interrupt. The integrated LCD driver eliminates the need for an external segment driver IC, reducing BOM cost and PCB area in user-interface designs.
Typical applications include battery-powered metering with LCD displays (electricity/gas/water meters), portable medical monitors, industrial control panels with segment LCDs, automotive dashboards, and capacitive-touch user interfaces. The wide memory and I/O combination also supports home appliances and consumer electronics with simple graphical displays.
When designing with this part, note that the 64-pin QFN EP package requires thermal vias under the exposed pad to dissipate heat and provide mechanical solder joint reliability. The ICD/ICSP programming pins (PGC/PGD) must be routed to accessible test points to enable in-circuit debugging.
This page synthesizes distributor pricing across Mouser/DigiKey/JLCPCB, drop-in alternatives in the same 64-pin QFN EP footprint, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC18F65K90T-I/MR — 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 PIC18F65K90T-I/MR (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, LCD Driver, Program Memory (Flash).
PIC18F65K90-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65K90-E/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65K22-E/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F65K80T-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F65K40-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F65K90T-I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC |
| Family | PIC18F |
| Program Memory (Flash) | 32 KB |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Maximum Clock Speed | 40 MHz |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 54 |
| LCD Driver | Integrated, up to 384 segments (package-dependent) |
| ADC | 12-bit |
| Capacitive Touch Channels | Up to 24 (via CTMU, family-level) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 64-pin QFN EP (MR), 9x9 mm |
| Kiểu lắp đặt | Surface Mount |
| Power Technology | nanoWatt XLP (eXtra Low Power) |
| Charge Time Measurement Unit (CTMU) | Yes |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F65K90T-I/MR
| Chân 1 | RH0/SEG47 — Port H bit 0 / LCD segment 47 |
| Chân 2 | RH1/SEG46 — Port H bit 1 / LCD segment 46 |
| Chân 3 | RH2/SEG45 — Port H bit 2 / LCD segment 45 |
| Chân 4 | RH3/SEG44 — Port H bit 3 / LCD segment 44 |
| Chân 5 | RH4/SEG43 — Port H bit 4 / LCD segment 43 |
| Chân 6 | RH5/SEG42 — Port H bit 5 / LCD segment 42 |
| Chân 7 | RH6/SEG41 — Port H bit 6 / LCD segment 41 |
| Chân 8 | RH7/SEG40 — Port H bit 7 / LCD segment 40 |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply voltage |
| Chân 11 | AVDD — Analog supply voltage |
| Chân 12 | AVSS — Analog ground |
| Chân 13 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 14 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 15 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / VREF- |
| Chân 16 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / VREF+ |
| Chân 17 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Chân 18 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Chân 19 | RA6/OSC2 — Port A bit 6 / Oscillator output |
| Chân 20 | RA7/OSC1/CLKIN — Port A bit 7 / Oscillator input / Clock in |
| Chân 21 | VSS — Ground reference |
| Chân 22 | VDD — Positive supply voltage |
| Chân 23 | RB0/INT0/FLT0 — Port B bit 0 / External interrupt 0 / PWM fault |
| Chân 24 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Chân 25 | RB2/INT2 — Port B bit 2 / External interrupt 2 |
| Chân 26 | RB3/INT3 — Port B bit 3 / External interrupt 3 |
| Chân 27 | RB4 — Port B bit 4 |
| Chân 28 | RB5 — Port B bit 5 |
| Chân 29 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 30 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | RC0 — Port C bit 0 |
| Chân 34 | RC1 — Port C bit 1 |
| Chân 35 | RC2 — Port C bit 2 |
| Chân 36 | RC3 — Port C bit 3 |
| Chân 37 | RC4 — Port C bit 4 |
| Chân 38 | RC5 — Port C bit 5 |
| Chân 39 | RC6 — Port C bit 6 |
| Chân 40 | RC7 — Port C bit 7 |
| Chân 41 | VSS — Ground reference |
| Chân 42 | VDD — Positive supply voltage |
| Chân 43 | RD0 — Port D bit 0 |
| Chân 44 | RD1 — Port D bit 1 |
| Chân 45 | RD2 — Port D bit 2 |
| Chân 46 | RD3 — Port D bit 3 |
| Chân 47 | RD4 — Port D bit 4 |
| Chân 48 | RD5 — Port D bit 5 |
| Chân 49 | RD6 — Port D bit 6 |
| Chân 50 | RD7 — Port D bit 7 |
| Chân 51 | VSS — Ground reference |
| Chân 52 | VDD — Positive supply voltage |
| Chân 53 | RE0 — Port E bit 0 |
| Chân 54 | RE1 — Port E bit 1 |
| Chân 55 | RE2 — Port E bit 2 |
| Chân 56 | RE3 — Port E bit 3 |
| Chân 57 | RE4 — Port E bit 4 |
| Chân 58 | RE5 — Port E bit 5 |
| Chân 59 | RE6 — Port E bit 6 |
| Chân 60 | RE7 — Port E bit 7 |
| Chân 61 | VSS — Ground reference |
| Chân 62 | VDD — Positive supply voltage |
| Chân 63 | MCLR/RE3 — Master clear reset / Port E bit 3 alt |
| Chân 64 | EP — Exposed thermal pad (connect to VSS) |
Ứng dụng tiêu biểu
PIC18F65K90T-I/MR phù hợp cho 7 Áp dụngs: Battery-Powered Electricity Meter with LCD, Industrial Control Panel with Segment LCD, Portable Medical Monitor, Capacitive Touch User Interface, Home Appliance with Segment LCD Display, Automotive Dashboard Cluster (Non-Safety), Water/Gas Meter with LCD and Touch Wake.
Battery-Powered Electricity Meter with LCD
The PIC18F65K90T-I/MR fits electricity meter designs because its integrated LCD driver supports up to 384 segments without an external segment driver IC, reducing BOM cost by $0.50-1.00 per meter. With nanoWatt XLP technology delivering sub-100nA sleep current, a 3.6V lithium battery can power the meter for 10+ years in metrology-only sleep mode. The 32KB Flash fits IEC 62056 DLMS/COSEM protocol stacks with room for tariff tables and tamper detection firmware. The CTMU enables capacitive touch buttons replacing mechanical meter buttons, improving sealing and reliability.
Được đề xuất
Industrial Control Panel with Segment LCD
The PIC18F65K90T-I/MR drives industrial HMI panels because its 384-segment LCD driver eliminates separate HT1621-style driver chips, simplifying the BOM. The 12-bit ADC and 54 I/O pins handle multiple sensor inputs (temperature, pressure, flow) plus relay outputs within a single chip. Operating from 4.2V-5.5V with -40C to +85C industrial temperature range, it survives factory floor environments. The PIC18F's 16 MIPS instruction throughput executes PID loops within 1 ms update rates needed for process control.
Được đề xuất
Portable Medical Monitor
The PIC18F65K90T-I/MR serves portable medical devices because its nanoWatt XLP sleep current under 100nA extends battery life on coin-cell or Li-coin power sources. The 32KB Flash fits simple vital-signs algorithms (pulse-oximetry front-end, temperature trending) while leaving room for IEC 62304-compliant firmware. The 12-bit ADC pairs with photodiode front-ends for SpO2 measurement. CTMU capacitive touch enables sealed-button enclosures meeting IP54 ingress requirements without mechanical switches that could harbor pathogens.
Được đề xuất
Capacitive Touch User Interface
The PIC18F65K90T-I/MR supports capacitive touch interfaces because its CTMU module drives up to 24 touch channels on the 64-pin package without external touch controller ICs. The integrated LCD driver simultaneously displays touch feedback on segment displays, enabling single-chip touch + display designs. The mTouch firmware library from Microchip supports buttons, sliders, and proximity sensing with sub-50 ms response, suitable for appliance front panels.
Được đề xuất
Home Appliance with Segment LCD Display
The PIC18F65K90T-I/MR drives home appliances because its integrated segment LCD driver eliminates HT1621-type external drivers, while 54 I/O pins connect to relays, triacs, and keypads for washers, ovens, and HVAC thermostats. The 32KB Flash holds appliance-specific UI state machines plus safety diagnostics. Operating from 5V nominal industrial rails with -40C to +85C temperature range, it tolerates appliance under-cabinet thermal environments without derating.
Được đề xuất
Automotive Dashboard Cluster (Non-Safety)
The PIC18F65K90T-I/MR fits non-safety automotive clusters because its 384-segment LCD driver powers small gauge displays without external drivers, while the 54 I/O pins read switches, drive warning LEDs, and interface LIN bus for body electronics. The -40C to +85C industrial range covers cabin environments; under-hood applications require the automotive-grade variant. The PIC18F's deterministic interrupt latency suits real-time switch debouncing.
Được đề xuất
Water/Gas Meter with LCD and Touch Wake
The PIC18F65K90T-I/MR is ideal for water and gas meters because its nanoWatt XLP technology achieves sub-100nA sleep current while integrated LCD segments display consumption readings without external drivers. CTMU enables capacitive touch wake-up buttons that draw zero current in standby, with the MCU waking on touch and driving the LCD for a few seconds before re-entering sleep. With 32KB Flash, the meter can implement auto-meter-reading protocol stacks (wM-Bus or LoRa WAN MAC).
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F65K90T-I/MR — 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 | PIC18F65K90-I/MR | PIC18F65K90-E/MR | PIC18F65K22-E/MR |
|---|---|---|---|---|
| Package | 64-pin QFN EP (MR) | 64-pin QFN EP (MR) - same | 64-pin QFN EP (MR) - same | 64-pin QFN EP (MR) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB | 32 KB | 32 KB | 64 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 4 KB |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +125C (Extended) |
| LCD Driver | Integrated, up to 384 segments | Integrated, 384 segments | Integrated, 384 segments | No integrated LCD |
| CTMU Touch Channels | Up to 24 | Up to 24 | Up to 24 | Up to 16 |
| Supply Voltage | 4.2V to 5.5V | 4.2V to 5.5V | 4.2V to 5.5V | 2.3V to 5.5V |
| Packaging Format | Tape & Reel (T-suffix) | Tray (no T-suffix) | Tray | Tray |
Bảo phân biệt quan trọng
- Integrated LCD driver up to 384 segments with no external driver IC (vsPIC18F65K22-E/MR)
- Industrial temperature range -40C to +85C in standard grade (vsPIC18F65K90-E/MR)
- Higher touch channel count via CTMU (vsPIC18F65K22-E/MR)
Ghi chú thiết kế
The 64-pin QFN EP package's exposed thermal pad MUST be soldered to a ground plane with thermal vias (typically 9-16 vias in a 3x3 or 4x4 array) to achieve the rated thermal performance. Estimated: at 40 MHz with all peripherals active and typical 25 mA I/O current, power dissipation is approximately 100-150 mW; without the EP soldered, junction temperature rises 30-40 C/W above ambient, potentially exceeding 85C at high ambient. Per Microchip AN2074 and the PIC18F65K90 family datasheet thermal section, the EP should use 0.2 mm diameter vias with 0.5 mm pitch.
Place decoupling capacitors (100 nF ceramic) on every VDD/AVDD pin within 3 mm of the pin, plus a bulk 10 uF tantalum or ceramic at the supply input. The PIC18F65K90 has multiple VDD/VSS pairs (pins 10/9, 22/21, 32/31, 42/41, 52/51, 62/61); each pair requires its own 100 nF decoupling. A single bulk cap is insufficient. The 32 kHz crystal or resonator on OSC1/OSC2 should be placed within 5 mm with short traces and a grounded guard ring.
Route the ICSP programming pins PGC (RB6) and PGD (RB7) directly to a 2x5 header or test pad array with no series components; Microchip ICD programmers require direct access. The MCLR pin needs a 10 kohm pull-up to VDD plus a 100 nF cap to ground for proper reset; if using in-circuit serial programming, isolate MCLR from external reset circuitry. Keep analog traces (AN0-AN12) short and away from digital switching traces to minimize ADC noise.
Common pitfalls: (1) Configuring a pin as analog when its digital input is also enabled causes 1-2 mA shoot-through current - always clear the corresponding ANSEL bit for digital pins. (2) The LCD segment pins are multiplexed with port H; configuring port H as output while LCD is active results in display ghosting. (3) Forgetting to disable peripherals before sleep mode can prevent nanoWatt XLP from achieving sub-uA current - explicitly disable ADC, comparators, and unused peripherals in firmware before WFI or sleep instructions.
The 12-bit ADC achieves 60+ dB SNR only with proper analog ground isolation. Estimated: separate the AGND and DGND planes with a single-point connection under the AVDD pin; route analog traces over the AGND plane and digital traces over the DGND plane. Place a ferrite bead or small resistor between AVDD and VDD to isolate ADC switching noise. Reference Microchip AN1251 for ADC layout best practices on the PIC18F65K90 family.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product declaration. Not AEC-Q100 qualified - for automotive applications, choose PIC18F65K90T-I/MRRSL or PIC18F65K90-E/MR with automotive-grade screening. Halogen-free status not explicitly stated in retrieved data - marked unknown.
