PIC18F67K90T-I/PT - 64MHz 8-bit PIC MCU 128KB Flash LCD TQFP-64
MPN: PIC18F67K90T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.71 | $67.10 |
| 100 | $5.96 | $596.00 |
| 500 | $5.21 | $2,605.00 |
| 1,000 | $4.62 | $4,620.00 |
PIC18F67K90T-I/PT Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and a configurable set of peripheral interfaces into one package. Within the MCU hierarchy, this part is a CISC Harvard-architecture device in the PIC18 family, optimized for low-power embedded control with on-chip LCD driving. It uses a Flash-based program store allowing in-system re-programming and is widely deployed where battery life, an integrated glass driver, and rich I/O are critical.
Key specifications include 128 KB (64K x 16) of Flash program memory, 4 KB of RAM, a maximum CPU clock of 64 MHz (16 MIPS instruction throughput), an operating voltage range of 1.8 V to 5.5 V (with the wider 4.2 V to 5.5 V datasheet band for full peripheral operation), 54 digital I/O pins, a 12-bit A/D converter, and an integrated LCD driver supporting up to 64 segments. The 'T' suffix denotes Tape & Reel packaging and the 'I' suffix denotes the industrial -40 C to +85 C operating temperature grade.
The PIC18F67K90 uses Microchip's nanoWatt XLP technology, achieving sleep currents in the nanoamp range, making it suitable for battery-powered applications. The CTMU module enables capacitive touch sensing using the LCD electrodes, allowing touch-button interfaces on the same glass as the display. Hardware CRC, mTouch capacitive touch libraries, and RTCC with timestamp round out the on-chip feature set.
Typical applications include battery-powered LCD instrumentation, household appliances with touch interfaces, medical glucose/infusion meters, industrial HMI panels, security keypads with displays, and any portable device that combines a segmented LCD with capacitive buttons. The integrated peripherals eliminate the need for an external LCD driver and a separate touch controller, reducing both BOM cost and PCB footprint.
Designers should review the PIC18F87K90 family datasheet for the specific pinout, segment-channel mapping, and CTMU calibration procedure. The TQFP-64 land pattern is compatible with the wider PIC18F87K90 family (PIC18F87K90, PIC18F57K90), enabling a single PCB layout to accept multiple density variants.
Drop-in alternatives for PIC18F67K90T-I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC18F67K90T-I/PT (same form factor and footprint) — differing in Package, Core Architecture, ADC, Operating Temperature, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F67K90-I/PT
✅ Drop-In✓ In Stock
$7.55 / Unit
View Datasheet →PIC18F67K90T-I/MR
✅ Drop-In✓ In Stock
$5.78 / Unit
View Datasheet →PIC18F67K90T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F66K90T-I/PT
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →PIC18F67K22T-I/PT
✅ Drop-In✓ In Stock
$3.96 / Unit
View Datasheet →PIC18F67K90T-I/PT Maximum Ratings & Electrical Characteristics
| Core | PIC18 (8-bit Harvard, CISC) |
| Family | PIC18F87K90 / PIC18F67K90 |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data RAM | 4 KB |
| Maximum CPU Clock | 64 MHz |
| MIPS Performance | 16 MIPS |
| Supply Voltage (Operating) | 1.8 V to 5.5 V (extended 4.2 V to 5.5 V for full peripheral range) |
| I/O Pins | 54 |
| CTMU Module | Yes (Charge Time Measurement Unit for capacitive touch) |
| nanoWatt XLP | Yes (ultra-low-power sleep modes) |
| Package | TQFP-64 (10x10 mm, 1.0 mm height, MS-026) |
| Operating Temperature | -40 C to +85 C (industrial, 'I' suffix) |
| Mounting Type | Surface Mount (Tape & Reel, 'T' suffix) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18F67K90T-I/PT Pin Configuration
| Pin 1 | RC0 — Digital I/O / T0CKI timer0 clock input |
| Pin 2 | RC1 — Digital I/O / CCP2 capture/compare/PWM |
| Pin 3 | RC2 — Digital I/O / CCP1 |
| Pin 4 | RC3 — Digital I/O / SCL I2C clock |
| Pin 5 | RC4 — Digital I/O / SDA I2C data |
| Pin 6 | RC5 — Digital I/O / SDO SPI data out |
| Pin 7 | RC6 — Digital I/O / TX UART transmit |
| Pin 8 | RC7 — Digital I/O / RX UART receive |
| Pin 9 | RE0 — Digital I/O |
| Pin 10 | RE1 — Digital I/O |
| Pin 11 | RE2 — Digital I/O |
| Pin 12 | RE3 — Digital I/O |
| Pin 13 | RE4 — Digital I/O |
| Pin 14 | RE5 — Digital I/O |
| Pin 15 | RE6 — Digital I/O |
| Pin 16 | RE7 — Digital I/O |
| Pin 17 | VSS — Ground reference |
| Pin 18 | VDD — Positive supply voltage |
| Pin 19 | RA0 — Digital I/O / AN0 analog input |
| Pin 20 | RA1 — Digital I/O / AN1 |
| Pin 21 | RA2 — Digital I/O / AN2 |
| Pin 22 | RA3 — Digital I/O / AN3 / VREF+ |
| Pin 23 | RA4 — Digital I/O / AN4 |
| Pin 24 | RA5 — Digital I/O / AN5 / VREF- |
| Pin 25 | RB0 — Digital I/O / INT0 external interrupt |
| Pin 26 | RB1 — Digital I/O / INT1 |
| Pin 27 | RB2 — Digital I/O / INT2 |
| Pin 28 | RB3 — Digital I/O / INT3 |
| Pin 29 | RB4 — Digital I/O / KBI0 |
| Pin 30 | RB5 — Digital I/O / KBI1 |
| Pin 31 | RB6 — Digital I/O / KBI2 / PGC ICD |
| Pin 32 | RB7 — Digital I/O / KBI3 / PGD ICD |
| Pin 33 | AVSS — Analog ground |
| Pin 34 | AVDD — Analog positive supply |
| Pin 35 | RD0 — Digital I/O / PSP0 |
| Pin 36 | RD1 — Digital I/O / PSP1 |
| Pin 37 | RD2 — Digital I/O / PSP2 |
| Pin 38 | RD3 — Digital I/O / PSP3 |
| Pin 39 | RD4 — Digital I/O / PSP4 |
| Pin 40 | RD5 — Digital I/O / PSP5 |
| Pin 41 | RD6 — Digital I/O / PSP6 |
| Pin 42 | RD7 — Digital I/O / PSP7 |
| Pin 43 | VSS — Ground reference |
| Pin 44 | VDD — Positive supply voltage |
| Pin 45 | RF0 — Digital I/O / LCD segment driver |
| Pin 46 | RF1 — Digital I/O / LCD segment driver |
| Pin 47 | RF2 — Digital I/O / LCD segment driver |
| Pin 48 | RF3 — Digital I/O / LCD segment driver |
| Pin 49 | RF4 — Digital I/O / LCD segment driver |
| Pin 50 | RF5 — Digital I/O / LCD segment driver |
| Pin 51 | RF6 — Digital I/O / LCD segment driver |
| Pin 52 | RF7 — Digital I/O / LCD segment driver |
| Pin 53 | RG0 — Digital I/O / LCD segment driver |
| Pin 54 | RG1 — Digital I/O / LCD segment driver |
| Pin 55 | RG2 — Digital I/O / LCD segment driver |
| Pin 56 | RG3 — Digital I/O / LCD segment driver |
| Pin 57 | RG4 — Digital I/O / LCD segment driver |
| Pin 58 | MCLR — Master Clear (reset, active low) |
| Pin 59 | OSC1 — Crystal oscillator input |
| Pin 60 | OSC2 — Crystal oscillator output |
| Pin 61 | VDD — Positive supply voltage |
| Pin 62 | VSS — Ground reference |
| Pin 63 | RH0 — Digital I/O / LCD segment driver |
| Pin 64 | RH1 — Digital I/O / LCD segment driver |
Typical Applications
PIC18F67K90T-I/PT is suitable for 6 applications: Battery-Powered LCD Instrumentation, Capacitive-Touch HMI Panels, Medical Glucose / Infusion Pumps, Industrial HMI / Process Meters, Security Keypads with LCD, Home Appliance Front Panels.
Battery-Powered LCD Instrumentation
The PIC18F67K90T-I/PT is purpose-built for battery-powered LCD products that demand years of service life. With nanoWatt XLP sleep currents in the nanoamp range and the integrated LCD driver (eliminating an external charge-pump IC), the part can drive a 4-common / 32-segment glass directly while running the CPU at 64 MHz only when measurements occur. At 1.8 V to 5.5 V supply and 54 I/O pins, designers can support two AA cells, a coin-cell RTC backup, and a segmented LCD plus push-button interface on a single PCB.
Recommended
Capacitive-Touch HMI Panels
The Charge Time Measurement Unit (CTMU) and mTouch library turn the LCD segment electrodes into capacitive touch buttons without any external touch controller. The PIC18F67K90T-I/PT's 64 MHz CPU clocks the CTMU fast enough to scan 24+ touch channels at sub-10 ms response times, while the 12-bit ADC captures analog sensor data from the same chip. Designers get BOM savings by combining the display driver and touch controller in one MCU, with all touch thresholds handled in firmware via Microchip's free mTouch libraries.
Recommended
Medical Glucose / Infusion Pumps
Portable medical devices benefit from the PIC18F67K90T-I/PT's combination of regulatory-friendly -40 C to +85 C industrial temperature range (E suffix extends to +125 C), nanoWatt XLP battery life, and hardware CRC for tamper detection on dose logs. The 128 KB Flash supports IEC 62304 firmware with substantial headroom for a safety stack and bootloader, while the LCD driver presents measurement values on the patient-facing glass display. The CTMU enables touch-sensitive membrane keypads without extra components.
Recommended
Industrial HMI / Process Meters
Factory-floor panel meters require an MCU that can drive a numeric LCD, handle keypad input, run a 4 mA to 20 mA loop interface, and survive -40 C to +85 C ambient. The PIC18F67K90T-I/PT provides 54 GPIO pins for keypad scanning, isolated UART for Modbus RTU, and a 12-bit ADC for the analog loop measurement - all in a single 64-pin TQFP. The integrated LCD driver cuts the BOM by replacing a dedicated HT1621 or similar segment driver with on-chip hardware.
Recommended
Security Keypads with LCD
Alarm keypads with character displays need an MCU that can scan a 4x4 matrix, drive a 16x2 or 20x4 character LCD equivalent segmented display, communicate with the main panel via encrypted bus, and survive for years on a backup battery. The PIC18F67K90T-I/PT covers all of these with its 54 GPIO (matrix + LCD + comm bus), hardware CRC, and nanoWatt XLP deep-sleep mode. The CTMU enables capacitive-touch slider for arm/disarm without mechanical buttons.
Recommended
Home Appliance Front Panels
White-goods front panels (washers, dishwashers, ovens) combine a segmented LCD, capacitive-touch buttons, and a triac/stepper-motor interface - exactly the workload that the PIC18F67K90T-I/PT was designed for. Its 64 MHz CPU cycles the LCD duty routine fast enough for high-contrast glass, the CTMU senses the touch overlay, and the 54 GPIO handles motor phase drivers and rotary encoders. The 1.8 V to 5.5 V range lets the same PCB host 5 V logic or 3.3 V variants.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F67K90T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F67K90-I/PT | PIC18F67K90T-I/MR | PIC18F67K90T-E/PT | PIC18F66K90T-I/PT | PIC18F67K22T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit | PIC18 8-bit |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB (-50%) | 128 KB |
| Maximum CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| LCD Driver | Yes (integrated) | Yes | Yes | Yes | Yes | No (K22 family lacks LCD) |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C |
| Packaging | Tape & Reel (T) | Tray (no T) | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) | Tape & Reel (T) |
Key Differentiators
- Same TQFP-64 die, different packaging only (vs PIC18F67K90-I/PT)
- Extended temperature option in same footprint (vs PIC18F67K90T-E/PT)
- Memory-scaled drop-in (vs PIC18F66K90T-I/PT)
- Integrated LCD driver eliminates external chip (vs PIC18F67K22T-I/PT)
Design Notes
Use the nanoWatt XLP sleep modes aggressively for battery-powered designs. Idle mode draws ~50 nA typical and Sleep mode draws <100 nA typical per the family datasheet; the PIC18F67K90T-I/PT wakes from sleep on RTCC alarm, INTx edge, or watchdog timeout in under 5 us. A typical battery-powered LCD meter can run for 5+ years on 2x AA cells if the CPU spends >99% of its time in sleep, waking only to refresh the LCD and sample sensors.
Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a single 10 uF bulk capacitor near the package. The TQFP-64 has multiple VDD/VSS pairs (pins 18/17, 44/43, 61/62, plus AVDD/AVSS at 34/33) - every analog and digital rail must be locally bypassed. A 4-layer PCB with a solid ground plane is strongly recommended for EMI-sensitive products that combine LCD segment drivers with capacitive touch sensing.
Keep LCD segment traces short and parallel, with equal trace lengths per COM/SEG pair to avoid contrast non-uniformity across the glass. Route CTMU touch channels on the opposite side of the PCB from the LCD segment traces, and shield them with a ground pour to prevent capacitive-coupling noise from the LCD charge-pump waveforms from injecting into the touch measurements. The CTMU calibration sequence (per Microchip TB3068) must be re-run for any PCB layout change.
Do not confuse the 'T' suffix with a different silicon revision - PIC18F67K90T-I/PT and PIC18F67K90-I/PT share identical silicon and only differ in Tape & Reel versus Tray packaging. Do not select the K22 family (PIC18F67K22T-I/PT) if your design requires the integrated LCD driver - the K22 silicon intentionally omits the LCD peripheral. Do not exceed 5.5 V on any pin; absolute-maximum VDD is 6.5 V and brief overshoots will permanently damage the part.
Compliance Information
RoHS-compliant per Microchip product page and DigiKey listing. Not AEC-Q100 qualified - for automotive applications, source parts through Microchip's AEC-Q100 program (separate part numbers). Lead-free reflow profile per JEDEC J-STD-020.
