PIC18F6720-I/PT - 8-Bit 128KB Flash MCU 64-TQFP | Microchip
MPN: PIC18F6720-I/PT ✓ Hoạt độngPIC18F6720-I/PT Tóm tắt
A microcontroller (MCU) is a self-contained integrated circuit that combines a processor core, program memory, data memory, and configurable peripherals on a single die. Within the semiconductor taxonomy, the PIC18F6720 sits at microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC18F family uses a modified Harvard RISC architecture with a 16-bit instruction word, allowing most instructions to execute in a single cycle and delivering up to 10 MIPS at 40 MHz clock input.
Key features include 12 channels of 10-bit Analog-to-Digital conversion, five capture/compare/PWM (CCP) modules, two analog comparators, an addressable USART, a synchronous serial port configurable as 3-wire SPI or 2-wire I2C, and External Memory Addressing for off-chip program/data expansion. Self-programming Flash and In-Circuit Debug (ICD) support simplify field firmware updates and bring-up.
The device is fabricated in Microchip's enhanced Flash process, which provides high endurance and retention while allowing the same die to be programmed in-system. The 54 general-purpose I/O pins and multiple timers make it suitable for control-intensive embedded designs that need more I/O than smaller 28- or 40-pin PIC18 devices.
Typical applications include industrial control panels, motor control, instrumentation front ends, HVAC controllers, security systems, and legacy 8-bit designs migrating from PIC16 or PIC17 families. The 64-pin TQFP footprint is shared across the PIC18F6520/6620/6720/8520/8620/8720 family, enabling memory and feature scaling without PCB redesign.
When designing with this device, note that the 5 V supply and 25 MHz maximum operating frequency require careful decoupling and that the TQFP-64 package needs adequate copper area for thermal relief during reflow. 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 PIC18F6720-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 PIC18F6720-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Timers, Operating Temperature, ADC.
PIC18F6620-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F8720-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F6720-I/PTG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F6720T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F6722-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F6520-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F6720-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC18F RISC (modified Harvard, 16-bit instruction word) |
| Bề rộng đường dữ liệu | 8-bit |
| Maximum CPU Speed | 25 MHz (10 MIPS) |
| Program Memory Size | 128 KB (64K x 16) Flash |
| EEPROM Size | 1024 bytes |
| RAM Size | 3936 bytes |
| Supply Voltage Range | 4.2 V to 5.5 V |
| Number of I/O Pins | 54 |
| ADC Resolution | 10-bit |
| ADC Channels | 12 |
| Capture/Compare/PWM Modules | 5 |
| Comparators | 2 |
| Serial Interfaces | USART, SPI, I2C (synchronous serial port) |
| External Memory Addressing | Yes |
| Self-Programming Flash | Yes |
| In-Circuit Debug (ICD) | Yes |
| Hộp | 64-TQFP (10x10 mm, 1 mm height) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F6720-I/PT
| Chân 1 | MCLR/VPP — Master clear (reset) input / programming voltage |
| Chân 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Chân 4 | RA2/AN2/VREF- — Port A bit 2 / analog input 2 / negative reference |
| Chân 5 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / positive reference |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Chân 8 | RE0/RD — Port E bit 0 / parallel slave port read control |
| Chân 9 | RE1/WR — Port E bit 1 / parallel slave port write control |
| Chân 10 | RE2/CS — Port E bit 2 / parallel slave port chip select |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | VSS — Ground |
| Chân 13 | OSC1/CLKI — Oscillator input / external clock input |
| Chân 14 | OSC2/CLKO — Oscillator output / clock output |
| Chân 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| Chân 17 | RC2/CCP1 — Port C bit 2 / capture/compare/PWM 1 |
| Chân 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — Port D bit 0 / parallel slave port data 0 |
| Chân 20 | RD1/PSP1 — Port D bit 1 / parallel slave port data 1 |
| Chân 21 | RD2/PSP2 — Port D bit 2 / parallel slave port data 2 |
| Chân 22 | RD3/PSP3 — Port D bit 3 / parallel slave port data 3 |
| Chân 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 25 | RC6/TX/CK — Port C bit 6 / USART transmit / synchronous clock |
| Chân 26 | RC7/RX/DT — Port C bit 7 / USART receive / synchronous data |
| Chân 27 | RD4/PSP4 — Port D bit 4 / parallel slave port data 4 |
| Chân 28 | RD5/PSP5 — Port D bit 5 / parallel slave port data 5 |
| Chân 29 | RD6/PSP6 — Port D bit 6 / parallel slave port data 6 |
| Chân 30 | RD7/PSP7 — Port D bit 7 / parallel slave port data 7 |
| Chân 31 | VSS — Ground |
| Chân 32 | VDD — Positive supply voltage |
| Chân 33 | RB0/INT0 — Port B bit 0 / external interrupt 0 |
| Chân 34 | RB1/INT1 — Port B bit 1 / external interrupt 1 |
| Chân 35 | RB2/INT2 — Port B bit 2 / external interrupt 2 |
| Chân 36 | RB3/CCP2 — Port B bit 3 / capture/compare/PWM 2 |
| Chân 37 | RB4 — Port B bit 4 |
| Chân 38 | RB5/PGM — Port B bit 5 / low-voltage programming input |
| Chân 39 | RB6/PGC — Port B bit 6 / in-circuit debugger clock |
| Chân 40 | RB7/PGD — Port B bit 7 / in-circuit debugger data |
| Chân 41 | RE3 — Port E bit 3 |
| Chân 42 | RE4 — Port E bit 4 |
| Chân 43 | RE5 — Port E bit 5 |
| Chân 44 | RE6 — Port E bit 6 |
| Chân 45 | RE7 — Port E bit 7 |
| Chân 46 | RF0 — Port F bit 0 |
| Chân 47 | RF1 — Port F bit 1 |
| Chân 48 | RF2 — Port F bit 2 |
| Chân 49 | RF3 — Port F bit 3 |
| Chân 50 | RF4 — Port F bit 4 |
| Chân 51 | RF5 — Port F bit 5 |
| Chân 52 | RF6 — Port F bit 6 |
| Chân 53 | RF7 — Port F bit 7 |
| Chân 54 | RG0 — Port G bit 0 |
| Chân 55 | RG1 — Port G bit 1 |
| Chân 56 | RG2 — Port G bit 2 |
| Chân 57 | RG3 — Port G bit 3 |
| Chân 58 | RG4 — Port G bit 4 |
| Chân 59 | RG5 — Port G bit 5 |
| Chân 60 | RG6 — Port G bit 6 |
| Chân 61 | RG7 — Port G bit 7 |
| Chân 62 | RH0 — Port H bit 0 |
| Chân 63 | RH1 — Port H bit 1 |
| Chân 64 | RH2 — Port H bit 2 |
Ứng dụng tiêu biểu
PIC18F6720-I/PT phù hợp cho 6 Áp dụngs: Industrial Control Panels, Motor Control, Instrumentation Front Ends, HVAC and Building Automation, Security and Access Control, Legacy 8-Bit Design Migration.
Industrial Control Panels
The PIC18F6720-I/PT fits industrial control panels because its 54 general-purpose I/O pins, 12-channel 10-bit ADC, and five CCP modules can directly drive relays, read limit switches, and generate PWM for valve or actuator control without external glue logic. Operating from a 4.2 V to 5.5 V supply with a -40C to +85C industrial temperature range, it tolerates the electrical noise and temperature swings of factory floors. The 128 KB Flash accommodates ladder-logic interpreters or state-machine firmware, while 1024 bytes of EEPROM stores calibration constants and setpoints across power cycles. In a typical panel, the MCU scans digital inputs, updates an LCD or HMI over USART, and drives output drivers through the CCP PWM channels; the trade-off versus a 3.3 V ARM Cortex-M device is higher power consumption but superior 5 V noise immunity and simpler interfacing to legacy industrial sensors.
Được đề xuất
Motor Control
The PIC18F6720-I/PT supports motor control through its five capture/compare/PWM modules, which generate complementary PWM waveforms for H-bridge or three-phase inverter topologies, and its 12-channel 10-bit ADC, which samples current-shunt and back-EMF signals for closed-loop commutation. At 25 MHz (10 MIPS), the core executes PID loops and space-vector modulation fast enough for brushed DC and low-to-mid-power BLDC motors. The two analog comparators enable hardware overcurrent trip without CPU intervention, protecting the power stage. In a typical design, the MCU reads Hall sensors or encoder pulses on the capture inputs, computes duty cycles, and updates the PWM registers each control period; the trade-off is that the 10-bit ADC limits current-loop resolution compared with a 12-bit ADC in newer PIC18K42 devices, so designs needing finer current sensing should consider the PIC18F45K42-I/PT.
Được đề xuất
Instrumentation Front Ends
The PIC18F6720-I/PT serves instrumentation front ends because its 12-channel 10-bit ADC multiplexes multiple sensor inputs, and its USART, SPI, and I2C ports stream digitized data to host processors or displays. The 128 KB Flash holds linearization tables and calibration algorithms, while 1024 bytes of EEPROM retains gain and offset coefficients. Running at 10 MIPS, the core can oversample and average ADC readings to improve effective resolution beyond 10 bits. In a typical data-acquisition board, the MCU sequentially samples thermocouples, strain gauges, or pressure sensors through an external multiplexer, applies polynomial correction, and transmits results over RS-485 via the USART; the trade-off versus a dedicated 16-bit ADC plus Cortex-M MCU is lower raw resolution but a single-chip, 5 V-friendly solution with fewer BOM lines.
Được đề xuất
HVAC and Building Automation
The PIC18F6720-I/PT suits HVAC and building automation controllers because its 54 I/O pins interface directly to thermistor networks, damper actuators, and relay outputs, and its USART supports BACnet or Modbus RTU communication over RS-485. The 5 V supply and -40C to +85C rating match the electrical environment of rooftop units and boiler rooms. The five CCP modules drive triac-fired heaters or variable-speed fan PWM, and the two comparators provide flame-sense or fault detection. In a typical controller, the MCU polls temperature and humidity sensors, runs a PID loop, and updates actuator outputs while servicing the serial bus; the trade-off versus a 3.3 V wireless SoC is the absence of integrated RF, requiring an external transceiver for networked installations.
Được đề xuất
Security and Access Control
The PIC18F6720-I/PT is used in security and access-control panels because its 128 KB Flash stores user credential databases and event logs, its 1024 bytes of EEPROM retains configuration across power loss, and its 54 I/O pins connect keypads, card readers, door strikes, and alarm sensors. The USART and I2C ports interface to RFID readers and EEPROM expansion, while the CCP modules drive piezo buzzers and status LEDs. Self-programming Flash allows remote firmware updates over the network. In a typical panel, the MCU authenticates credentials, logs events with timestamps from a timer, and controls lock outputs; the trade-off versus a Cortex-M4 with crypto acceleration is the lack of hardware AES, so encrypted communication must be implemented in software, consuming Flash and CPU cycles.
Được đề xuất
Legacy 8-Bit Design Migration
The PIC18F6720-I/PT is a migration target for legacy PIC16 and PIC17 designs that have outgrown their memory or I/O. Its 128 KB Flash, 3936 bytes RAM, and 54 I/O pins provide substantial headroom, while the 64-pin TQFP footprint is shared across the PIC18F6520/6620/6720/8520/8620/8720 family, allowing memory scaling without PCB changes. The 'C' compiler-friendly architecture and ICD debug support shorten porting effort. In a typical migration, engineers move existing assembly or C code to the PIC18F instruction set, remap peripherals, and validate timing; the trade-off is that the PIC18F6720 is a 5 V, 25 MHz device, so designs targeting lower power or higher performance should evaluate the pin-compatible PIC18F6722-I/PT or a 3.3 V PIC18F67J11-I/PT with a PCB redesign.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F6720-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 | PIC18F6620-I/PT | PIC18F8720-I/PT | PIC18F6722-I/PT | PIC18F6520-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128 KB (64K x 16) | 64 KB (32K x 16) | 128 KB (64K x 16) | 128 KB (64K x 16) | 32 KB (16K x 16) |
| RAM Size | 3936 bytes | 3936 bytes | 3936 bytes | 3936 bytes | 1536 bytes |
| EEPROM Size | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Maximum CPU Speed | 25 MHz (10 MIPS) | 25 MHz (10 MIPS) | 25 MHz (10 MIPS) | 25 MHz (10 MIPS) | 25 MHz (10 MIPS) |
| Supply Voltage Range | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V |
| Number of I/O Pins | 54 | 54 | 68 | 54 | 54 |
| ADC Channels / Resolution | 12 channels / 10-bit | 12 channels / 10-bit | 16 channels / 10-bit | 12 channels / 10-bit | 12 channels / 10-bit |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- 128 KB Flash in a 64-pin TQFP footprint (vsPIC18F6620-I/PT)
- 54 I/O pins with 12-channel 10-bit ADC (vsPIC18F6520-I/PT)
- Self-programming Flash and ICD debug (vsPIC18F6722-I/PT)
- 5 V operation with industrial temperature range (vsPIC18F67J11-I/PT)
Ghi chú thiết kế
Decouple every VDD pin (pins 11 and 32) with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, plus a 10 uF bulk capacitor on the board rail. The PIC18F6720-I/PT draws transient current during Flash programming and ADC conversion; inadequate decoupling causes brown-out resets and ADC code jitter. Microchip's PIC18F6520/8520/6620/8620/6720/8720 datasheet recommends a minimum 4.2 V supply, so verify the rail stays above this threshold during motor or relay switching transients.
Route the OSC1/OSC2 crystal traces as short as possible (under 10 mm) and keep them away from the CCP PWM outputs and the ADC input traces. Use a ground guard ring around the oscillator and place the load capacitors directly at the crystal pins. For the 64-pin TQFP, connect the exposed thermal pad (if present) to a solid ground plane with multiple vias to improve heat spreading and reduce ground bounce during high-current I/O switching.
Do not leave MCLR (pin 1) floating; connect it through a 10 kOhm pull-up to VDD and a 0.1 uF capacitor to VSS for reliable reset. The PIC18F6720-I/PT requires the MCLR pin to be driven to VPP during in-circuit programming, so ensure the programmer can override the pull-up. Also confirm that the ICD pins RB6/PGC and RB7/PGD are not loaded by external circuitry that would interfere with debugging.
Estimated: at 25 MHz operation, keep high-speed traces (OSC, SPI SCK, USART TX) shorter than 50 mm and reference them to a continuous ground plane. If the ADC inputs are routed near the CCP PWM outputs, expect capacitive coupling that can inject switching noise into the 10-bit conversions; separate analog and digital ground returns and filter ADC inputs with an RC network (for example 1 kOhm and 100 nF) to keep noise below 1 LSB.
Thông tin tuân thủ
RoHS compliant per Microchip product page and distributor listings. The PIC18F6720-I/PTG variant is the explicitly lead-free (Pb-free) ordering option. Not AEC-Q100 qualified; industrial temperature grade only.
