PIC16C65BT-20I/PQ - 8-Bit 20MHz OTP MCU, 7KB, 44-MQFP | Microchip
MPN: PIC16C65BT-20I/PQ ✗ Cuối đờiPIC16C65BT-20I/PQ Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and programmable I/O peripherals. The PIC16CXX mid-range family uses a Harvard architecture with separate program and data buses, allowing the CPU to fetch instructions and read data simultaneously. The "mid-range" designation reflects the 14-bit instruction word width used by PIC16C6x parts, which is wider than the 12-bit instruction set used by baseline PIC16C5x devices. The PIC16C65B is therefore positioned as a general-purpose industrial and consumer controller with A/D conversion capability.
Key features of the PIC16C65BT-20I/PQ include the 20MHz maximum clock rate (with the "/20" speed suffix), 4.0V to 5.5V operating voltage, an on-chip Analog-to-Digital Converter, three timer/counter modules (Timer0, Timer1, Timer2), a synchronous serial port (SSP), a USART, 33 digital I/O pins, and an operating temperature range of -40C to +85C (industrial grade, "I" suffix). The "T" suffix indicates the tape-and-reel packaging option for high-volume surface-mount assembly. Power consumption is approximately 2 mA typical at 5V and 4MHz.
The PIC16C65B architecture combines a RISC-like instruction set with only 35 single-word instructions, most of which execute in a single instruction cycle (200 ns at 20MHz). The OTP program memory allows one-time field programming via Microchip's ICSP (In-Circuit Serial Programming) interface, which is suitable for low- to medium-volume production. The device includes an enhanced capture/compare/PWM module (ECCP) and supports both parallel slave port and PSP operations, making it suitable for systems that interface with external data buses or motor-control peripherals.
Typical applications include industrial automation controllers, consumer-electronics front panels, automotive body and convenience modules, instrumentation front-ends with A/D input, and embedded-control subsystems that require a deterministic mid-range CPU. The wide industrial temperature range makes it appropriate for factory-floor equipment and outdoor-installed controllers.
When designing with this part, ensure the brown-out reset voltage threshold and the oscillator configuration match the application's supply profile. Because the PIC16C65BT uses OTP memory, firmware must be fully validated before programming; consider a flash-based PIC16F877 (same 44-pin QFP family) if in-field reprogrammability is required during development or production.
This page synthesizes distributor pricing and stock from Octopart/DigiKey/Mouser/Xecor, the Microchip USA parametric summary, drop-in same-package alternatives (44-MQFP), and engineering design notes not found on the manufacturer datasheet cover page.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65BT-20I/PQ — 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 PIC16C65BT-20I/PQ (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Timers, Program Memory Type, Serial Interfaces.
PIC16C65BT-04I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65B-20I/PQ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65B-04I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C65AT-20/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C64A-20I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATmega16-16AC
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65BT-20I/PQ Tỷ lệ tối đa & tính chất điện
| Family | PIC16CXX mid-range |
| Core | 8-bit PIC |
| Device Subfamily | PIC16C63A/65B/73B/74B |
| Maximum CPU Frequency | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| Data RAM | 192 bytes |
| Data EEPROM | None (OTP only) |
| Operating Voltage (Vdd) | 4.0 V to 5.5 V |
| I/O Pins | 33 |
| A/D Converter | Yes (8 channels, 8-bit resolution per family datasheet) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication | USART, SSP (SPI/I2C), Parallel Slave Port |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 44-MQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Instruction Set | 35 single-word instructions, 14-bit width |
Cấu hình chân PIC16C65BT-20I/PQ
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/VREF — Port A bit 3 / Analog input 3 / VREF+ |
| Chân 5 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 6 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SSP slave select |
| Chân 7 | RE0/RD — Port E bit 0 / Parallel Slave Port read |
| Chân 8 | RE1/WR — Port E bit 1 / Parallel Slave Port write |
| Chân 9 | RE2/CS — Port E bit 2 / Parallel Slave Port chip select |
| Chân 10 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 11 | OSC2/CLKOUT — Crystal oscillator output / clock output (Fosc/4) |
| Chân 12 | MCLR/VPP — Master clear reset (active low) / programming voltage |
| Chân 13 | RB0/INT — Port B bit 0 / External interrupt input |
| Chân 14 | RB1 — Port B bit 1 |
| Chân 15 | RB2 — Port B bit 2 |
| Chân 16 | RB3 — Port B bit 3 |
| Chân 17 | RB4 — Port B bit 4 |
| Chân 18 | RB5 — Port B bit 5 |
| Chân 19 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 20 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 21 | VSS — Ground |
| Chân 22 | VDD — Positive supply voltage (+5V nominal) |
| Chân 23 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock |
| Chân 24 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 output |
| Chân 25 | RC2/CCP1 — Port C bit 2 / CCP1 PWM/capture output |
| Chân 26 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 27 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 28 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 29 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| Chân 30 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| Chân 31 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port data bit 0 |
| Chân 32 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port data bit 1 |
| Chân 33 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port data bit 2 |
| Chân 34 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port data bit 3 |
| Chân 35 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port data bit 4 |
| Chân 36 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port data bit 5 |
| Chân 37 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port data bit 6 |
| Chân 38 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port data bit 7 |
| Chân 39 | VSS — Ground (second Vss pin for supply decoupling) |
| Chân 40 | VDD — Positive supply voltage (second Vdd pin) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16C65BT-20I/PQ phù hợp cho 6 Áp dụngs: Industrial Automation Controllers, Consumer Electronics Front Panels, Automotive Body and Convenience Modules, Instrumentation and A/D Front-Ends, Motor Control and PWM Drives, Embedded Control Subsystems.
Industrial Automation Controllers
The PIC16C65BT-20I/PQ's -40C to +85C industrial temperature range, 4.0V-5.5V supply tolerance, and on-chip 8-channel 8-bit A/D converter make it a fit for industrial automation controllers driving sensor interfaces and front-end signal conditioning. Its 20MHz CPU delivers deterministic 200ns instruction cycles, supporting closed-loop control loops up to several kHz without jitter. The 7KB OTP memory holds typical state-machine firmware for PLC-style I/O modules.
Được đề xuất
Consumer Electronics Front Panels
For consumer electronics front panels (microwave ovens, washing-machine displays, set-top boxes), the PIC16C65BT-20I/PQ provides 33 I/O pins to drive keypads, LED matrices, character LCDs, and rotary encoders without external muxing. The OTP memory secures firmware against post-production code theft - critical for consumer-volume IP protection - while the 35 single-word PIC instructions simplify small-team firmware development. The 20MHz core drives refresh rates for multiplexed 7-segment LED displays above 100Hz, eliminating flicker.
Được đề xuất
Automotive Body and Convenience Modules
The PIC16C65BT-20I/PQ's industrial temperature range (suitable for cabin-mounted modules) and 4.0V-5.5V supply tolerance (compatible with 12V battery after regulator) make it a fit for automotive body and convenience modules such as seat controllers, mirror-adjustment logic, and interior lighting drivers. The USART and SSP peripherals enable LIN-bus or K-line communication via external transceivers, while the PWM module drives LED dimming and motor speed control. Note: AEC-Q100 qualification is not stated in the verified data.
Được đề xuất
Instrumentation and A/D Front-Ends
For instrumentation front-ends (digital multimeters, sensor signal conditioners, hand-held data loggers), the PIC16C65BT-20I/PQ's integrated 8-channel 8-bit A/D converter samples multiple analog sensors without an external ADC, while the 33 digital I/O lines drive displays and keypads. The 5 MIPS performance supports simple digital filtering (moving average) on the raw ADC data and drives a serial UART output to a host PC. The 192-byte RAM accommodates 64-sample averaging buffers for noise reduction.
Được đề xuất
Motor Control and PWM Drives
The PIC16C65BT-20I/PQ includes an enhanced Capture/Compare/PWM (ECCP) module that generates motor-drive PWM at frequencies up to 20kHz (above the audible band) with 10-bit resolution - ideal for small DC-motor or stepper-driver boards. The USART enables command input from a master controller, and the 7KB OTP holds closed-loop PID firmware for velocity or position control. The 44-MQFP package provides enough I/O for quadrature-encoder feedback inputs plus fault-detection GPIOs.
Được đề xuất
Embedded Control Subsystems
In multi-MCU embedded systems, the PIC16C65BT-20I/PQ often serves as a dedicated peripheral-controller (sensor hub, keypad scanner, LED animator) that offloads real-time tasks from a main processor. Its I2C/SPI slave ports allow simple integration with a host CPU via a 2- or 3-wire bus, and the small 44-MQFP footprint fits onto auxiliary daughter-cards. The OTP memory locks the peripheral firmware so end customers cannot re-purpose the subsystem, preserving the OEM's IP across the supply chain.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65BT-20I/PQ — 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 | PIC16C65B-20I/PQ | PIC16C65AT-20/PQ | PIC16C64A-20I/PQ | ATmega16-16AC |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology (legacy Atmel) |
| Package | 44-MQFP (10x10 mm) | 44-MQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same | 44-MQFP (10x10 mm) - same footprint |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 16 MHz (-20%) |
| Program Memory Type | OTP (7 KB / 4K x 14) | OTP 7 KB - same | OTP 7 KB - same | OTP 4 KB (-43%) | Flash 16 KB (+129%) |
| Data RAM | 192 bytes | 192 bytes - same | 192 bytes - same | 192 bytes - same | 1 KB (+422%) |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) |
| Core Architecture | PIC16CXX mid-range (Harvard, 14-bit instr) | PIC16CXX mid-range - same | PIC16CXX mid-range - same | PIC16CXX mid-range - same | AVR 8-bit RISC (firmware incompatible) |
| A/D Converter | 8-channel, 8-bit | 8-channel, 8-bit - same | 8-channel, 8-bit - same | 5-channel, 8-bit (-38%) | 8-channel, 10-bit (+25% resolution) |
Bảo phân biệt quan trọng
- Tape-and-reel packaging for SMT production lines (vsPIC16C65B-20I/PQ)
- Industrial temperature grade (vsPIC16C65B-20/PQ)
- Larger program memory vs predecessor (vsPIC16C64A-20I/PQ)
- More A/D channels than PIC16C64A (vsPIC16C64A-20I/PQ)
Ghi chú thiết kế
Estimated: At 20MHz the PIC16C65BT-20I/PQ requires a 4-layer PCB with a continuous ground plane under the 44-MQFP package and decoupling capacitors of 100nF (one per Vdd pin, placed within 5mm of the pin) plus a 10uF bulk capacitor near the IC. Trace lengths on the OSC1/OSC2 crystal lines must be kept under 10mm to avoid clock jitter; use a guard ring around the crystal body to isolate it from switching signals.
The PIC16C65BT uses One-Time Programmable (OTP) memory - there is NO in-circuit reprogramming option once the part is programmed in production. Always program only fully-validated firmware; if any code-change risk exists, use a flash-based sibling such as PIC16F877 in the same 44-MQFP footprint for development and final production. Also ensure the ICSP clock (PGC, pin 19) and ICSP data (PGD, pin 20) lines have 4.7kohm pull-ups during programming to prevent programming failures.
The PIC16C65BT-20I/PQ supply voltage is 4.0V to 5.5V nominal; using a 3.3V supply is NOT supported and will cause brown-out-reset events at low temperatures. Always enable the internal brown-out reset (BOR) circuit via the configuration bits to ensure clean reset behavior during power-up transients. For automotive or industrial applications with a 12V or 24V bus, add a pre-regulator (e.g., LM7805 or a switching pre-converter) before the MCU's Vdd pin.
When using the Parallel Slave Port (PSP), the read/write strobe timing must respect the 200ns minimum cycle time at 20MHz; if the host bus runs faster than 5MHz, insert wait states via the RE0/RE1/RE2 control lines. For SPI communication with peripheral devices at >2MHz, add 33pF capacitors on SCK (pin 26) and SDI/SDO (pins 27/28) to dampen ringing on long PCB traces.
Thông tin tuân thủ
Compliance status not stated in the verified web data; this is an obsolete Microchip part from the PIC16CXX OTP family (released before widespread RoHS enforcement). Verify RoHS compliance on the Microchip product page before designing into new RoHS-bound equipment.
