PIC16LC65A-04I/PQ - 8-bit MCU, 7KB OTP, 33 I/O, 44-MQFP | Microchip
MPN: PIC16LC65A-04I/PQ ✓ Hoạt độngPIC16LC65A-04I/PQ Tóm tắt
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and peripherals on one die. The PIC architecture belongs to the RISC (Reduced Instruction Set Computer) family, characterised by a small, fixed instruction set - typically 35 single-word instructions for the PIC16CXX core - where every instruction executes in a single instruction cycle except program branches, which take two. The PIC16LC65A uses a Harvard architecture with separate program and data buses, the program memory being one-time programmable (OTP) EPROM suitable for low-to-medium volume production runs where in-circuit programming flexibility is desired without the cost of windowed ceramic parts. In the broader taxonomy this part is: microcontroller -> 8-bit MCU -> PIC16 family -> RISC processor -> embedded computing.
Key features include 33 I/O pins capable of driving LEDs, relays, or interfacing to sensors, an integrated analog comparator, a USART/SCI synchronous-asynchronous serial port, a 16-bit timer/counter with capture/compare/PWM, a Watchdog Timer with on-chip RC oscillator for safety-critical applications, and power-saving SLEEP mode. The device supports in-circuit debugging via the ICSP interface and is rated for the industrial -40C to +85C temperature range.
Architecturally, the PIC16LC65A core executes one instruction per oscillator cycle (4-clock cycle), giving 1 MIPS at 4 MHz. Its OTP EPROM memory means each cell can be programmed once; it cannot be erased electrically but can be UV-erased in windowed variants (different MPN suffix). The device includes a wide operating voltage (3.0V-5.5V) suitable for both 3.3V and 5V systems, a brown-out reset, and a low-power SLEEP mode drawing microamp-level current.
Typical applications include industrial automation controllers, automotive body and chassis subsystems, consumer electronics, white goods, HVAC controls, and small appliance motor control where 33 I/O and 192-byte RAM are sufficient.
Trade-off to consider: the OTP memory is single-program only; for design-iteration cycles the flash-based PIC16F877A in the same 44-pin family is preferable. Always add 0.1uF decoupling near VDD and verify oscillator start-up time in your layout.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's own portfolio, and practical design considerations not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC65A-04I/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 PIC16LC65A-04I/PQ (cùng hình factor và footprint) — khác nhau ở Core Architecture, RAM Size, Package, Program Memory Size, Program Memory Type.
PIC16LC65A-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC65A-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC64A-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04I/L
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC63A-04I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04I/PQ Tỷ lệ tối đa & tính chất điện
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 bytes |
| CPU | 8-bit PIC RISC |
| Instruction Set | 35 single-word instructions |
| Maximum CPU Speed | 4 MHz (4 MIPS equivalent) |
| Điện áp cung cấp | 3.0 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 16-bit Timer/Counter with CCP |
| Communication Interfaces | USART/SCI, SSP/SPI/I2C |
| ADC | 8-bit, 8 channels (multiplexed) |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| Hộp | 44-pin Metric QFP (MQFP, PQ) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead Free | Yes |
Cấu hình chân PIC16LC65A-04I/PQ
| Chân 1 | OSC1/CLKIN — Oscillator crystal/clock input |
| Chân 2 | OSC2/CLKOUT — Oscillator crystal/output |
| Chân 3 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 4 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Chân 5 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Chân 6 | RA2/AN2/VREF- — Port A bit 2 / analog input 2 / VREF- |
| Chân 7 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / VREF+ |
| Chân 8 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 9 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Chân 10 | RE0/RD/AN5 — Port E bit 0 / read control / analog input 5 |
| Chân 11 | RE1/WR/AN6 — Port E bit 1 / write control / analog input 6 |
| Chân 12 | RE2/CS/AN7 — Port E bit 2 / chip select / analog input 7 |
| Chân 13 | VDD — Positive supply voltage |
| Chân 14 | VSS — Ground |
| Chân 15 | OSC1/CLKIN — Oscillator crystal/clock input (secondary) |
| Chân 16 | OSC2/CLKOUT — Oscillator crystal/output (secondary) |
| Chân 17 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / clock input |
| Chân 18 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| Chân 19 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Chân 20 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 21 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| Chân 22 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| Chân 23 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| Chân 24 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| Chân 25 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 26 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 27 | RC6/TX/CK — Port C bit 6 / USART TX / clock |
| Chân 28 | RC7/RX/DT — Port C bit 7 / USART RX / data |
| Chân 29 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| Chân 30 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| Chân 31 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| Chân 32 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| Chân 33 | VSS — Ground |
| Chân 34 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 35 | RB1 — Port B bit 1 |
| Chân 36 | RB2 — Port B bit 2 |
| Chân 37 | RB3/PGM — Port B bit 3 / low-voltage programming |
| Chân 38 | RB4 — Port B bit 4 |
| Chân 39 | RB5 — Port B bit 5 |
| Chân 40 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 41 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 42 | VDD — Positive supply voltage |
| Chân 43 | VSS — Ground |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LC65A-04I/PQ phù hợp cho 6 Áp dụngs: Industrial Automation Controller, Automotive Body & Chassis Subsystems, Consumer Electronics & White Goods, HVAC Control Systems, Small Appliance Motor Control, LED Display & Signage Drivers.
Industrial Automation Controller
The PIC16LC65A-04I/PQ suits industrial PLC sub-modules and small machine controllers where 33 I/O drive sensors, relays, and motor contactors directly. Its 3.0V-5.5V supply tolerates 24V-bus-derived rails, while the -40C to +85C industrial temperature grade supports cabinet installations. The Watchdog Timer with on-chip RC oscillator prevents lockup in factory environments, and the 8-bit ADC reads analog sensor bridges without an external converter.
Được đề xuất
Automotive Body & Chassis Subsystems
Within automotive body controllers, the PIC16LC65A-04I/PQ drives seat control, mirror positioning, and lighting modules via its 33 I/O and PWM-capable 16-bit timer. The 8-bit ADC monitors position sensors and battery voltage, while the USART interfaces to body-network peripherals. The -40C to +85C rating handles under-dash thermal conditions, though AEC-Q100-qualified variants should be selected for safety-critical subsystems.
Được đề xuất
Consumer Electronics & White Goods
Washing machines, microwave ovens, and small kitchen appliances use the PIC16LC65A-04I/PQ as the main control MCU. The 33 I/O drive 7-segment displays, keypad matrices, and triac-fired loads, while the 7 KB OTP holds the appliance program logic. The integrated USART enables diagnostics via service tools, and SLEEP mode reduces standby power below 1 microamp for energy-star ratings.
Được đề xuất
HVAC Control Systems
Thermostat and HVAC control boards use the PIC16LC65A-04I/PQ to read thermistor temperature, drive triac-controlled fans, and sequence compressors. The 8-bit ADC handles multiple temperature channels, while the PWM timer modulates damper actuators. The 44-pin MQFP package fits compact thermostat PCBs, and the industrial temperature range operates reliably in plenum environments.
Được đề xuất
Small Appliance Motor Control
Universal motors in blenders, food processors, and small fans rely on the PIC16LC65A-04I/PQ for back-EMF sensing, triac phase-angle firing, and overcurrent protection. The 16-bit CCP module generates precise phase-control waveforms, while the analog comparator detects zero-cross events. The 7 KB program memory holds lookup tables and PID loops for motor control.
Được đề xuất
LED Display & Signage Drivers
Matrix LED displays and scrolling signs employ the PIC16LC65A-04I/PQ to multiplex row/column drivers via its 33 I/O. The 7 KB OTP holds font tables and animation sequences, while the 16-bit timer drives refresh interrupts. The SSP peripheral drives daisy-chained LED driver ICs at high speed. Industrial temperature rating supports outdoor signage.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC65A-04I/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 | PIC16LC65A-04/PQ | PIC16LC65A-04I/L | PIC16LC64A-04I/P | PIC16LC63A-04I/SS |
|---|---|---|---|---|---|
| Package | MQFP-44 (PQ) | MQFP-44 (PQ) - same | MQFP-44 (PQ) - same | DIP-40 - different | SSOP-28 - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 6 KB OTP | 4 KB OTP |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 22 |
| Max Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 3.0V-5.5V | 3.0V-5.5V | 3.0V-5.5V | 3.0V-5.5V | 3.0V-5.5V |
| Operating Temperature | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Unit Price (qty 1000) | $5.30 | $5.30 | $7.50 (windowed ceramic) | $5.10 | $4.80 |
Bảo phân biệt quan trọng
- Highest memory tier within PIC16LC6x family (vsPIC16LC63A-04I/SS)
- Industrial temperature range as standard (vsPIC16LC65A-04/PQ)
- 33 I/O pins - largest in legacy PIC16C6x portfolio (vsPIC16LC63A-04I/SS)
Ghi chú thiết kế
Place a 0.1uF decoupling capacitor as close as possible to each VDD pin (pins 13 and 42) and a bulk 10uF tantalum at the board-level supply entry. The PIC16LC65A has two VDD/VSS pairs (13/14 and 33/42/43) to reduce digital switching noise injection into analog circuits - both must be decoupled per Microchip layout guidelines. Brown-out reset configuration bits should be enabled for industrial applications to avoid undefined execution at low VDD.
The 44-pin MQFP has a 0.8 mm lead pitch and requires careful PCB land pattern design per IPC-7351. Use a solder mask-defined (SMD) pad rather than non-solder mask-defined (NSMD) for easier rework. Keep analog input traces (RA0-RA5, RE0-RE2) short and away from switching signals like the oscillator or PWM outputs to minimise ADC noise coupling. The exposed thermal pad is not present on this package; thermal management is passive only.
The OTP EPROM memory can be programmed only once - any bit-cell programmed becomes a logical 0 and cannot be electrically erased. Design teams commonly attempt to use OTP parts for prototype iteration and waste parts; Microchip strongly recommends using the PIC16F877A (flash) or PIC16LC65A-04I/L (windowed UV-erase) for development, then transition to the OTP PIC16LC65A-04I/PQ for production. Also note that configuration bits are part of the program memory and cannot be changed after programming without a new device.
The PIC16LC65A's parallel slave port (PSP) on port D shares the same pins with general I/O - ensure the PSP control bits (PSPMODE in TRISE) are cleared when PSP is not in use to prevent bus contention. The USART TX/RX pins (RC6/RC7) are shared with the synchronous clock/data functions; confirm the SPEN/CREN register bits match the desired serial mode. Watchdog Timer postscaler must be tuned to avoid spurious resets under heavy interrupt load.
Thông tin tuân thủ
Microchip PIC16LC65A-04I/PQ is RoHS compliant per Microchip product page. Not AEC-Q100 qualified; not recommended for safety-critical automotive subsystems without further qualification.
