PIC16C65A-04E/PT - 8-bit PIC MCU 7KB OTP 4MHz 44-TQFP | Microchip
MPN: PIC16C65A-04E/PT ✗ Cuối đờiPIC16C65A-04E/PT Tóm tắt
The PIC16C65A belongs to the 8-bit microcontroller (MCU) category, a class of single-chip microcontrollers that integrate CPU core, program memory, data RAM, peripherals and I/O into one package. Within that hierarchy the part sits under 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. PIC16C-series devices target low-cost, deterministic embedded control and remain popular where engineers need rapid interrupt response, simple instruction set, and decades of mature toolchain support from MPLAB IDE, MPASM assembler, and Hi-Tech C compilers.
Key features include 192 bytes of general-purpose RAM, 33 digital I/O pins, a programmable code-protection scheme, an 8-bit timer/counter, a watchdog timer, and on-chip power-on reset / brown-out reset circuitry. Peripherals include USART, parallel slave port, capture/compare/PWM modules, and synchronous serial port hardware. The architecture supports direct, indirect and relative addressing modes plus a hardware multiply assist, giving the PIC16C65A strong interrupt latency performance for real-time control.
Typical applications include industrial process control, instrumentation front-ends, motor control front-ends, building automation, low-power sensor hubs, and legacy embedded systems that require an OTP-programmed controller with extended-temperature qualification. Designers migrating from windowed EPROM parts often choose PIC16C65A-04E variants (E = extended temperature) for harsh-environment deployments.
When designing with this device, note that the '04' suffix denotes 4 MHz maximum clock and the 'E' suffix denotes the extended -40C to +125C temperature grade. The PT suffix marks the 44-pin TQFP (10x10 mm) package, which requires 1.0 mm PCB pad pitch. The PIC16C65A-04E/PT is OTP, so firmware must be fully validated before programming; windowed JW-package variants exist for prototype development.
This page synthesizes distributor stock, drop-in 44-TQFP pin-compatible alternatives, application circuit guidance, and lifecycle notes not found in the manufacturer datasheet alone, providing a single reference for engineers evaluating PIC16C65A-04E/PT for new designs or maintenance of legacy systems.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65A-04E/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 PIC16C65A-04E/PT (cùng hình factor và footprint) — khác nhau ở Operating Temperature Range, RAM Size, ADC, Package, Timers.
PIC16C64A-04E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64AT-04E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64AT-10E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C64AT-20E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04E/PT Tỷ lệ tối đa & tính chất điện
| Series | PIC16C |
| Core | 8-bit PIC16 RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 x 8 bytes |
| Number of I/O Pins | 33 |
| Supply Voltage (Vcc/Vdd) | 4 V to 6 V |
| Tần số xung maksimum | 4 MHz |
| Instruction Execution Time | 200 ns |
| Number of Instructions | 35 single-word |
| Khoảng nhiệt độ hoạt động | -40C to +125C (Extended, 'E' suffix) |
| Hộp | 44-pin TQFP (10x10 mm, 'PT' suffix) |
| Kiểu lắp đặt | Surface Mount |
| Peripherals | USART, PSP, SSP, PWM, 8-bit Timer, WDT, BOR |
Cấu hình chân PIC16C65A-04E/PT
| 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 / Timer 0 clock input |
| Chân 6 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / Slave select |
| Chân 7 | OSC1/CLKIN — Oscillator input / external clock |
| Chân 8 | OSC2/CLKOUT — Oscillator output |
| Chân 9 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator out / T1 clock in |
| Chân 10 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator in / CCP2 |
| Chân 11 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Chân 12 | RC3/SCK/SCL — Port C bit 3 / SPI SCK / I2C SCL |
| Chân 13 | RC4/SDI/SDA — Port C bit 4 / SPI SDI / I2C SDA |
| Chân 14 | RC5/SDO — Port C bit 5 / SPI SDO |
| Chân 15 | RC6/TX/CK — Port C bit 6 / USART TX / USART CK |
| Chân 16 | RC7/RX/DT — Port C bit 7 / USART RX / USART DT |
| Chân 17 | GND — Ground |
| Chân 18 | VDD — Positive supply |
| Chân 19 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 20 | RB1 — Port B bit 1 |
| Chân 21 | RB2 — Port B bit 2 |
| Chân 22 | RB3/PGM — Port B bit 3 / LVP programming |
| Chân 23 | RB4 — Port B bit 4 |
| Chân 24 | RB5 — Port B bit 5 |
| Chân 25 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 26 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 27 | RD0/PSP0 — Port D bit 0 / Parallel slave port bit 0 |
| Chân 28 | RD1/PSP1 — Port D bit 1 / Parallel slave port bit 1 |
| Chân 29 | RD2/PSP2 — Port D bit 2 / Parallel slave port bit 2 |
| Chân 30 | RD3/PSP3 — Port D bit 3 / Parallel slave port bit 3 |
| Chân 31 | RD4/PSP4 — Port D bit 4 / Parallel slave port bit 4 |
| Chân 32 | RD5/PSP5 — Port D bit 5 / Parallel slave port bit 5 |
| Chân 33 | RD6/PSP6 — Port D bit 6 / Parallel slave port bit 6 |
| Chân 34 | RD7/PSP7 — Port D bit 7 / Parallel slave port bit 7 |
| Chân 35 | RE0/RD — Port E bit 0 / Parallel port read strobe |
| Chân 36 | RE1/WR — Port E bit 1 / Parallel port write strobe |
| Chân 37 | RE2/CS — Port E bit 2 / Parallel port chip select |
| Chân 38 | VSS — Ground (TQFP analog/digital) |
| Chân 39 | VDD — Positive supply |
| Chân 40 | NC — Not connected |
| Chân 41 | NC — Not connected |
| Chân 42 | NC — Not connected |
| Chân 43 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 44 | NC — Not connected |
Ứng dụng tiêu biểu
PIC16C65A-04E/PT phù hợp cho 6 Áp dụngs: Industrial Process Control, Instrumentation Front-End, Motor Control Front-End, Building Automation Controller, Low-Power Sensor Hub, Legacy Embedded Systems Maintenance.
Industrial Process Control
The PIC16C65A-04E/PT fits industrial process control applications because of its 33 digital I/O lines, USART and parallel slave port peripherals, 192 bytes of RAM, and extended -40C to +125C temperature grade. The 7 KB OTP program memory holds typical PID-loop, valve-actuator, and sensor-multiplexing firmware. Deterministic 200 ns instruction execution at 4 MHz gives predictable interrupt latency for closed-loop control cycles, while on-chip power-on reset and brown-out reset protect against supply transients on factory floors.
Được đề xuất
Instrumentation Front-End
The PIC16C65A-04E/PT works as an instrumentation front-end controller thanks to its parallel slave port for high-speed ADC interfacing, 8-bit timer/counter for precise sample timing, and USART for digital telemetry output. Its 35 single-word instruction set keeps firmware compact within 7 KB of OTP, allowing scan routines, calibration tables, and LCD driver code on a single chip. The extended temperature rating supports bench, laboratory, and outdoor measurement environments where consumer-grade parts fail.
Được đề xuất
Motor Control Front-End
The PIC16C65A-04E/PT handles motor control front-end tasks such as PWM generation, Hall-sensor input decoding, and current-loop feedback processing. The on-chip capture/compare/PWM module generates brushed-DC and unipolar stepper drive waveforms, while 33 I/O lines accommodate multiple sensor inputs and bridge-driver control signals. Its deterministic 200 ns instruction execution at 4 MHz keeps PWM jitter within tolerance, and the extended -40C to +125C grade suits motor enclosures that experience thermal stress.
Được đề xuất
Building Automation Controller
The PIC16C65A-04E/PT fits building automation controllers such as HVAC zone controllers, lighting panels, and access-control nodes. Its 192 bytes of RAM holds scheduling tables and active-zone state machines, while the USART interfaces with central management networks. The PIC RISC architecture's deterministic interrupt response ensures clean timing for relay de-bouncing, occupancy-sensor polling, and TRIAC zero-crossing control, with 7 KB of OTP accommodating typical automation firmware.
Được đề xuất
Low-Power Sensor Hub
The PIC16C65A-04E/PT operates as a low-power sensor hub in remote monitoring applications where its 33 I/O lines multiplex multiple analog and digital sensors and its USART outputs telemetry. The 4 MHz clock keeps dynamic power dissipation low, and the 4-6 V supply range supports battery and bus-powered deployments. PIC16C-series OTP devices are well-suited to sensor hubs that must remain in service for decades without firmware updates.
Được đề xuất
Legacy Embedded Systems Maintenance
The PIC16C65A-04E/PT is used to maintain legacy embedded systems that were originally built on this exact part. Maintenance, repair, and overhaul activities benefit from the extended -40C to +125C temperature rating, proven PIC RISC architecture, and identical pinout across the PIC16C6X family. Engineers sustaining field-deployed equipment use the same development tools (MPLAB IDE, MPASM assembler, Hi-Tech C compiler) that were used when the system was originally designed.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65A-04E/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 | PIC16C64A-04E/PT | PIC16C64AT-04E/PT | PIC16C64AT-10E/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Core | 8-bit PIC16 RISC | 8-bit PIC16 RISC | 8-bit PIC16 RISC | 8-bit PIC16 RISC |
| Program Memory | 7 KB OTP (4K x 14) | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| RAM Size | 192 bytes | 128 bytes (-33%) | 128 bytes (-33%) | 128 bytes (-33%) |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 10 MHz (+150%) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| I/O Pins | 33 | 33 | 33 | 33 |
Bảo phân biệt quan trọng
- Highest RAM in 44-TQFP PIC16C6X family (vsPIC16C64A-04E/PT)
- More peripherals than PIC16C64A family (vsPIC16C64AT-04E/PT)
- Lower maximum clock than newer T-suffix variants (vsPIC16C64AT-10E/PT)
Ghi chú thiết kế
PIC16C65A-04E/PT is OTP (one-time programmable), so any firmware bug becomes permanent after programming. Verify code in a windowed PIC16C65A-JW prototype before committing to OTP. Also note: the /PT (TQFP) pinout differs from the /P (PDIP) variant - never assume pin numbers are interchangeable between the two packages. Confirm VDD/VSS pair count: the 44-TQFP has two VDD and two VSS pins, all of which must be decoupled for stable operation.
Place a 100 nF decoupling capacitor close to each VDD/VSS pair (4 total on 44-TQFP) plus a single 10 uF bulk capacitor on the supply rail. The PIC16C65A draws up to 25 mA at 4 MHz / 5 V; reserve 50 mA supply headroom for I/O switching transients. For battery-powered designs, use the PIC16C65A's SLEEP instruction and watchdog timer to drop quiescent current below 4 uA typical. Brown-out reset should be enabled in configuration fuses for industrial deployments.
Route the 4 MHz crystal traces symmetrically with short, equal-length paths and a ground guard ring to minimize EMI. Place the MCLR pull-up (typically 10 kOhm) within 5 mm of pin 1 to avoid spurious resets. The 33 I/O lines can drive up to 20 mA per pin (sink/source, but not simultaneously); cluster high-current drivers (relays, LEDs) near the supply pins to minimize ground bounce. Keep analog inputs RA0-RA5 away from switching signals for clean ADC readings.
Thông tin tuân thủ
RoHS/REACH status must be verified from lot-specific manufacturer documentation because PIC16C65A-04E/PT was released before industry-wide RoHS adoption. The PT (TQFP) lead-free finish is typically compliant but date-code sensitive.
