PIC16C662-04E/P - 4MHz 8-bit OTP MCU, 7KB | Microchip
MPN: PIC16C662-04E/P ✓ Hoạt độngPIC16C662-04E/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one die, enabling compact embedded control in appliances, automotive modules, and industrial subsystems. The PIC16C662 belongs to the mid-range PIC architecture, sitting hierarchically between 8-bit microcontrollers and the broader semiconductor / embedded-processing category.
Key differentiating features include a 14-bit instruction word, only 35 single-word instructions (most executing in 200 ns), integrated Brown-out Detect/Reset, Power-On Reset (POR), Watchdog Timer (WDT), and LED drive capability on selected ports. The RISC Harvard bus architecture and 8-bit data path deliver deterministic interrupt response for real-time control.
Operating from 4.0 V to 6.0 V (4.5 V to 5.5 V typical), the device supports up to 4 MIPS throughput. The OTP program memory makes each unit field-programmable once, ideal for low-to-medium volume production where mask-ROM volume economics are unattractive. Peripherals include an 8-bit timer/counter, capture/compare/PWM, and a synchronous serial port (SSP).
Typical applications include industrial automation controllers, automotive body and climate modules (extended temp grade), appliance control boards, and consumer-electronics interfaces. The 33 I/O pins comfortably drive keypads, LED arrays, and small relays.
Designers should note that the OTP memory cannot be erased, so firmware must be fully validated on a windowed or Flash equivalent before final programming. Decoupling capacitors (0.1 uF) must be placed within 5 mm of VDD/VSS pins, and unused I/O should be configured as outputs to minimize current draw.
This page synthesizes distributor pricing, same-brand drop-in alternatives from the PIC16C6x family, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C662-04E/P — 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 PIC16C662-04E/P (cùng hình factor và footprint) — khác nhau ở Package, Program Memory, Instruction Set, Core Architecture, Data RAM.
PIC16C662-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F662-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F74-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662-10E/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F884-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662-04E/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC (Mid-Range) |
| Instruction Word | 14-bit |
| Tần số xung maksimum | 4 MHz |
| Program Memory | 7 KB (4K x 14) OTP |
| Number of I/O Pins | 33 |
| Supply Voltage Range | 4.0 V to 6.0 V (4.5 V to 5.5 V typical) |
| Instruction Count | 35 |
| Instruction Cycle Time | 200 ns (single-cycle), 400 ns (branch) |
| Peripherals | Brown-out Reset, POR, WDT, LED driver, Timer, CCP, SSP |
| Hộp | 40-pin PDIP (0.600" / 15.24 mm through-hole) |
| Kiểu lắp đặt | Through-Hole |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (extended grade "E") |
| Temperature Grade | Automotive / Extended |
| ROM Type | OTP (One-Time-Programmable) |
Cấu hình chân PIC16C662-04E/P
| 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 — Port A bit 2 / analog input 2 |
| Chân 5 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / voltage reference |
| Chân 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SSP slave select |
| Chân 8 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Chân 9 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Chân 10 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator out / clock in |
| Chân 11 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator in / CCP2 |
| Chân 12 | RC2/CCP1 — Port C bit 2 / Capture Compare PWM 1 |
| Chân 13 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 14 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 15 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 16 | RC6/TX/CK — Port C bit 6 / UART TX / clock |
| Chân 17 | RC7/RX/DT — Port C bit 7 / UART RX / data |
| Chân 18 | RD0 — Port D bit 0 |
| Chân 19 | RD1 — Port D bit 1 |
| Chân 20 | RD2 — Port D bit 2 |
| Chân 21 | RD3 — Port D bit 3 |
| Chân 22 | RD4 — Port D bit 4 |
| Chân 23 | RD5 — Port D bit 5 |
| Chân 24 | RD6 — Port D bit 6 |
| Chân 25 | RD7 — Port D bit 7 |
| Chân 26 | RE0/RD — Port E bit 0 / read control |
| Chân 27 | RE1/WR — Port E bit 1 / write control |
| Chân 28 | RE2/CS — Port E bit 2 / chip select |
| Chân 29 | VSS — Ground reference |
| Chân 30 | VDD — Positive supply voltage |
| Chân 31 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 32 | RB1 — Port B bit 1 |
| Chân 33 | RB2 — Port B bit 2 |
| Chân 34 | RB3 — Port B bit 3 |
| Chân 35 | RB4 — Port B bit 4 |
| Chân 36 | RB5 — Port B bit 5 |
| Chân 37 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 38 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 39 | NC — Not connected (per datasheet) |
| Chân 40 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16C662-04E/P phù hợp cho 6 Áp dụngs: Automotive Body Control Modules, Industrial Automation Controllers, Appliance Control Boards, Consumer Electronics Interface Panels, HVAC and Climate Control, Security and Access Control Panels.
Automotive Body Control Modules
The PIC16C662-04E/P's extended -40 C to +125 C temperature grade and automotive qualification make it well suited to body-electronics ECUs that drive mirrors, locks, and lighting. With 33 digital I/O, the MCU can scan keypads, multiplex LEDs, and read switches directly, while the on-chip WDT and Brown-out Reset handle the noisy 12 V automotive environment. The 200 ns instruction cycle supports debounce and PWM tasks in real time. Place 0.1 uF decoupling close to VDD/VSS and use optocouplers for any 12 V load switching.
Được đề xuất
Industrial Automation Controllers
In industrial PLCs and sensor-interface boards, the PIC16C662-04E/P provides 33 I/O lines that can drive relays, read limit switches, and interface 4-20 mA loops through external conditioning. The OTP memory locks firmware to prevent unauthorized field modification, while the RISC core executes deterministic scan loops within microseconds. Brown-out detection protects against the voltage sags common on long factory wiring runs. Use the CCP and SSP peripherals for PWM valve control and SPI sensor polling respectively.
Được đề xuất
Appliance Control Boards
White-goods control boards (washers, dishwashers, ovens) benefit from the PIC16C662-04E/P's integrated LED drive, 33 I/O, and timer/counter peripherals that handle motor triac drive, user-panel scanning, and temperature sensor polling. The 4 MHz clock keeps EMI low compared to faster MCUs, simplifying CE/UL compliance. The 5 V supply envelope matches common appliance power rails. OTP memory prevents firmware tampering and ensures field units ship with locked behavior.
Được đề xuất
Consumer Electronics Interface Panels
User-interface panels for AV receivers, HVAC thermostats, and home automation gateways use the PIC16C662-04E/P to scan keypads, drive 7-segment or matrix LED displays, and bridge to a host processor via UART or SPI. The PIC's 35-instruction RISC core is easy to program in assembly or C, accelerating time-to-market for cost-sensitive consumer products. The 33 I/O accommodate 4x4 keypads plus dedicated LED sink lines without external drivers.
Được đề xuất
HVAC and Climate Control
The PIC16C662-04E/P's extended temperature grade suits HVAC controllers exposed to attic and outdoor-cabinet conditions. The MCU can multiplex temperature inputs from NTC thermistors, drive triac-based fan speed control via PWM (CCP module), and communicate with indoor units over UART. OTP memory locks calibrated firmware and protects against unauthorized reflash. Brown-out Reset is essential for handling compressor inrush that sags the supply rail.
Được đề xuất
Security and Access Control Panels
Door controllers, alarm panels, and access-control keypads use the PIC16C662-04E/P to scan keypads, drive buzzers and LEDs, and supervise reed-switch zones. The WDT catches firmware lockups, while OTP memory ensures the security logic cannot be reflashed in the field. The 4 MHz clock gives 5 ms instruction loops that comfortably debounce mechanical keypresses without missing events. Use external EEPROM or serial FRAM for event-log persistence.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C662-04E/P — 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 | PIC16C662-04I/P | PIC16F662-I/P | PIC16F74-I/P | PIC16C662-10E/P | PIC16F884-E/P |
|---|---|---|---|---|---|---|
| Package | 40-PDIP | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 10 MHz | 20 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB Flash | 4 KB Flash | 7 KB OTP | 7 KB Flash |
| Memory Type | OTP | OTP | Flash | Flash | OTP | Flash |
| Temperature Grade | -40 to +125 C (Extended) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +125 C (Extended) | -40 to +125 C (Extended) |
| Number of I/O Pins | 33 | 33 | 33 | 33 | 33 | 36 |
| Supply Voltage | 4.0 to 6.0 V | 4.0 to 6.0 V | 2.0 to 5.5 V | 2.0 to 5.5 V | 4.0 to 6.0 V | 2.0 to 5.5 V |
| Brown-out Reset | Yes | Yes | Yes | Yes | Yes | Yes |
| Watchdog Timer | Yes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Extended automotive temperature grade in standard SKU (vsPIC16C662-04I/P)
- 7 KB OTP program memory with 33 I/O at 4 MHz clock grade (vsPIC16F74-I/P)
- Same-brand drop-in availability across OTP and Flash variants (vsPIC16F884-E/P)
Ghi chú thiết kế
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 30) and a bulk 10 uF electrolytic near the IC. The PIC16C662-04E/P can source/sink up to 25 mA per pin, but the total port current is limited; avoid tying multiple LEDs to the same VDD rail without current-limiting resistors. Route the MCLR line directly to the reset circuit with a 10 kohm pull-up to VDD.
Estimated: at 4 MHz clock and VDD = 5.0 V, supply current is typically 2-5 mA with all I/O floating. Adding LED loads at 10 mA total and analog peripherals active can push this to ~15 mA. The extended temperature grade means derate supply current at +125 C by ~20 percent. Always enable Brown-out Reset to protect Flash/OTP integrity during voltage sags.
Do not leave unused I/O pins floating - configure them as outputs or enable the internal weak pull-ups to prevent shoot-through and spurious interrupts. The MCLR pin must NOT be left floating; tie through a resistor to VDD. When programming OTP, ensure VPP rises monotonically to 13 V within the datasheet-specified rise time, or the programming cycle will fail silently and leave the part unprogrammed.
Thông tin tuân thủ
RoHS and REACH status not explicitly stated in provided data. Lead-free assumed for PDIP package family. AEC-Q100 not separately qualified - extended temp grade "/E" suffix is automotive-style but not formal AEC-Q100.
