PIC16C620-20E/SO - 8-Bit 20MHz OTP MCU, 18-SOIC | Microchip
MPN: PIC16C620-20E/SO ✓ Hoạt độngPIC16C620-20E/SO Tóm tắt
What is an 8-bit OTP microcontroller? An OTP microcontroller is a single-chip computer built around an 8-bit data path, using one-time programmable non-volatile memory to store firmware; once programmed, the code cannot be erased, which makes OTP parts cost-optimized for high-volume, fixed-function products where field firmware updates are not required. Within the broader semiconductor taxonomy, OTP MCUs sit beneath the microcontroller umbrella, alongside flash-based MCUs, and below the integrated-circuit hierarchy that includes logic ICs, interface ICs, and DSPs.
Key features of the PIC16C620-20E/SO include an instruction set of only 35 single-word instructions, two 8-bit timer/counters with 8-bit programmable prescalers, a Watchdog Timer with its own on-chip RC oscillator, an analog comparator with programmable on-chip voltage reference, and 13 CMOS-compatible bidirectional I/O pins with high-current sink/source capability. The device supports a wide 2.5 V to 6.0 V operating voltage range and is qualified to the Automotive temperature grade (-40 C to +125 C), making it suitable for harsh-environment designs.
Architecturally, the PIC16C620-20E/SO uses a RISC Harvard architecture with separate code and data buses, an 8-level deep hardware stack, and direct, indirect, and relative addressing modes. The enhanced PIC16C62x core adds internal/external oscillator selection and a higher 20 MHz throughput compared to the 4 MHz base PIC16C620, giving it four times the compute headroom while remaining pin-compatible with lower-speed variants in the same 18-pin SOIC footprint.
Typical applications include automotive body controllers, appliance control boards, simple sensor interfaces, and battery-powered consumer devices. The integrated analog comparator and programmable voltage reference allow direct connection of resistive sensors without an external op-amp.
When designing with this part, note that the device operates from a 2.5 V to 6.0 V rail; if the application needs in-circuit reprogramming, choose a flash-based PIC16F62x instead, but for cost-sensitive high-volume production the OTP version remains the most economical choice.
Bộ thay thế dễ dàng lắp đặt cho PIC16C620-20E/SO — 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 PIC16C620-20E/SO (cùng hình factor và footprint) — khác nhau ở RoHS Status, Program Memory Size, Program Memory Type, Package, RAM Size.
PIC16C620-20/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
PIC16C620-04I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620-20/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620A-20E/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620-04/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620-20E/SO Tỷ lệ tối đa & tính chất điện
| Core | 8-bit PIC16C62x RISC |
| Architecture | Harvard (separate code/data buses) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 896 bytes (512 x 14 words) |
| Data RAM | 80 bytes |
| Data EEPROM | None (not present on this family) |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns (single-cycle, except branches 400 ns) |
| Instruction Set Size | 35 instructions |
| Hardware Stack | 8 levels |
| Operating Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 13 CMOS bidirectional |
| Timers | 2 x 8-bit with 8-bit programmable prescaler |
| Watchdog Timer | Yes, dedicated on-chip RC oscillator |
| Analog Comparator | 1 with programmable on-chip voltage reference |
| Internal RC Oscillator | 8 MHz calibrated, +/-1% typical accuracy |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (Automotive grade) |
| Hộp | 18-SOIC (7.50 mm body width) |
| Kiểu lắp đặt | Surface Mount |
| Lead-Free / RoHS | Lead-free finish, RoHS-compliant |
Cấu hình chân PIC16C620-20E/SO
| Chân 1 | RA2 — Bidirectional I/O / analog comparator reference input |
| Chân 2 | RA3 — Bidirectional I/O / analog comparator reference output |
| Chân 3 | RA4 — Bidirectional I/O / TOCKI (Timer0 clock input) |
| Chân 4 | RA5/MCLR/VPP — Bidirectional I/O / Master Clear reset (active-low) / Programming voltage input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O / external interrupt input |
| Chân 7 | RB1 — Bidirectional I/O |
| Chân 8 | RB2 — Bidirectional I/O |
| Chân 9 | RB3 — Bidirectional I/O |
| Chân 10 | RB4 — Bidirectional I/O |
| Chân 11 | RB5 — Bidirectional I/O |
| Chân 12 | RB6 — Bidirectional I/O |
| Chân 13 | RB7 — Bidirectional I/O |
| Chân 14 | VDD — Positive supply voltage (2.5 V to 6.0 V) |
| Chân 15 | OSC1/CLKIN — External oscillator input or crystal pin 1 |
| Chân 16 | OSC2/CLKOUT — External oscillator output or crystal pin 2 / Fosc/4 output in RC mode |
| Chân 17 | RA0 — Bidirectional I/O / analog comparator non-inverting input |
| Chân 18 | RA1 — Bidirectional I/O / analog comparator inverting input |
Ứng dụng tiêu biểu
PIC16C620-20E/SO phù hợp cho 6 Áp dụngs: Automotive Body and Chassis Controllers, Appliance Control Boards, Battery-Powered Sensor Nodes, Industrial Sensor Interfaces, Consumer Remote Controls and IR Receivers, LED Drivers and Display Multiplexers.
Automotive Body and Chassis Controllers
The PIC16C620-20E/SO is well suited to automotive body and chassis controllers because of its Automotive temperature grade (-40 C to +125 C), 2.5 V to 6.0 V operating range, and 13 high-current CMOS I/O capable of sourcing or sinking 25 mA per pin. With 896 bytes of OTP program memory and 80 bytes of RAM, the part can host a simple state machine for tasks such as seat-position memory, mirror-fold, wiper-interval, or central-locking control. The on-chip analog comparator plus programmable voltage reference allows direct conditioning of a wiper-park or door-switch input without an external op-amp. Its RISC core at 20 MHz finishes a typical control loop in tens of microseconds, leaving plenty of margin for polled I/O handling.
Được đề xuất
Appliance Control Boards
In white-goods and small appliance control boards - washing machines, dishwashers, microwave ovens, and induction cooktops - the PIC16C620-20E/SO offers enough compute and I/O to replace a handful of 555 timers and discrete logic. Its two 8-bit timers with 8-bit prescalers handle PWM generation for motor-speed control, while the 13 I/O pins drive relay coils, triac gates, and status LEDs directly. The OTP-only nature suits fixed-function appliances where code changes during the product life would be counterproductive, and the 200 ns instruction cycle is more than fast enough for polled keypad-debounce and segment-display multiplexing.
Được đề xuất
Battery-Powered Sensor Nodes
For battery-powered sensor nodes such as remote thermostats, occupancy sensors, and irrigation controllers, the PIC16C620-20E/SO provides a useful combination of low-cost OTP, internal RC oscillator calibration to +/-1% typical, and a hardware Watchdog Timer that runs from its own internal RC oscillator and continues to operate during SLEEP. The 8 MHz internal oscillator eliminates the need for an external crystal, saving both cost and PCB area; the 25 mA I/O drive capability can wake up an RF transmitter or piezo buzzer directly. Programming in pure assembly or C with the MPLAB XC8 free compiler keeps the firmware footprint inside the 896-byte OTP limit for typical sensor applications.
Được đề xuất
Industrial Sensor Interfaces
Industrial sensor interfaces - simple current-loop, 4-20 mA loop-powered, or voltage-divider signal conditioners - benefit from the PIC16C620-20E/SO on-chip analog comparator and programmable voltage reference, which eliminate the need for a separate comparator IC in low-side current-shunt monitoring or threshold detection. The 2.5 V to 6.0 V supply range is compatible with industrial 24 V bus systems stepped down to 5 V via an LDO. The 13 I/O pins are CMOS-compatible and can drive opto-isolators, status LEDs, and small relays directly, while the Watchdog Timer protects against lockups in electrically noisy factory environments.
Được đề xuất
Consumer Remote Controls and IR Receivers
Consumer remote controls, IR-to-UART bridges, and simple receiver boards benefit from the PIC16C620-20E/SO 20 MHz throughput, which easily demodulates a 38 kHz IR carrier and decodes common RC5 or NEC protocols in software. The internal 8 MHz RC oscillator at +/-1% calibration is accurate enough for carrier-frequency tuning without a crystal, and the two 8-bit timers can be used as one for carrier generation and one for protocol timing. With 896 bytes of OTP, the part can host both the decoder and a small lookup table for button-to-command mapping.
Được đề xuất
LED Drivers and Display Multiplexers
LED drivers and small dot-matrix or 7-segment display multiplexers benefit from the PIC16C620-20E/SO high-current 25 mA I/O drive, which can sink LED current directly without series resistors in many low-current indicator applications. The two timers support programmable refresh rates without CPU intervention, leaving the 8-bit core free to handle higher-level logic. With 13 I/O pins the part can drive up to a 3x5 matrix display or up to 6 digits of 7-segment plus a decimal point each, suiting status panels, fan tachometers, or numeric keypads.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C620-20E/SO — 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 | PIC16C620-20/SO | PIC16C620-04I/SO | PIC16C620A-20E/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (7.50 mm) | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| Program Memory (OTP) | 896 bytes (512 x 14) | 896 bytes (512 x 14) | 896 bytes (512 x 14) | 896 bytes (512 x 14) |
| Data RAM | 80 bytes | 80 bytes | 80 bytes | 80 bytes |
| Operating Voltage | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V |
| Internal RC Oscillator | Yes (4 MHz or 8 MHz calibrated) | No | Yes (Industrial grade) | Yes (4 MHz or 8 MHz calibrated) |
| Brown-out Reset | No (legacy silicon) | No | No | Yes |
| Temperature Grade | Automotive -40C to +125C | Commercial 0C to +70C (base -20 part) | Industrial -40C to +85C | Automotive -40C to +125C |
| I/O Pins | 13 | 13 | 13 | 13 |
Bảo phân biệt quan trọng
- Enhanced core with internal calibrated RC oscillator (vsPIC16C620-20/SO)
- Successor silicon with brown-out reset for noisy supplies (vsPIC16C620-04I/SO)
- Automotive temperature grade as standard (vsPIC16C620-20/SO (commercial grade))
Ghi chú thiết kế
PIC16C620-20E/SO operates from 2.5 V to 6.0 V. Estimated: at 20 MHz and 6 V supply, the device draws about 5-10 mA active and around 1-5 uA in SLEEP mode. Add a 100 nF decoupling capacitor directly between VDD (pin 14) and VSS (pin 5), and bulk-decouple VDD with a 4.7 uF tantalum or 10 uF ceramic if the supply is shared with relays. The MCLR pin should be tied to VDD through a 10 kohm resistor for normal operation and exposed as a test pad for in-circuit programming with the MPLAB PM3.
Place the 18-SOIC with its 7.50 mm body so the crystal or resonator is within 5 mm of OSC1 (pin 15) and OSC2 (pin 16). Keep digital switching traces (relay drivers, PWM outputs) at least 3 mm away from the oscillator loop and the analog comparator pins (RA0-RA3) to avoid crosstalk into the comparator threshold. A ground plane under the SOIC body is recommended, with the VSS pin tied to that plane with a single via or short trace to keep the return path clean.
The MCLR pin (RA5/MCLR/VPP) is multiplexed with GPIO. If RA5 is used as a GPIO, never drive it low during programming or the device will reset and exit programming mode. The OTP memory is one-time programmable only - firmware bugs cannot be patched, so validate with a flash-based PIC16F620 prototype before committing to the OTP PIC16C620-20E/SO for production. Brown-out reset is NOT available on the -20E silicon; for designs with a noisy automotive supply, choose the PIC16C620A-20E/SO instead.
Thông tin tuân thủ
RoHS-compliant lead-free finish per Microchip product page. The PIC16C620 family predates formal AEC-Q100 qualification; for new automotive designs requiring AEC-Q100 documentation, use the PIC16F62x or PIC18 families instead. REACH status is reported as compliant by distributors.