PIC16C620-04I/SS - 8-bit EPROM MCU, 896B, 13 I/O, SSOP-20 | Microchip
MPN: PIC16C620-04I/SS ✗ Cuối đờiPIC16C620-04I/SS Tóm tắt
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (ROM/EPROM/Flash), I/O peripherals and often analog blocks. PIC microcontrollers use a Harvard architecture with separate program and data buses and a RISC instruction set, which enables deterministic instruction timing and very low power consumption. Within the PIC family, the PIC16C62x sits in the mid-range 14-bit instruction group, positioned between base-line PIC10/12/14 and enhanced mid-range PIC16F1xxx devices, and is historically used where simple control loops, comparator-based sensing, and OTP (one-time programmable) memory are acceptable.
Key features: 4 MHz oscillator input with 1 us instruction cycle; 35 single-word instructions; 8-bit timer/counter (TMR0) with 8-bit prescaler; watchdog timer with on-chip RC oscillator for reliable reset; programmable code protection; in-circuit serial programming (ICSP) via RB6/RB7; two on-chip analog comparators with programmable reference; power-on reset and brown-out detection.
Technical depth: The PIC16C620 implements a 14-bit instruction word with 8-bit data path, two file-select registers (FSR) for memory access, a 16-level hardware stack, and direct/indirect addressing. The 13 I/O pins share four ports (PORTA 5 pins, PORTB 8 pins) with individual direction control. The on-chip EPROM is one-time-programmable (OTP) at production time, making this part suitable for low-volume mature designs rather than field-upgradable products.
Typical applications: appliance control boards, security alarm panels, sensor signal conditioning with on-board comparators, automotive interior modules (non-safety), and simple motor-control glue logic. The wide 3-6V supply range and low power make it tolerant of unregulated rails in industrial environments.
Design consideration: Because the part is OTP EPROM (not Flash), firmware must be committed at programming time and cannot be re-flashed in application - select this device only for mature firmware with very low revision risk.
This page synthesizes current distributor pricing, verified drop-in alternatives from Microchip and competitors, and practical design notes compiled from public datasheets and reference designs - information engineers will not find in a single source elsewhere.
Bộ thay thế dễ dàng lắp đặt cho PIC16C620-04I/SS — 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 PIC16C620-04I/SS (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Core Architecture, Program Memory Type, RAM Size.
PIC16F628A-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F648A-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C620A-04I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C620T-04I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C620-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C620-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C620-04I/SS Tỷ lệ tối đa & tính chất điện
| Program Memory Type | EPROM (OTP) |
| Program Memory Size | 896 bytes (0.875 KB) |
| RAM Size | 80 bytes |
| EEPROM Size | 0 bytes (none on chip) |
| CPU Core | PIC16 / 14-bit RISC |
| CPU Architecture | 8-bit Harvard |
| Number of I/O Pins | 13 |
| Supply Voltage Range | 3.0 V to 6.0 V |
| Typical Operating Voltage | 5.0 V |
| Tần số xung maksimum | 4 MHz ("-04" speed grade) |
| Instruction Cycle Time | 1 us @ 4 MHz |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | SSOP-20 (5.3 mm body, 0.65 mm pitch) |
| Kiểu lắp đặt | Surface Mount |
| On-chip Comparators | 2 (with programmable reference) |
| Timers | 1 x 8-bit (TMR0) + WDT |
| A/D Converter | None (uses comparators) |
| In-Circuit Programming | ICSP (RB6/RB7) |
| Code Protection | Programmable |
| Cấp MSL | 1 (unlimited floor life) |
Cấu hình chân PIC16C620-04I/SS
| Chân 1 | RA2 — PORTA bit 2 (bidirectional digital I/O; analog comparator input) |
| Chân 2 | RA3 — PORTA bit 3 (bidirectional digital I/O; also /MCLR alternative) |
| Chân 3 | RA4 — PORTA bit 4 (bidirectional digital I/O; open-drain option) |
| Chân 4 | /MCLR — Master Clear (reset) input; tied to VDD through resistor |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — PORTB bit 0 (interrupt-on-change capable) |
| Chân 7 | RB1 — PORTB bit 1 (interrupt-on-change capable) |
| Chân 8 | RB2 — PORTB bit 2 (interrupt-on-change capable) |
| Chân 9 | RB3 — PORTB bit 3 (interrupt-on-change capable; low-voltage programming) |
| Chân 10 | RB4 — PORTB bit 4 (interrupt-on-change capable) |
| Chân 11 | RB5 — PORTB bit 5 (interrupt-on-change capable) |
| Chân 12 | RB6 — PORTB bit 6 (ICSP clock) |
| Chân 13 | RB7 — PORTB bit 7 (ICSP data) |
| Chân 14 | VSS — Ground reference (second ground pin) |
| Chân 15 | OSC2 — Oscillator output; RC or crystal connection |
| Chân 16 | OSC1 — Oscillator input; RC or crystal connection |
| Chân 17 | RA0 — PORTA bit 0 (analog comparator input) |
| Chân 18 | RA1 — PORTA bit 1 (analog comparator input) |
| Chân 19 | VSS — Ground reference (third ground pin) |
| Chân 20 | VDD — Positive supply (3.0-6.0 V) |
Ứng dụng tiêu biểu
PIC16C620-04I/SS phù hợp cho 6 Áp dụngs: Appliance Control Board, Security Alarm Panel, Industrial Sensor Signal Conditioning, Automotive Interior Module (Non-Safety), Battery Charger Control Logic, Simple Motor Control / PWM Driver.
Appliance Control Board
The PIC16C620-04I/SS fits appliance control boards where a sealed firmware, low-cost 8-bit controller drives relays, triacs, and indicator LEDs. The 896 bytes of OTP EPROM is sufficient for a fixed motor-sequence or heater-control algorithm, while the 13 I/O pins comfortably cover keypad scanning, status LEDs, and zero-cross detect. The on-chip analog comparators eliminate an external op-amp for temperature threshold detection via an NTC thermistor. Operating from a rectified 5 V supply, the device tolerates the wide 3.0-6.0 V range typical of unfiltered mains-derived rails.
Được đề xuất
Security Alarm Panel
The PIC16C620-04I/SS is well-suited to security alarm panels that require a sealed, code-protected firmware image plus simple analog sensing. The two on-chip comparators with programmable reference allow direct threshold detection on PIR sensor outputs and reed-switch debouncing without external analog ICs. The 13 I/O lines support keypad matrix, zone LEDs, and siren drivers, while the watchdog timer ensures reliable reset under ESD or power glitches common in alarm installations. Industrial -40 to +85 C operation tolerates garage and attic environments.
Được đề xuất
Industrial Sensor Signal Conditioning
For industrial sensor signal conditioning front-ends, the PIC16C620-04I/SS offers two on-chip analog comparators with programmable reference, useful for threshold detection on 4-20 mA loop signals or thermistor bridges. Its 4 MHz instruction rate handles 1 ms loop times for closed-loop heater control, and the wide 3.0-6.0 V supply tolerance allows direct connection to 24 V-rectified rails via a dropping resistor. The 80-byte RAM is sufficient for simple FIR filters; code protection prevents cloning of proprietary calibration tables.
Được đề xuất
Automotive Interior Module (Non-Safety)
Within non-safety automotive interior modules such as seat heaters, mirror adjusters, and lighting controllers, the PIC16C620-04I/SS provides cost-effective logic control. Its -40 to +85 C industrial temperature rating covers most cabin environments, and the watchdog timer plus brown-out reset protect against cranking transients when paired with an external TVS. OTP EPROM suits the high-volume cost targets typical of these applications where firmware is fully qualified and frozen.
Được đề xuất
Battery Charger Control Logic
In small battery charger designs - particularly for sealed lead-acid and NiMH packs - the PIC16C620-04I/SS implements charge state machine, timer, and termination logic. The on-chip comparators directly sense battery voltage against an internal reference, eliminating an external voltage monitor IC. With 13 I/O pins, the MCU handles MOSFET gate drive, LED status indication, and temperature sensor input. The 4 MHz clock supports accurate timing for CC-CV transition without an external RTC.
Được đề xuất
Simple Motor Control / PWM Driver
For brushed DC motor speed control or stepper sequencing in low-power applications, the PIC16C620-04I/SS generates PWM or step patterns using the TMR0 timer plus firmware. The 4 MHz clock supports 8-bit PWM at reasonable repetition rates for motor control, and the 13 I/O lines drive direction logic, enable, and fault feedback. Watchdog timer ensures recovery from stall-induced firmware hang. Code protection prevents unauthorized cloning of proprietary motor tuning tables in white-goods and HVAC equipment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C620-04I/SS — 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 | PIC16F628A-I/SS | PIC16F648A-I/SS | PIC16C620A-04I/SS | PIC16C620-04/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-20 | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Program Memory Type | OTP EPROM (896 B) | Flash (1024 words) | Flash (1024 words) | OTP EPROM (896 B) | OTP EPROM (896 B) |
| Program Memory Size | 896 bytes | 2048 bytes | 2048 bytes | 896 bytes | 896 bytes |
| RAM Size | 80 bytes | 224 bytes | 256 bytes | 80 bytes | 80 bytes |
| Max Clock Frequency | 4 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| Supply Voltage | 3.0-6.0 V | 2.0-5.5 V | 2.0-5.5 V | 3.0-6.0 V | 3.0-6.0 V |
| Temperature Range | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | -40 to +85 C (Industrial) | 0 to +70 C (Commercial) |
| On-chip EEPROM | None | 128 bytes | 128 bytes | None | None |
| USART | No | Yes (hardware) | Yes (hardware) | No | No |
| Lifecycle | Obsolete | Active | Active | Obsolete | Obsolete |
Bảo phân biệt quan trọng
- On-chip dual comparators with programmable reference (vsPIC16C620-04I/SO)
- Pin-compatible Flash upgrade path (vsPIC16F628A-I/SS)
- Industrial temperature range (vsPIC16C620-04/SS)
Ghi chú thiết kế
PIC16C620-04I/SS uses OTP EPROM - firmware is committed at programming time and cannot be rewritten. Do not select this part for new designs with any expected firmware revision; use the Flash-based PIC16F628A-I/SS or PIC16F648A-I/SS instead. Code-protect bits, once programmed, prevent re-reading the EPROM image, which is desirable for IP protection but creates a hard brick if firmware bugs are found post-release.
VDD must be decoupled with a 100 nF ceramic capacitor placed within 5 mm of the VDD pin (pin 20) plus a bulk 10 uF tantalum or aluminum at the supply entry. The PIC16C620 brown-out reset is factory-trimmed; verify the BOR trip voltage in the datasheet against the minimum regulator tolerance. For 5 V designs powered from a 7805 or similar, the wide 3.0-6.0 V tolerance allows direct connection without an LDO. Add a reverse-polarity protection diode at the bulk input.
OSC1/OSC2 traces should be short and isolated from switching signals; with a crystal oscillator, keep ground plane intact beneath the crystal and load capacitors, and place a guard ring around the oscillator area. The /MCLR pin (pin 4) requires a 10 kohm pull-up to VDD and a 100 nF cap to ground for in-circuit programming; ensure the ICSP connector (RB6/RB7 + /MCLR + VDD + VSS) does not share pins with loads that would prevent clean programming.
Thông tin tuân thủ
RoHS and REACH status not confirmed in the provided verified web data; the SSOP-20 package is generally available in both lead-free and lead-containing finishes depending on date code. Microchip publishes material compliance data on its product page. AEC-Q100 is not applicable - PIC16C620 is not qualified for automotive safety applications; use PIC16F628A-I/SS automotive-grade variants if required.
