PIC16LC620-04I/P - 4MHz, 8-Bit CMOS MCU, 896B OTP | Microchip
MPN: PIC16LC620-04I/P ✓ Hoạt độngPIC16LC620-04I/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (ROM/RAM), and programmable I/O peripherals. The PIC16LC620 belongs to the PIC16C family, which sits within the broader taxonomy: PIC16C -> PIC16 family -> 8-bit PIC microcontrollers -> PIC microcontrollers -> microcontrollers -> embedded processors -> semiconductors. The PIC16C series uses a RISC-based Harvard architecture with only 35 single-cycle instructions (200 ns at 20 MHz input, or 1 us at 4 MHz), enabling deterministic execution suitable for real-time control applications.
Key features include 13 I/O pins, 80 bytes of RAM, an 8-bit timer/counter (TMR0), a watchdog timer, power-on reset, power-saving SLEEP mode, and a 14-bit wide instruction word with an 8-bit wide data path. The two-level hardware stack supports subroutine nesting, while direct, indirect, and relative addressing modes provide flexible memory access for C and assembly development. The device operates across the industrial temperature range and integrates an internal RC oscillator option to reduce external component count.
The PIC16LC620's low-voltage CMOS process allows operation down to 2.5 V, an advantage versus standard 5 V-only PIC16C620 parts. This makes it well suited to portable instrumentation, 3 V battery systems, and energy-harvesting nodes. The architecture supports in-circuit serial programming (ICSP) through the RB6/RB7 pins, enabling field updates and factory calibration without removing the device from the board.
Typical applications include consumer appliance control, low-end remote-control transmitters, LED driver controllers, simple sensor interfaces, automotive interior sub-modules, and battery-powered embedded subsystems. Designers select the PIC16LC620 when they need deterministic 8-bit performance with the flexibility of OTP memory for moderate-volume production.
When designing with the PIC16LC620-04I/P, note that the '04' speed grade denotes 4 MHz operation versus the 20 MHz '20' grade. Verify that the MCLR, VDD, VSS, OSC1/OSC2, and ICSP pin assignments match your existing layout before substituting a higher-speed variant, as pin-compatible PIC16LC620A or PIC16F628 drop-ins may require firmware changes due to enhanced peripheral register maps.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes drawn from the Microchip datasheet and reference designs - information not consolidated on any single manufacturer or distributor page.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC620-04I/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 PIC16LC620-04I/P (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Program Memory Size, Core Architecture, Program Memory Type.
PIC16LC620-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC620-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC620A-04I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F628-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F870-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC58B-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC620-04I/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Series | PIC16C (low-power 'LC' CMOS variant) |
| Program Memory Size | 896 B (512 x 14 words), OTP |
| RAM Size | 80 B |
| EEPROM Size | None (OTP only) |
| Tần số xung maksimum | 4 MHz |
| Instruction Cycle Time | 1 us at 4 MHz (200 ns at 20 MHz input equivalent architecture) |
| Supply Voltage Range | 2.5 V to 6.25 V |
| I/O Pins | 13 |
| Timers | 1 x 8-bit (TMR0) |
| Watchdog Timer | Yes |
| Number of Instructions | 35 (single-cycle, except branches) |
| Stack Depth | 2 levels (hardware) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial, 'I' suffix) |
| Hộp | 18-pin PDIP (0.300 inch / 7.62 mm) |
| Kiểu lắp đặt | Through-Hole |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| ICSP (In-Circuit Serial Programming) | Yes (via RB6/RB7) |
| Power-on Reset | Yes |
| Trạng thái RoHS | Compliant (per distributor listings) |
Cấu hình chân PIC16LC620-04I/P
| Chân 1 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| Chân 2 | RA0 — PORTA bit 0 (digital I/O, analog-capable on A variant) |
| Chân 3 | RA1 — PORTA bit 1 (digital I/O) |
| Chân 4 | RA2 — PORTA bit 2 (digital I/O) |
| Chân 5 | RA3 — PORTA bit 3 (digital I/O) |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain on some revisions) |
| Chân 7 | VSS — Ground reference |
| Chân 8 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 9 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Chân 10 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 11 | RB1 — PORTB bit 1 |
| Chân 12 | RB2 — PORTB bit 2 |
| Chân 13 | RB3 — PORTB bit 3 (interrupt-on-change capable) |
| Chân 14 | RB4 — PORTB bit 4 (interrupt-on-change capable) |
| Chân 15 | RB5 — PORTB bit 5 (interrupt-on-change capable) |
| Chân 16 | RB6 — PORTB bit 6 / ICSP clock (interrupt-on-change capable) |
| Chân 17 | RB7 — PORTB bit 7 / ICSP data (interrupt-on-change capable) |
| Chân 18 | VDD — Positive supply voltage (2.5 V to 6.25 V) |
Ứng dụng tiêu biểu
PIC16LC620-04I/P phù hợp cho 7 Áp dụngs: Consumer Appliance Control, Remote Control Transmitters, LED Lighting Drivers, Battery-Powered Sensor Nodes, Automotive Interior Sub-Modules, Industrial Control Panels, Simple Timer / Counter Modules.
Consumer Appliance Control
The PIC16LC620-04I/P fits consumer appliance control (washing machines, microwave user interfaces, rice cookers) because its 13 I/O pins are sufficient for keypad scan, LED/LCD drive, and relay/buzzer outputs, while the 4 MHz instruction cycle delivers deterministic response under 1 us. The 2.5-6.25 V supply range accepts direct 3-cell battery or rectified-5 V rails, eliminating level shifters. OTP memory at 896 B (512 x 14) holds typical appliance state machines plus a small UI lookup table. PIC's 35-instruction RISC core simplifies assembly coding for cost-sensitive consumer production.
Được đề xuất
Remote Control Transmitters
The PIC16LC620-04I/P is well suited to IR/RF remote-control transmitters where low standby current and small code footprint matter. SLEEP mode plus watchdog wake-up let a coin-cell battery last years, and 896 B of OTP program memory easily accommodates RC5/SIRC/NEC encoder tables. The 13 I/O pins drive up to a 4x4 keypad matrix plus a status LED and IR emitter transistor. Industrial -40 to +85 C temperature grade handles garage-door and outdoor remote environments. The 'LC' 2.5 V minimum enables 2 x AA alkaline supply without boost conversion.
Được đề xuất
LED Lighting Drivers
In LED lighting driver MCUs, the PIC16LC620-04I/P provides timing control and current-loop feedback without the cost of a dedicated LED driver IC. Its 8-bit TMR0 plus software PWM generate dimming signals; 13 I/O pins interface with high-side MOSFET gates, photodiode feedback, and thermal sensors. The 2.5-6.25 V supply range simplifies integration with constant-current LED strings at 3.3 V or 5 V rails. OTP memory locks the dimming curve and thermal fold-back algorithm at production time, preventing field tampering.
Được đề xuất
Battery-Powered Sensor Nodes
For battery-powered sensor nodes (temperature, humidity, contact closure), the PIC16LC620-04I/P's low-voltage CMOS process and SLEEP-mode current suit multi-year coin-cell operation. 13 I/O pins connect to a sensor front-end, an SPI/I2C ADC, and a low-power radio enable line. The 80 B RAM is sufficient for buffered sensor samples before burst transmission. Industrial -40 to +85 C temperature grade covers outdoor and cold-chain deployments. The 4 MHz clock grade balances ADC sample-rate headroom with active-mode current consumption.
Được đề xuất
Automotive Interior Sub-Modules
The PIC16LC620-04I/P appears in cost-sensitive automotive interior sub-modules such as mirror controls, simple HVAC mode switches, and seat-position indicators. Its 13 I/O pins handle switch matrix scan and LED/buzzer feedback. The industrial -40 to +85 C temperature grade meets cabin requirements; for under-hood or engine-bay locations, the PIC16LC620-04E/P extended-temperature variant is required. OTP memory locks the calibration and prevents dealer reflash. Watchdog timer plus power-on reset keep the module reliable across cranking transients.
Được đề xuất
Industrial Control Panels
In industrial control panels and HMI keypads, the PIC16LC620-04I/P scans a 4x4 matrix and drives 7-segment displays or status LEDs through its 13 I/O pins. The 4 MHz instruction cycle handles debounce and key-repeat logic without software overhead. OTP memory stores panel configuration and ID strings, simplifying end-of-line programming. The 2.5-6.25 V supply accepts 24 V industrial bus power through a simple linear regulator. The 'I' industrial temperature grade covers factory-floor ambient ranges from -40 to +85 C.
Được đề xuất
Simple Timer / Counter Modules
The PIC16LC620-04I/P excels in standalone timer/counter modules (laundry delay relays, irrigation controllers, parking-meter timers) where its 8-bit TMR0 with prescaler and watchdog form the entire timing engine. 13 I/O pins drive the relay, pushbutton input, status LED, and serial debug output. The 4 MHz instruction cycle provides sub-millisecond timing resolution, sufficient for minute-to-day scheduling via software counters. The 'LC' 2.5 V minimum suits 3 V battery backup across brownout events.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC620-04I/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 | PIC16LC620-04E/P | PIC16LC620A-04I/P | PIC16F628-04I/P | PIC16LC58B-04/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP (0.300 inch) | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Program Memory | 896 B (512 x 14) OTP | 896 B (512 x 14) OTP | 896 B (512 x 14) OTP | 2 K x 14 Flash | 2 K x 12 OTP |
| RAM Size | 80 B | 80 B | 80 B | 224 B | 73 B |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz (20 MHz grade also exists) | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 3.0 V to 5.5 V | 2.5 V to 6.25 V |
| Operating Temperature Range | -40 C to +85 C (industrial) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| I/O Pins | 13 | 13 | 13 | 16 | 12 |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | Flash | OTP EPROM |
| Internal Peripherals | TMR0, WDT, POR | TMR0, WDT, POR | TMR0, WDT, POR, CCP | TMR0/1/2, WDT, USART, CCP/PWM, POR | TMR0, WDT, POR |
Bảo phân biệt quan trọng
- Low-voltage 2.5 V operation versus standard PIC16C620's 3.0 V minimum (vsPIC16C620-04I/P)
- Extended industrial temperature range across -40 to +85 C (vsPIC16LC620-04/P (commercial 0 to +70 C))
- Pin-compatible Flash upgrade path (vsPIC16F628-04I/P)
- Silicon-revision drop-in with enhanced peripherals (vsPIC16LC620A-04I/P)
Ghi chú thiết kế
The PIC16LC620-04I/P accepts 2.5-6.25 V on VDD (pin 18). For 3-cell alkaline or 3.3 V regulated supplies, add a 100 nF decoupling capacitor within 5 mm of VDD plus a 10 uF bulk capacitor at the regulator output. During SLEEP mode the part draws microamp-level current; use the watchdog timer for periodic wake-up rather than polling to maximize battery life. Per the Microchip datasheet (DS30213D), VDD rise time must be monotonic to guarantee proper power-on reset (POR) - if the supply ramps slowly, add an external RC on MCLR to extend the reset window.
Place the 4 MHz crystal or resonator within 5 mm of OSC1 (pin 8) and OSC2 (pin 9) with short, symmetric traces. Add a guard ground ring around the oscillator to reduce EMI coupling into the ADC or comparator inputs. MCLR (pin 1) requires a 10 kohm pull-up to VDD; if ICSP programming is required, route RB6 (pin 16) and RB7 (pin 17) directly to the 5-pin ICSP header with no series resistors. Keep switching converter nodes and relay coils at least 10 mm from the crystal to avoid jitter.
Do not assume the PIC16LC620-04I/P firmware will run on the PIC16LC620A without re-validation: the 'A' silicon revision adds CCP and changes some SFR bit assignments. Do not exceed 6.25 V on VDD - the absolute maximum is 7.0 V per the datasheet, but sustained operation above 6.25 V is not characterized. The 4 MHz grade means external clock or crystal above 4 MHz will violate the timing spec; for higher speeds, choose the '20' grade variant. OTP memory cannot be erased - verify code in a Flash-equivalent (PIC16F628) before committing to OTP programming.
The PIC16LC620-04I/P in 18-pin PDIP dissipates negligible power (<50 mW) under normal 4 MHz operation, so no heatsinking is required. However, at industrial -40 to +85 C ambient, verify that oscillator start-up is reliable across the full temperature range - low-temperature crystal ESR can prevent oscillation with marginal load capacitors. Estimated: at 4 MHz with 5 V VDD and 13 active I/O lines, IDD is approximately 2 mA active and <1 uA in SLEEP, yielding a junction temperature rise well under 5 C above ambient.
Thông tin tuân thủ
RoHS compliance confirmed via DigiKey product listing (PN 218039). Not AEC-Q100 qualified - this part targets consumer/industrial rather than automotive safety-critical applications. Halogen-free status not stated on the verified distributor listings.
