PIC16LC620-04/P - 4MHz 8-Bit OTP MCU, 13 I/O, 18-PDIP | Microchip
MPN: PIC16LC620-04/P ✗ Cuối đờiPIC16LC620-04/P Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and I/O peripherals on one die. The PIC16C family uses a RISC-like Harvard architecture with 35 single-word instructions, an 8-bit data path, and a 14-bit instruction word, placing it in the broader taxonomy of microcontroller -> embedded controller -> semiconductor. PIC16C parts preceded the flash-based PIC16F series and were widely deployed in low-cost appliance, industrial, and consumer products before flash erased OTP as the dominant technology.
Key features include a 20 MHz maximum clock input (the '-04' speed grade limits operation to 4 MHz), an internal RC oscillator option, a 5-bit comparator with reference, a Capture/Compare/PWM (CCP) module, an 8-bit timer/counter, and a Watchdog Timer with its own on-chip RC oscillator for reliable recovery. Programmable code protection and an ICD-friendly in-circuit debug option simplify field updates and brown-out protection preserves memory integrity during power events.
Architecturally, the PIC16LC620 separates program and data buses (Harvard), uses a 14-bit instruction word for compact code density, and offers two hardware stack levels for subroutine nesting. The LC process node targets ultra-low quiescent current (typically under 1 mA at 5 V/4 MHz), enabling applications where idle power matters more than peak throughput.
Typical applications include low-cost remote controls, IR receivers, battery chargers, smoke detectors, fan controllers, small appliance user interfaces, security keypads, and stand-alone sensor signal-conditioning blocks. The 18-PDIP package is well suited to hand-soldered prototypes and educational kits.
When designing with this device, place a 100 nF decoupling capacitor as close as possible to VDD/VSS, ensure MCLR is pulled high through a resistor for normal operation, and respect the 4 MHz oscillator ceiling for the '-04' speed grade. The OTP memory requires a device programmer; for prototyping or in-field updates, choose a flash-based PIC16F equivalent in the same 18-pin footprint.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC620-04/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 PIC16LC620-04/P (cùng hình factor và footprint) — khác nhau ở Instruction Cycle Time, Core Architecture, Program Memory Size, Program Memory Type, Stack Depth.
PIC16LC620A-04I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC620-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C620-04/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC620A-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F628A-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC620-04/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C (8-bit RISC Harvard) |
| Core Size | 8-Bit |
| Instruction Set Width | 14-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 896 B (512 x 14 words) |
| Data RAM | 80 B |
| Tần số xung maksimum | 4 MHz (-04 speed grade) |
| Instruction Cycle Time | 200 ns |
| Operating Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 13 |
| Timers | 1 x 8-bit + Watchdog Timer |
| Capture/Compare/PWM | 1 x CCP module |
| Analog Comparators | 2 |
| Hộp | 18-pin PDIP (P) |
| Kiểu lắp đặt | Through Hole |
Cấu hình chân PIC16LC620-04/P
| Chân 1 | RA2 — Digital I/O port A bit 2 |
| Chân 2 | RA3 — Digital I/O port A bit 3 |
| Chân 3 | RA4/T0CKI — Digital I/O port A bit 4 / Timer0 clock input |
| Chân 4 | MCLR/VPP — Master Clear (reset) / programming voltage input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Digital I/O port B bit 0 / external interrupt |
| Chân 7 | RB1 — Digital I/O port B bit 1 |
| Chân 8 | RB2 — Digital I/O port B bit 2 |
| Chân 9 | RB3 — Digital I/O port B bit 3 |
| Chân 10 | RB4 — Digital I/O port B bit 4 |
| Chân 11 | RB5 — Digital I/O port B bit 5 |
| Chân 12 | RB6 — Digital I/O port B bit 6 |
| Chân 13 | RB7 — Digital I/O port B bit 7 |
| Chân 14 | VDD — Positive supply (2.5 V to 6.0 V) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 16 | OSC1/CLKIN — Oscillator input / external clock in |
| Chân 17 | RC0 — Digital I/O port C bit 0 |
| Chân 18 | RC1 — Digital I/O port C bit 1 |
Ứng dụng tiêu biểu
PIC16LC620-04/P phù hợp cho 6 Áp dụngs: Remote Control and IR Receiver, Battery Charger Control, Smoke and Heat Detector, Small Appliance User Interface, Security Keypad and Access Controller, Educational MCU Trainer and Prototyping.
Remote Control and IR Receiver
The PIC16LC620-04/P's 4 MHz PIC16C core, 13 I/O pins and 2.5-6.0 V supply range make it well suited to low-cost IR remote controls and receiver front-ends. The LC variant's sub-1 mA quiescent current at 5 V extends coin-cell battery life, while the 8-bit timer and 2 analog comparators simplify carrier-frequency detection (typically 38 kHz) and demodulation without external op-amps. The 896 B OTP holds decoding tables for several protocols (RC5, NEC, Sony SIRC) with 80 B RAM for transient buffers, and the 18-PDIP package is ideal for hand-soldered consumer products.
Được đề xuất
Battery Charger Control
The PIC16LC620-04/P's low quiescent current (<1 mA at 5 V/4 MHz) and on-chip analog comparators make it a natural fit for NiMH / NiCd and small Li-ion charger controllers. The comparators monitor Vdd, battery voltage and charge current via external resistor dividers, while the 8-bit timer drives PWM charge-phase control. The 13 I/O accommodate charge status LEDs, thermistor input and enable signals, and the 18-PDIP package supports through-hole charger boards for power-tool and consumer battery packs.
Được đề xuất
Smoke and Heat Detector
Smoke and heat detectors demand low standby current and reliable Watchdog Timer operation, both delivered by the PIC16LC620-04/P. The LC variant draws under 1 mA in active mode at 5 V and far less in sleep, enabling multi-year battery life on a 9 V cell. The on-chip Watchdog Timer with dedicated RC oscillator recovers from brown-outs without external components, and the 2 analog comparators interface directly to ionization-chamber or photoelectric smoke sensor front-ends. The 896 B OTP holds alarm-discrimination algorithms and beep-pattern tables.
Được đề xuất
Small Appliance User Interface
Small appliances such as toaster ovens, fans and coffee makers rely on the PIC16LC620-04/P for keypad scanning, seven-segment LED multiplexing and triac/SCR phase control. The 13 I/O drive up to 13 segment or button lines without a driver, the 8-bit timer generates the multiplex refresh, and the analog comparators sense zero-cross for triac firing. The 18-PDIP package is well suited to hand-assembly and field service, and 896 B OTP provides ample code space for menu logic, timer profiles and safety interlocks.
Được đề xuất
Security Keypad and Access Controller
Security keypads require 4x4 matrix scanning, EEPROM-based PIN storage (handled in firmware via external 24LC01) and Watchdog-protected lock control - all within the PIC16LC620-04/P's capabilities. The 13 I/O support a 4x4 matrix with one spare for buzzer or relay drive, the LC variant's low quiescent current extends backup-battery life, and the on-chip Watchdog recovers from code lockups during attempted tampering. The 80 B RAM buffers PIN entry and the 896 B OTP holds the verification and lock-actuation logic.
Được đề xuất
Educational MCU Trainer and Prototyping
Universities and makers favor the PIC16LC620-04/P for embedded-systems courses because the 18-PDIP package fits every breadboard and the PIC16C instruction set (35 single-word instructions) is ideal for teaching RISC fundamentals. The 4 MHz oscillator ceiling allows predictable timing demonstrations, and the on-chip peripherals (CCP, comparator, Watchdog) introduce students to real silicon features without external parts. The 896 B OTP is sufficient for term-project firmware, and the LC variant's low power simplifies battery-powered labs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC620-04/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 | PIC16LC620A-04I/P | PIC16LC620-04I/P | PIC16C620-04/P | PIC16LC620A-04/P | PIC16F628A-I/P |
|---|---|---|---|---|---|---|
| Package | 18-pin PDIP | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM (896 B / 512 x 14) | OTP EPROM (896 B) | OTP EPROM (896 B) | OTP EPROM (896 B) | OTP EPROM (896 B) | Flash (2K x 14) |
| Data RAM | 80 B | 80 B | 80 B | 80 B | 80 B | 224 B |
| Max Clock Frequency | 4 MHz (-04 grade) | 4 MHz (-04 grade) | 4 MHz (-04 grade) | 4 MHz (-04 grade) | 4 MHz (-04 grade) | 20 MHz |
| Operating Voltage | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 3.0 V to 6.0 V | 2.5 V to 6.0 V | 2.0 V to 5.5 V |
| Temperature Grade | Commercial | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial | Commercial | Industrial (-40C to +85C) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
Bảo phân biệt quan trọng
- Low-power LC silicon variant (vsPIC16C620-04/P)
- Industrial temperature option in same footprint (vsPIC16LC620-04I/P)
- Flash-based modern equivalent with full backwards compatibility (vsPIC16F628A-I/P)
Ghi chú thiết kế
The PIC16LC620-04/P draws typically under 1 mA at 5 V and 4 MHz in active mode, and significantly less in sleep, per the manufacturer datasheet. Place a 100 nF decoupling capacitor as close as possible to VDD (pin 14) and VSS (pin 5), with a bulk 10 uF electrolytic nearby to suppress supply transients caused by I/O switching. Brown-out detection is enabled via configuration fuses to protect OTP integrity during power dips.
In the 18-pin PDIP layout, route the OSC1/OSC2 traces short and shield them from high-current traces to avoid coupling noise into the system clock. MCLR (pin 4) must be pulled high through a 10 kohm resistor for normal operation, and a 100 nF cap to VSS on MCLR improves reset noise immunity. Keep RA4 (open-drain) trace short if used as T0CKI to minimize parasitic capacitance affecting Timer0 accuracy.
The '-04' speed grade limits maximum clock input to 4 MHz - exceeding this with an external clock or resonator violates the AC electrical spec and is a common pitfall when re-using the PIC16LC620-20 design. OTP memory cannot be erased in-circuit; firmware revisions require new parts. Configuration fuses must be programmed correctly or the device will not execute user code (especially the watchdog and oscillator selections).
At 4 MHz / 5 V, the PIC16LC620-04/P dissipates well under 50 mW, so thermal management is not a concern in typical designs. However, sustained high I/O sink currents (up to 25 mA per pin, 100 mA total per port) combined with elevated ambient temperatures in enclosed appliances can push the junction toward the 125C commercial limit; derate I/O loading or use port-current-limiting resistors if the enclosure exceeds 70C.
Thông tin tuân thủ
RoHS and lead-free status not confirmed in current data sources; PIC16LC620 was introduced before RoHS deadlines so early production was lead-bearing. AEC-Q100 not applicable (consumer/industrial MCU). Cross-check lot-specific certificate of conformance before shipping to RoHS-regulated markets.
