PIC16LC558-04/P - 8-bit OTP MCU 3.5KB 4MHz 18-DIP | Microchip
MPN: PIC16LC558-04/P ✗ Cuối đờiPIC16LC558-04/P Tóm tắt
An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, program memory, data RAM, I/O peripherals, and timers on a single die. Within the broader taxonomy, the PIC16LC558 sits in the hierarchy: PIC16C-series OTP MCU -> PIC16 family -> 8-bit PIC microcontroller -> Microchip MCU -> microcontroller -> embedded processor -> semiconductor. The "L" in the prefix denotes a low-power CMOS variant optimized for battery and energy-constrained designs, while the "C" indicates One-Time-Programmable (rather than UV-erasable) EPROM technology.
Key features include a Harvard RISC architecture with a 14-bit instruction word, single-cycle instruction execution except for branches, a 4MHz oscillator input, an 8-bit timer/counter (TMR0), a Watchdog Timer with its own on-chip RC oscillator, Power-on Reset, Brown-out Detection, and In-Circuit Serial Programming™ (ICSP™). The 13 I/O pins support individual direction control, weak pull-ups via OPTION_REG, and direct LED drive capability on PORTA and PORTB. The OTP memory is programmed once via ICSP and cannot be erased, making this part economical for high-volume production where firmware is final.
Typical applications include appliance controls, sensor signal conditioning front-ends, automotive body controllers (non-safety), industrial timers, low-cost remote controls, and small user-interface panels. The 13 I/O pins and 128-byte RAM are sufficient for state-machine-based control loops, simple keypad scanning, and driving multiplexed 7-segment LED or character LCDs without external logic.
When designing with the PIC16LC558-04/P, observe the 4MHz maximum oscillator frequency at 5V (lower at reduced VDD), provide a 100nF decoupling capacitor within 10mm of VDD, and use a bulk 10-100uF capacitor on the supply rail. The 18-pin PDIP footprint is the through-hole industry standard, enabling hand-soldering, breadboard prototyping, and easy firmware rework.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC558-04/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 PIC16LC558-04/P (cùng hình factor và footprint) — khác nhau ở Instruction Cycle Time, Operating Temperature, Timers, Program Memory Size, Core Architecture.
PIC16LC558-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC558-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C558-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C558-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16CR558-04/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC558-04/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 128 bytes |
| Maximum CPU Frequency | 4 MHz |
| Number of I/O Pins | 13 |
| Điện áp cung cấp | 3.0 V to 5.5 V |
| Instruction Word Width | 14-bit |
| Number of Timers | 1 x 8-bit (TMR0) |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Oscillator Type | External crystal/ceramic resonator or RC |
| Brown-out Detect | Yes |
| Power-on Reset | Yes |
| In-Circuit Programming | Yes (ICSP™) |
| Package Type | 18-pin PDIP (0.300", 7.62mm) |
| Kiểu lắp đặt | Through-Hole |
| Nhiệt độ hoạt động | 0°C to +70°C (commercial) |
| Temperature Grade | Commercial |
| Process Technology | CMOS, OTP EPROM |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LC558-04/P
| Chân 1 | RA2 — PORTA bit 2 (digital I/O) |
| Chân 2 | RA3 — PORTA bit 3 (digital I/O) |
| Chân 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| Chân 4 | MCLR/VPP — Master Clear (reset, active low) / ICSP programming voltage |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 7 | RB1 — PORTB bit 1 (digital I/O) |
| Chân 8 | RB2 — PORTB bit 2 (digital I/O) |
| Chân 9 | RB3 — PORTB bit 3 (digital I/O) |
| Chân 10 | RB4 — PORTB bit 4 (digital I/O, interrupt-on-change) |
| Chân 11 | RB5 — PORTB bit 5 (digital I/O, interrupt-on-change) |
| Chân 12 | RB6 — PORTB bit 6 (digital I/O, ICSP clock) |
| Chân 13 | RB7 — PORTB bit 7 (digital I/O, ICSP data) |
| Chân 14 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal output / clock out (Fosc/4) |
| Chân 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 17 | RA0 — PORTA bit 0 (digital I/O) |
| Chân 18 | RA1 — PORTA bit 1 (digital I/O) |
Ứng dụng tiêu biểu
PIC16LC558-04/P phù hợp cho 6 Áp dụngs: Appliance Control Boards, Industrial Timer and Counter Modules, Remote Control Transmitters, Automotive Body Controllers (Non-Safety), Sensor Signal Conditioning Front-Ends, User Interface Panels with LED/LCD.
Appliance Control Boards
The PIC16LC558-04/P fits appliance control boards because its 13 digital I/O pins are sufficient for keypad scanning, relay/SSR drive, and triac interfacing, while the 4MHz RISC core handles simple state-machine firmware in 3.5KB OTP. Brown-out detection and Power-on Reset protect against supply glitches during motor inrush. Placed as the main controller on the user-interface PCB with 100nF decoupling and a 4MHz crystal on OSC1/OSC2, it provides stable low-cost control without external logic. Compared to flash-based PIC16F alternatives, the OTP version lowers per-unit cost at 50K+ volumes.
Được đề xuất
Industrial Timer and Counter Modules
The PIC16LC558-04/P fits industrial timer modules because its 8-bit TMR0 with programmable prescaler handles event counting and elapsed-time measurements without external counters. The Watchdog Timer with dedicated RC oscillator resets the MCU on firmware lockup. Placed on a DIN-rail timer PCB with the 18-pin PDIP footprint, it drives LED indicators directly via PORTB and accepts 24V inputs through resistor dividers on PORTA. Brown-out detection ensures clean restart after power dips common in industrial environments.
Được đề xuất
Remote Control Transmitters
The PIC16LC558-04/P fits IR remote control transmitters because its low-power CMOS 'L' design reduces battery drain and the 13 I/O pins support 4x4 key matrix scanning plus IR LED drive. The 4MHz instruction cycle is fast enough to modulate 38kHz carrier frequencies in software. Placed in a handheld remote with two AAA cells, the Watchdog Timer enables deep sleep via SLEEP instruction to extend battery life. Unlike flash-based alternatives, OTP prevents firmware reverse-engineering of proprietary IR codes.
Được đề xuất
Automotive Body Controllers (Non-Safety)
The PIC16LC558-04/P fits automotive body control modules for lighting, wiper, and accessory timing because its 13 I/O pins handle relay drive and switch inputs directly. Brown-out Detection protects against load-dump voltage transients when paired with an external TVS. Placed in a sealed under-dash enclosure, the 18-pin PDIP withstands vibration better than surface-mount packages. The PIC16LC558-04I/P industrial-temperature variant extends operation to -40C for under-hood mounting zones.
Được đề xuất
Sensor Signal Conditioning Front-Ends
The PIC16LC558-04/P fits sensor signal conditioning front-ends because its 8-bit ADC-less design (using comparator + TMR0) measures pulse-width or frequency output sensors like thermistors in RC oscillators. The 13 I/O pins route multiple sensor inputs to a single MCU. Placed between the analog sensor and a higher-level controller, it pre-processes and digitizes signals before UART-style bit-banging transmission. The low-power CMOS design suits battery-powered wireless sensor nodes.
Được đề xuất
User Interface Panels with LED/LCD
The PIC16LC558-04/P fits small user-interface panels because its PORTB 8-bit bus drives multiplexed 7-segment LEDs or character LCDs directly without external drivers. TMR0 generates LCD refresh or LED multiplexing interrupts at precise intervals. Placed as the sole MCU on a control-panel PCB with the 18-pin PDIP footprint, it scans a 3x4 keypad matrix on PORTA and writes display data to PORTB. The 3.5KB OTP holds table-driven menu logic for typical appliance interfaces.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC558-04/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 | PIC16LC558-04I/P | PIC16LC558-04E/P | PIC16C558-04/P | PIC16C558-04I/P | PIC16CR558-04/P |
|---|---|---|---|---|---|---|
| Package | 18-PDIP (0.300") | 18-PDIP (0.300") - same | 18-PDIP (0.300") - same | 18-PDIP (0.300") - same | 18-PDIP (0.300") - same | 18-PDIP (0.300") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB ROM (mask) |
| Memory Type | OTP EPROM (one-time) | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Mask ROM |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Max CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| Temperature Grade | Commercial 0C to +70C | Industrial -40C to +85C | Extended -40C to +125C | Commercial 0C to +70C | Industrial -40C to +85C | Commercial 0C to +70C |
Bảo phân biệt quan trọng
- True drop-in industrial-temperature upgrade available (vsPIC16LC558-04I/P)
- Low-power CMOS architecture for battery designs (vsPIC16C558-04/P)
- Mask-ROM variant for ultra-high-volume cost reduction (vsPIC16CR558-04/P)
Ghi chú thiết kế
Place a 100nF ceramic decoupling capacitor (X7R or X5R) within 10mm of the VDD pin and a bulk 10-100uF electrolytic on the supply rail. The PIC16LC558-04/P can source/sink up to 25mA per I/O pin (200mA total) but the 5V regulator must support the peak load; for relay-driven designs add a flyback diode across each inductive load. The low-power 'L' variant draws approximately 2mA active at 4MHz/5V versus 5mA for the standard 'C' variant, a key advantage in battery designs.
Keep the 4MHz crystal traces short (<10mm) and symmetric, with the load capacitors placed close to OSC1/OSC2. The MCLR pin requires a 10kohm pull-up to VDD and a 100nF capacitor to ground for proper reset; omitting this causes intermittent startup failures. For ICSP programming, route PGD (RB7), PGC (RB6), and MCLR to an in-circuit header or test points to enable field firmware updates before OTP locking.
OTP EPROM cannot be erased - verify firmware on a windowed PIC16C558 UV-erasable emulator before committing code. Brown-out Detect (BOD) and Power-on Reset (POR) must be enabled in the configuration word to prevent code execution at low VDD, which can corrupt EEPROM data and cause latch-up. Do not exceed 4MHz clock at 5V or 1MHz at 3V - the oscillator's internal phase-locked loop fails above these limits.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the -04I/P and -04E/P variants extend temperature range but are not automotive-qualified; for AEC-Q100 designs use PIC16F88-I/P or PIC16F628A-I/P.
