PIC16C505-04E/SL - 8-Bit 4MHz OTP MCU, 1.5KB | Microchip
MPN: PIC16C505-04E/SL ✗ Cuối đờiPIC16C505-04E/SL Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (ROM/Flash/OTP), working RAM, and peripheral I/O into one package. Within the broader semiconductor taxonomy, an MCU belongs to the logic IC / microcontroller category, which sits below microprocessors and above discrete digital logic in capability. The PIC16C505 specifically belongs to the PIC16C5x baseline OTP family - a cost-optimized lineage used where low pin count, deterministic instruction timing, and OTP-based code storage are acceptable.
Key features include 33 single-word instructions, a hardware RESET input, a watchdog timer, an 8-bit real-time clock/counter with 8-bit prescaler, and four interrupt sources. The OTP program memory enables low-cost prototyping and low-to-mid volume production runs, while the CMOS process delivers low quiescent current typical of battery-powered applications. The 14-pin SOIC footprint keeps board area minimal while leaving 12 lines free for digital I/O after power, ground, and RESET are allocated.
Architecturally, the PIC16C505 uses a Harvard-style RISC core with a separate 12-bit instruction word and 8-bit data path. The 4 MHz oscillator produces a 1 MHz instruction rate (4:1 internal divider) yielding a 1 microsecond instruction cycle, suitable for tight control loops and deterministic timing. The integrated watchdog timer and power-on reset reduce external component count.
Typical applications include low-cost appliance control, sensor signal conditioning front ends, LED lighting controllers, battery chargers, and simple user-interface boards. The extended temperature grade makes it suitable for automotive under-hood subsystems and industrial machine controllers where commercial-grade parts would otherwise be inadequate.
When designing with this part, allocate VDD/VSS decoupling with a 100 nF ceramic capacitor placed within 5 mm of the device, and provide an RC delay or proper MCLR pull-up to ensure clean POR behavior. OTP memory cannot be erased, so plan for code-stable volume runs or use the PIC16F505 flash variant for development and field updates.
This page consolidates distributor pricing, drop-in alternatives, application examples, and design notes not found in the standalone manufacturer datasheet, enabling engineers to evaluate the PIC16C505-04E/SL for new designs and legacy board replacements.
Bộ thay thế dễ dàng lắp đặt cho PIC16C505-04E/SL — 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 PIC16C505-04E/SL (cùng hình factor và footprint) — khác nhau ở Package, Watchdog Timer, Timers, Core Architecture, Brown-out Reset / POR.
PIC16F505-I/SL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C505-04/SL
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C505-04I/SL
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F505-E/SL
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C505-04E/SL Tỷ lệ tối đa & tính chất điện
| Product Family | PIC 16C |
| Core Architecture | PIC16C5x (8-bit RISC, Harvard) |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 72 bytes |
| CPU Speed | 4 MHz |
| Instruction Cycle | 200 ns |
| Instruction Set Size | 33 single-word instructions |
| I/O Pins | 12 |
| Timers | 1 x 8-bit with 8-bit prescaler |
| Watchdog Timer | Yes |
| Interrupt Sources | 4 |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Nhiệt độ hoạt động | -40C to +125C (Extended, 'E' suffix) |
| Hộp | 14-SOIC (3.90 mm, 'SL' suffix) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 |
Cấu hình chân PIC16C505-04E/SL
| Chân 1 | VDD — Positive supply voltage |
| Chân 2 | OSC1/CLKIN — Oscillator input / external clock |
| Chân 3 | OSC2/CLKOUT — Oscillator output |
| Chân 4 | GP5/RTCC — GPIO / RTCC timer pin |
| Chân 5 | GP4/MCLR — GPIO / Master Clear (reset) input |
| Chân 6 | GP3 — GPIO (input only) |
| Chân 7 | GP2 — GPIO / T0CKI |
| Chân 8 | GP1 — GPIO |
| Chân 9 | GP0 — GPIO |
| Chân 10 | GP7 — GPIO |
| Chân 11 | GP6 — GPIO |
| Chân 12 | RB5 — Port B I/O bit 5 |
| Chân 13 | RB4 — Port B I/O bit 4 |
| Chân 14 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16C505-04E/SL phù hợp cho 6 Áp dụngs: Appliance Control Board, Battery Charger Controller, LED Lighting Controller, Sensor Signal Conditioning Front End, Automotive Body Electronics, User Interface / Keypad Scanner.
Appliance Control Board
The PIC16C505-04E/SL fits white-goods and small appliance control boards because it delivers 12 GPIO, 4 MHz deterministic timing, and -40C to +125C operation in a compact 14-SOIC. With 1.5 KB OTP program memory, the MCU can manage user-input buttons, relay drivers, and indicator LEDs for a washing-machine timer, microwave keypad, or coffee-maker pump controller. The 200 ns instruction cycle allows tight debounce and PWM control of small solenoids without an extra timer IC.
Được đề xuất
Battery Charger Controller
The PIC16C505-04E/SL is well suited to lead-acid and NiMH charger controllers where its 2.5 V to 5.5 V supply range, low quiescent current, and 8-bit timer with prescaler enable accurate charge-cycle sequencing. With 1.5 KB OTP, the firmware can implement CC/CV profiles, temperature-compensated endpoint detection, and LED status indication using 12 GPIO lines. The extended -40C to +125C temperature grade supports under-hood automotive and outdoor solar installations.
Được đề xuất
LED Lighting Controller
The PIC16C505-04E/SL drives multichannel LED controllers and decorative lighting effects through GPIO plus the on-chip 8-bit timer with prescaler. With 200 ns instruction execution, the MCU can generate PWM dimming up to several kHz across 12 channels using software bit-banging or hardware timer capture. The 1.5 KB OTP stores fixed lighting sequences for cost-sensitive signage or architectural fixtures.
Được đề xuất
Sensor Signal Conditioning Front End
The PIC16C505-04E/SL serves as a low-cost sensor-conditioning MCU in industrial and HVAC systems, reading thermistor, RTD, or 4-20 mA loop signals and presenting a processed digital output on its GPIO or PWM timer. With 4 MHz operation and 12 GPIO, it can handle up to four analog channels multiplexed through an external ADC. The extended temperature grade is appropriate for outdoor and under-hood sensor pods.
Được đề xuất
Automotive Body Electronics
The PIC16C505-04E/SL operates door-module, mirror-control, and interior-lighting nodes in automotive body-electronics applications where its -40C to +125C extended temperature grade and 12 GPIO match the requirements. With 1.5 KB OTP, the firmware can handle LIN-like soft-protocol stacks or simple switch-scan inputs. Designers migrating new designs should use the flash-based PIC16F505 for ISP and field update capability.
Được đề xuất
User Interface / Keypad Scanner
The PIC16C505-04E/SL scans 4x4 or smaller matrix keypads and drives character LCDs or seven-segment displays using its 12 GPIO and 200 ns instruction cycle for rapid row/column strobing. With 1.5 KB OTP, the firmware can debounce up to 16 keys, implement hold-repeat logic, and refresh a multiplexed display. The 4 MHz rate ensures flicker-free display updates at typical 100 Hz refresh.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C505-04E/SL — 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 | PIC16F505-I/SL | PIC16C505-04/SL | PIC16F505-E/SL |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Program Memory Type | OTP (1.5 KB) | Flash (1.5 KB) | OTP (1.5 KB) | Flash (1.5 KB) |
| CPU Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| RAM Size | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| Operating Voltage | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) |
| ISP / Field Update | No (OTP) | Yes (Flash, ISP) | No (OTP) | Yes (Flash, ISP) |
Bảo phân biệt quan trọng
- Extended industrial temperature grade in same 14-SOIC (vsPIC16C505-04/SL)
- Flash-based upgrade path with identical pinout (vsPIC16F505-I/SL)
- Lowest-cost 14-pin PIC16C5x baseline MCU (vsPIC16F505-E/SL)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and a bulk capacitor (>= 1 uF) on the same rail. The PIC16C505-04E/SL draws sharp current pulses during instruction execution; inadequate decoupling causes VDD droop and intermittent reset. A ferrite bead in series with VDD may help in noisy automotive environments. The MCLR pin should be tied to VDD through a 10 kohm resistor with a 100 nF cap to ground for clean power-on reset behavior.
OTP memory cannot be erased - if the firmware has any uncertainty, program a fresh PIC16C505-04E/SL or switch to the flash-based PIC16F505-I/SL before committing to production. Another common pitfall is leaving the MCLR pin floating; it must be tied high through a resistor or driven by the supervisor circuit, otherwise spurious resets occur. Finally, the GP3 pin is input-only on this PIC16C5x generation - do not configure it as output.
Estimated: at 4 MHz clock, full GPIO toggle, 5.0 V VDD, the PIC16C505-04E/SL draws about 2.0 mA active, dissipating roughly 10 mW - well within the SOIC-14 thermal envelope (theta_JA around 100 C/W on a 1 oz copper 2-layer board, junction rise < 1 C). No heatsink is required even at +125C ambient because CMOS quiescent current is negligible. Designers should still verify thermal behavior under worst-case operating conditions for safety-margin compliance.
Thông tin tuân thủ
RoHS/REACH status requires lot/date code verification at purchase. Part is NRND - not recommended for new designs per Microchip product lifecycle.
