PIC12C508A-04E/P - 8-bit 4MHz OTP MCU, 8-PDIP, Extended Temp | Microchip
Артикул: PIC12C508A-04E/P ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.55 | $25,50 |
| 100 | $2.18 | $218,00 |
| 500 | $1.92 | $960,00 |
| 1.000 | $1.74 | $1.740,00 |
PIC12C508A-04E/P Обзор
An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory (ROM/OTP/Flash), data RAM, and peripheral set. Within the broader hierarchy, the PIC12C508A belongs to the PIC12C5xx family of 8-bit microcontrollers -> the Microchip PIC microcontroller family -> the 8-bit MCU class -> the microcontroller category -> the embedded processing semiconductor class. The 'C' suffix denotes CMOS OTP process, the 'A' marks a die-revision upgrade, the '04' specifies the 4 MHz speed grade, 'E' marks the extended temperature range (-40C to +125C), and '/P' indicates the PDIP-8 package.
Key features include a 1 microsecond instruction cycle (4 MHz oscillator divided by 4), an 8-bit timer/counter (TMR0) with 8-bit programmable prescaler, Power-On Reset (POR), Device Reset Timer (DRT), and a Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation without external components. Programmable code protection is supported and 1,000,000 erase/write cycles endurance is rated.
Architecturally, the PIC12C508A employs a RISC Harvard architecture with separate program and data paths, enabling single-cycle instruction execution except for branches. The CMOS OTP process delivers low static power consumption, and the in-circuit serial programming (ICSP) interface enables firmware updates via two pins, simplifying prototyping.
Typical applications include logic replacement (replacing discrete 555/4017 circuits with one chip), appliance controllers, white-goods user interfaces, low-end automotive body electronics, remote-control transmitters, sensor signal conditioning, simple PWM/sequence generators, and battery-powered devices where the 8-pin footprint and low pin count fit the application.
When designing with this device, note that OTP is one-time-programmable: firmware must be fully verified before burn. For extended temperature operation ensure the 'E' suffix part is specified; the standard '04/P' variant operates only 0C to +70C. The 6 I/O pins share package pins with VDD/VSS/GP3-only, so multi-function pin assignment requires careful review against the pinout.
This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives, and practical design considerations not consolidated on any single datasheet.
Аналоги без доработки для PIC12C508A-04E/P — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC12C508A-04E/P (тот же форм-фактор и посадочное место) — отличается по Package, Program Memory Type, Watchdog Timer, Program Memory Size, RoHS Status.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC12C508A-04/P
✅ Прямая замена✓ В наличии
$0.95 / шт.
Открыть даташит →PIC12C508A-04I/P
✅ Прямая замена✓ В наличии
$0.81 / шт.
Открыть даташит →PIC12C508-04I/SM
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$1.18 / шт.
Открыть даташит →PIC12C508-04/P
✅ Прямая замена✓ В наличии
$1.62 / шт.
Открыть даташит →PIC12C508A-04E/SM
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
PIC12F508-I/P
✅ Прямая замена✓ В наличии
$0.5 / шт.
Открыть даташит →PIC12C508A-04E/P Максимальные параметры и электрические характеристики
| Manufacturer | Microchip Technology |
| Series | PIC 12C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Max CPU Speed | 4 MHz |
| Program Memory Size | 768 B (512 x 12) OTP |
| RAM Size | 25 B |
| Number of I/O | 6 |
| Корпус | 8-DIP (0.300 inch, PDIP-8) |
| Тип монтажа | Through Hole |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Рабочая температура | -40 C to +125 C (Extended, 'E' suffix) |
| Instruction Set | 33 single-word instructions, RISC |
| Timer/Counters | TMR0, 8-bit, with 8-bit prescaler |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| Program Memory Type | OTP (One-Time Programmable) |
| In-Circuit Programming | ICSP supported |
| Статус RoHS | Compliant (lead-free 'P' suffix) |
Конфигурация выводов PIC12C508A-04E/P
| Контакт 1 | GP2/OSC1/AN2 — General-purpose I/O / Oscillator input / analog ch2 (Thru bit) |
| Контакт 2 | GP1/OSC2/CLKIN — General-purpose I/O / Oscillator output / external clock input |
| Контакт 3 | GP0/ICSPDAT — General-purpose I/O / ICSP data |
| Контакт 4 | GP3/MCLR/VPP — Input-only GPIO / Master Clear reset / Programming voltage |
| Контакт 5 | GND — Ground reference |
| Контакт 6 | GP4/ICSPCLK — General-purpose I/O / ICSP clock |
| Контакт 7 | GP5/OSC1/CLKIN — General-purpose I/O / Oscillator input / external clock input |
| Контакт 8 | VDD — Positive supply (3.0V to 5.5V) |
Типичное применение
PIC12C508A-04E/P подходит для 7 применениеs: Discrete Logic Replacement, Appliance and White-Goods Controllers, Remote Control and IR Transmitter, Simple Sensor Signal Conditioning, Battery-Powered Standalone Timers, Automotive Body Electronics (Non-Safety), Educational and Hobby Electronics.
Discrete Logic Replacement
The PIC12C508A-04E/P replaces multiple discrete 555 timers, 4017 counters, flip-flops, and glue-logic gates in legacy designs, collapsing 4-8 ICs into one 8-pin chip. With 33 single-word RISC instructions executing at 1 microsecond per instruction (4 MHz oscillator divided by 4), it handles timing, sequencing, and PWM tasks with deterministic latency. Its 6 I/O pins are sufficient for many low-pin-count glue-logic replacements, and the OTP memory locks the design for production. The 3.0V-5.5V supply range matches legacy 5V logic rails, simplifying retrofit into existing PCB designs.
Рекомендуется
Appliance and White-Goods Controllers
The PIC12C508A-04E/P is widely used in washing machines, dishwashers, microwave ovens, and refrigerator user-interface boards where simple sequencing and indicator driving are required. The extended -40C to +125C temperature rating covers refrigerator compartments and oven-adjacent control panels. With 6 I/O, it drives LED indicators directly, scans 4x4 keypads via matrix, and sequences motor relays through TRIAC drivers. The 768 B OTP is sufficient for state-machine controllers, and the Watchdog Timer with on-chip RC oscillator ensures recovery from supply glitches typical in motor-driven appliances.
Рекомендуется
Remote Control and IR Transmitter
The PIC12C508A-04E/P fits remote-control transmitters (TV, audio, garage door) where 6 I/O drive a 3x4 keypad matrix plus IR LED modulation. Its low power consumption (CMOS process, microamp sleep currents) extends battery life in handheld remotes. The 4 MHz core easily synthesizes standard IR carrier frequencies (38 kHz, 40 kHz) through software PWM on TMR0, with the Watchdog Timer handling wake-from-sleep on button press. OTP memory locks the protocol and prevents unauthorized cloning of consumer IR codes, an important consideration for consumer electronics.
Рекомендуется
Simple Sensor Signal Conditioning
The PIC12C508A-04E/P conditions low-bandwidth sensor signals (temperature, humidity, contact closure) in industrial and consumer sensor nodes. With 6 I/O it reads one analog input (using basic threshold via GP1 with comparator-style techniques) plus multiple digital sensors, then drives an indicator or simple relay output. The 4 MHz core and 1 microsecond instruction time are sufficient for polled sensor sampling at 1-10 kHz. Extended -40C to +125C operation suits outdoor and industrial sensor housings, while OTP locks the calibration per channel at production.
Рекомендуется
Battery-Powered Standalone Timers
The PIC12C508A-04E/P powers battery-operated devices like garden-watering controllers, holiday lighting timers, and low-end data loggers. The CMOS process enables sleep currents below 1 microamp, allowing multi-year battery life when the Watchdog Timer wakes the MCU periodically. With 6 I/O the device drives a small LCD (via segment multiplexing), one relay output, and two user buttons. The 3.0V minimum supply matches 2x AA alkaline cells (2.0V-3.2V during discharge) and a single CR2032 lithium cell, eliminating the boost converter.
Рекомендуется
Automotive Body Electronics (Non-Safety)
The PIC12C508A-04E/P serves in non-safety automotive body modules: interior lighting controllers, mirror adjusters, simple wiper-interval timers, and seat-position memory helpers. The extended -40C to +125C rating covers cabin and under-hood-adjacent environments, while the 33-instruction RISC core sequences relays and reads switches. With 6 I/O the device replaces dedicated timer ICs in body controllers. Note that safety-critical functions (airbag, ABS, steering) require AEC-Q100 qualified MCUs such as PIC16F18324-I/P - the PIC12C508A family is not AEC-Q100 qualified.
Рекомендуется
Educational and Hobby Electronics
The PIC12C508A-04E/P remains popular in undergraduate embedded courses, hobby projects, and DIY maker kits due to its 8-pin simplicity, low cost (~$1.74 at qty 1000), and free MPLAB X IDE support. Students learn RISC architecture, GPIO bit manipulation, timer interrupts, and ICSP in-circuit programming without paying for a debugger (PICKit3 suffices). The 768 B OTP teaches discipline in code budgeting. Its PDIP-8 through-hole package drops into breadboards and stripboards without surface-mount soldering, accelerating early-stage prototyping.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC12C508A-04E/P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC12C508A-04/P | PIC12C508A-04I/P | PIC12C508-04I/SM | PIC12C508-04/P | PIC12C508A-04E/SM | PIC12F508-I/P |
|---|---|---|---|---|---|---|---|
| Package | PDIP-8 (through-hole) | PDIP-8 - same | PDIP-8 - same | SOIC-8 - surface mount | PDIP-8 - same | SOIC-8 - surface mount | PDIP-8 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | PIC 8-bit RISC, 33 instructions | Same PIC 8-bit RISC | Same PIC 8-bit RISC | Same PIC 8-bit RISC (older silicon) | Same PIC 8-bit RISC (older silicon) | Same PIC 8-bit RISC | Same PIC 8-bit RISC |
| Max CPU Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 768 B OTP | 768 B OTP | 768 B OTP | 768 B OTP | 768 B OTP | 768 B OTP | 768 B Flash |
| Operating Temperature | -40 C to +125 C (Extended) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) |
| RAM | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| Number of I/O | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
Ключевые отличия
- Extended temperature range -40C to +125C for harsh environments (против PIC12C508A-04/P)
- Same 8-pin PDIP footprint as Flash-based PIC12F508-I/P enables dual-source tooling (против PIC12F508-I/P)
- Current 'A' silicon revision with improved electrical characteristics over original PIC12C508 (против PIC12C508-04E/P)
Заметки по проектированию
The PIC12C508A-04E/P uses One-Time Programmable (OTP) memory: any error burned into the array cannot be erased. Estimated: at 1-microsecond per instruction and 768 B program memory, the chip fits roughly 500-600 instructions; plan firmware carefully and prototype on the Flash-based PIC12F508-I/P first, then port the verified hex to the OTP device for production. A single burned faulty OTP part costs the same as a working one, so OTP is intended for fully debugged production firmware only.
The PIC12C508A-04E/P operates from 3.0V to 5.5V; applying 6V or more damages the part permanently. For designs that may see voltage transients (automotive load-dump, motor back-EMF), add a series resistor and 5.1V Zener or TVS diode on VDD. Estimated: total current draw in active mode at 4 MHz is typically 1-2 mA and sleep current is below 1 microamp, so a 100 nF decoupling cap on VDD close to pin 8 plus a 10 uF bulk cap handles typical designs.
The ICSP programming pins (ICSPCLK on GP4/pin 6, ICSPDAT on GP0/pin 3) must be accessible after PCB assembly: either route them to a 2x3 header or leave pads for pogo-pin programming. Per Microchip DS40139E, GP3/MCLR on pin 4 is input-only and shares the programming voltage pin; it cannot be used as output. For reliable in-circuit programming keep VDD, GND, ICSPCLK, ICSPDAT, and MCLR free of series resistance above 100 ohms or heavy capacitance above 50 pF.
GP3 (pin 4) is the only input-only GPIO and shares the MCLR reset function; an external RC network on MCLR sets the reset delay. If MCLR is not used as a reset, tie it to VDD through a 10 kohm resistor and add 100 nF to GND for noise immunity. Estimated: clock oscillator start-up time at 4 MHz is typically 1-2 ms; the internal Power-On Reset (POR) plus Device Reset Timer (DRT) provide adequate delay for oscillator stabilization, eliminating the need for external reset circuitry in most designs.
Информация о соответствии
RoHS compliant per Microchip product page (lead-free '/P' suffix). NOT AEC-Q100 qualified - do not use in safety-critical automotive applications; choose PIC16F18324-I/P or similar AEC-Q100 part instead.
