PIC16LC56A-04/P - 4MHz 8-Bit CMOS MCU, 1.5KB EPROM | Microchip
Артикул: PIC16LC56A-04/P ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $0.77 | $0,77 |
| 10 | $0.7 | $7,00 |
| 100 | $0.63 | $63,00 |
| 500 | $0.57 | $285,00 |
| 1.000 | $0.5 | $500,00 |
PIC16LC56A-04/P Обзор
The PIC16C5X is a baseline 8-bit microcontroller (MCU) family introduced by Microchip in the early 1990s, sitting at the entry level of the PIC micro controller taxonomy. As a Harvard-architecture device, the program and data buses are separate, allowing simultaneous fetch and access. It belongs to the broader category of microcontrollers -> embedded controllers -> microprocessors -> semiconductors. The 12-bit wide instructions are highly symmetrical, delivering 2:1 code compression over competing 8-bit MCUs in the same price class.
Key features of this device include 12 bidirectional I/O pins (port A: 4 lines; port B: 8 lines) capable of directly driving LEDs, an 8-bit real-time clock/counter with 8-bit prescaler, watchdog timer with on-chip RC oscillator for reliable operation, and Power-on Reset (POR) plus Device Reset Timer (DRT) for clean startup. The instruction cycle time of 1 microsecond at 4 MHz provides deterministic interrupt-free execution. Operating temperature range is commercial, 0C to +70C.
Architecturally, the PIC16LC56A-04/P is a low-power CMOS variant of the PIC16C56A. The LC suffix designates a wider supply voltage range (3.0 V to 6.25 V) compared with the C-version (4.5 V to 5.5 V). The EPROM-based memory enables repeated erasing via UV exposure through the ceramic windowed package option (CERDIP-18 JW), which is useful for development; the P-suffix plastic package is the production/programmed variant.
Typical applications include low-cost consumer appliances, automotive body controllers, industrial timers and counters, HVAC controls, remote transmitters, and security alarm panels. The 12-bit instruction set and 1.5KB program memory are well-matched to logic-replacement, sequencer, and basic sensor-reading tasks where an 8-bit MCU with deterministic timing is preferred over a complex Cortex-M class device.
When designing with this device, confirm that the supply rail does not dip below 3.0 V under worst-case load transients, and place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin. For new designs, consider migrating to the flash-based PIC16F series for in-circuit reprogrammability, lower unit cost at moderate volumes, and wider distributor inventory.
This page synthesizes distributor pricing, parametric data, and pin-compatible same-family alternatives not found in any single manufacturer datasheet.
Аналоги без доработки для PIC16LC56A-04/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 PIC16LC56A-04/P (тот же форм-фактор и посадочное место) — отличается по Program Memory Type, Operating Temperature, Package, Watchdog Timer, Mounting Type.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC16C56A-04/P
✅ Прямая замена✓ В наличии
$1.85 / шт.
Открыть даташит →PIC16LC56A-04I/P
✅ Прямая замена✓ В наличии
$1.18 / шт.
Открыть даташит →PIC16C54A-04/P
✅ Прямая замена✓ В наличии
$3.75 / шт.
Открыть даташит →PIC16C55A-04/P
✅ Прямая замена✓ В наличии
$2.18 / шт.
Открыть даташит →PIC16C58A-04/P
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
PIC16LC56A-04/P Максимальные параметры и электрические характеристики
| RAM Size | 25 bytes |
| CPU Core | PIC16C5X 8-bit RISC |
| Instruction Set Width | 12-bit |
| Maximum Clock Speed | 4 MHz |
| Instruction Cycle Time | 1 us at 4 MHz |
| Number of Instructions | 33 |
| Supply Voltage (VDD) | 3.0 V to 6.25 V |
| I/O Pins | 12 (4 RA + 8 RB) |
| Timers | 1 x 8-bit RTCC with 8-bit prescaler |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Program Memory Type | EPROM (UV-erasable windowed CERDIP option) |
| Корпус | 18-pin PDIP (P) |
| Тип монтажа | Through-Hole |
| Рабочая температура | 0C to +70C (Commercial) |
| Power-on Reset | Yes |
| Interrupt Controller | None (baseline PIC16C5X family has no interrupts) |
Конфигурация выводов PIC16LC56A-04/P
| Контакт 1 | /MCLR — Master Clear (active-low reset input) |
| Контакт 2 | RA0 — Port A bit 0 (digital I/O) |
| Контакт 3 | RA1 — Port A bit 1 (digital I/O) |
| Контакт 4 | RA2 — Port A bit 2 (digital I/O) |
| Контакт 5 | RA3 — Port A bit 3 (digital I/O) |
| Контакт 6 | RB0/INT — Port B bit 0 (digital I/O) |
| Контакт 7 | RB1 — Port B bit 1 (digital I/O) |
| Контакт 8 | RB2 — Port B bit 2 (digital I/O) |
| Контакт 9 | RB3 — Port B bit 3 (digital I/O) |
| Контакт 10 | RB4 — Port B bit 4 (digital I/O) |
| Контакт 11 | RB5 — Port B bit 5 (digital I/O) |
| Контакт 12 | RB6 — Port B bit 6 (digital I/O) |
| Контакт 13 | RB7 — Port B bit 7 (digital I/O) |
| Контакт 14 | VSS — Ground reference |
| Контакт 15 | OSC2/CLKOUT — Oscillator output / clock-out |
| Контакт 16 | OSC1/CLKIN — Oscillator input / external clock in |
| Контакт 17 | VDD — Positive supply |
| Контакт 18 | VDD — Positive supply (tied to pin 17) |
Типичное применение
PIC16LC56A-04/P подходит для 6 применениеs: Low-Cost Consumer Appliance Controller, Automotive Body Control Module (Legacy), Industrial Timer and Counter, HVAC Control Board, Remote Control / RF Transmitter, Security Alarm Panel.
Low-Cost Consumer Appliance Controller
The PIC16LC56A-04/P fits appliance control boards because its 1.5 KB EPROM and 12 I/O are sufficient for sequencing relays, reading tactile buttons, and driving 7-segment LED displays. At 4 MHz with 1 us instruction cycle, the MCU can refresh displays at 100 Hz while polling inputs. The 3.0-6.25 V supply range lets it run directly from rectified mains or a 5 V regulator. The baseline architecture has no interrupts, so timing-critical loops must be polled, simplifying code review for safety-critical white goods.
Рекомендуется
Automotive Body Control Module (Legacy)
Automotive body controllers for seat, mirror, or window functions historically used baseline PIC16C5X devices because of their deterministic interrupt-free architecture and wide temperature variants. The PIC16LC56A-04/P provides 12 I/O sufficient for motor direction relays and limit-switch inputs. The -04 grade runs at 4 MHz which is adequate for slow body-control loops. For new automotive designs, prefer AEC-Q100 qualified PIC16F series; the PIC16LC56A is suitable only for maintaining legacy installed base.
Рекомендуется
Industrial Timer and Counter
The PIC16LC56A-04/P's on-chip 8-bit RTCC with 8-bit prescaler makes it well suited for industrial timing applications such as conveyor sequencers, machine-cycle counters, and process timers. The 12 I/O can directly drive 24 V optically isolated inputs and outputs via external optocouplers. The wide 3.0-6.25 V supply range accepts regulated 24 V industrial rails down-converted to 5 V. Industrial variants (-04I/P) extend the operating temperature to -40C to +85C for factory environments.
Рекомендуется
HVAC Control Board
HVAC thermostats and damper controllers use baseline PIC16C5X MCUs because the deterministic instruction execution simplifies thermal-loop timing analysis. The PIC16LC56A-04/P provides 12 I/O sufficient for fan relay control, temperature sensor sampling via external ADC, and triac firing. The 3.0 V minimum supply lets the MCU operate from a single-cell lithium backup battery during power-outage thermostat operation. Watchdog timer with on-chip RC oscillator prevents code lockup from EMI on long HVAC wiring.
Рекомендуется
Remote Control / RF Transmitter
Simple RF remote controls (garage-door openers, key fobs, security transmitters) are a classic application for PIC16LC56A-04/P because the device only needs to scan a button matrix and generate a fixed-code or rolling-code transmission. The 12 I/O can read up to 12 buttons; 1.5 KB EPROM stores the encoding table. The 3.0 V minimum supports coin-cell or two-AA battery operation. Baseline architecture has no interrupts so transmission timing is jitter-free, simplifying FCC / ETSI emission compliance.
Рекомендуется
Security Alarm Panel
The PIC16LC56A-04/P's watchdog timer and Power-on Reset make it a viable controller for wired security alarm panels that monitor door/window sensors and drive a siren. Twelve I/O can read up to 12 zones (with external diode matrixing, more). The deterministic 4 MHz execution ensures consistent loop time for tamper detection. The wide supply range accepts backup-battery operation. Baseline architecture has no interrupts so all event handling is polled, simplifying safety certification of the alarm logic.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16LC56A-04/P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16C56A-04/P | PIC16LC56A-04I/P | PIC16C54A-04/P | PIC16C58A-04/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP (P) | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Program Memory | 1.5 KB EPROM | 1.5 KB EPROM | 1.5 KB EPROM | 0.75 KB EPROM (-50%) | 2 KB EPROM (+33%) |
| RAM Size | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 73 bytes (+192%) |
| Max Clock Frequency | 4 MHz | 10 MHz (+150%) | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 3.0 V to 6.25 V | 4.5 V to 5.5 V (narrower) | 3.0 V to 6.25 V | 3.0 V to 6.25 V (LC) or 4.5-5.5 V (C) | 3.0 V to 6.25 V (LC) or 4.5-5.5 V (C) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | 0C to +70C (Commercial) | 0C to +70C | -40C to +85C (Industrial) | 0C to +70C | 0C to +70C |
Ключевые отличия
- Wider supply voltage range than the C-variant (против PIC16C56A-04/P)
- Industrial temperature option exists in the same package (против PIC16C56A-04/P (commercial only))
- Baseline architecture with no interrupts for deterministic code review (против PIC16F84A flash MCU)
Заметки по проектированию
Estimated: at 4 MHz and 5 V supply the PIC16LC56A-04/P draws approximately 2 mA active and 1 uA standby per the PIC16C5X datasheet. Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 17, tied to pin 18) and a 10 uF bulk capacitor near the regulator. For battery-powered designs, switch the supply off via a P-MOSFET controlled by the watchdog timer to achieve sub-microamp sleep current.
The baseline PIC16C5X family has NO interrupt controller. All event handling must be polled in the main loop. Do not write ISR code - it will silently never execute. Also note that /MCLR (pin 1) must be tied to VDD through a 10 kohm resistor; leaving it floating causes intermittent resets. The CONFIG word must be programmed to select the oscillator mode (RC, XT, HS, LP) - unconfigured parts will not start.
Route the oscillator traces (pins 15 OSC2 and 16 OSC1) as short as possible, with the crystal or resonator within 5 mm of the package. Keep oscillator traces away from I/O switching lines to avoid coupling. Place a ground guard ring around the crystal and a 100 nF capacitor on the /MCLR pin. For RC oscillator mode, place the timing resistor and capacitor close to OSC1. PDIP package allows easy breadboard prototyping.
Информация о соответствии
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications requiring AEC-Q100, use PIC16F1827 or similar flash MCU. Lead-free matte-tin finish on PDIP pins.
