PIC16F689-E/P - 8-Bit 20 MHz Flash MCU | Microchip
Артикул: PIC16F689-E/P ✓ АктивенPIC16F689-E/P Обзор
A flash-based microcontroller is a programmable semiconductor that stores its application code in nonvolatile Flash memory instead of mask-programmed or one-time-programmable ROM. The PIC16F689 belongs to the PIC16 mid-range family, using the PIC architecture with a 14-bit program word and an RISC-like instruction set. Within the embedded-control hierarchy, this device is a microcontroller IC combining CPU, Flash program memory, RAM, EEPROM, oscillators, and parallel I/O in one package.
The verified product data identifies the device as an 8-bit MCU with 20 MHz maximum clock speed, 7 KB Flash, 256 bytes of RAM, 12 I/O pins, and an operating supply range of 2.0 V to 5.5 V. The -E portion denotes the -40 °C to +85 °C commercial temperature grade, while /P identifies the through-hole PDIP package. The -40 °C to +85 °C grade interpretation comes from the ordering-code convention and should be confirmed against the manufacturer datasheet before release.
The PIC16F689-E/P is suited to compact embedded controllers, industrial automation modules, instruments, motor and relay interfaces, and low-to-medium-speed control panels. Its 12 available I/O pins support digital sensors, switches, indicators, displays, and actuator interfaces, while the 256-byte RAM accommodates working variables and short data buffers. On-board EEPROM allows calibration values, configuration parameters, and serial identifiers to be retained without external memory.
The 20-pin PDIP package favors through-hole assembly, prototype development, repair, and designs where socketed or manually soldered parts are preferred. PCB layout should preserve the datasheet pin functions for MCLR, programming, oscillator connections, supply rails, and I/O. Decoupling requirements, oscillator configuration, programming pins, and unused-pin treatment must be taken directly from the Microchip PIC16F689 datasheet rather than inferred from generic PIC16 guidance.
For a new design, select this exact -E/P ordering code when the required commercial temperature grade and 20-pin through-hole footprint are mandatory. The -I/P ordering variant may suit a wider industrial temperature grade, while surface-mount and QFN variants require different PCB footprints and are not drop-in replacements. This page consolidates distributor listings, manufacturer specifications, package constraints, and practical engineering guidance into a source-traceable selection reference.
Аналоги без доработки для PIC16F689-E/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 PIC16F689-E/P (тот же форм-фактор и посадочное место) — отличается по Package.
PIC16F689-I/P
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Открыть даташит →PIC16F689-E/P Максимальные параметры и электрические характеристики
| Microcontroller Type | 8-bit PIC mid-range flash microcontroller |
| Maximum Clock Speed | 20 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 256 bytes |
| Data Memory | On-board EEPROM |
| I/O Pin Count | 12 I/O pins |
| Operating Supply Voltage Range | 2.0 V to 5.5 V |
| Rated Supply Voltage | 5 V |
| Architecture | PIC mid-range x14 architecture |
| Program Word Width | 14 bits |
| Корпус | 20-pin PDIP |
| Package Type | Through-hole PDIP |
| Тип монтажа | Through-hole |
| Статус жизненного цикла | Active |
Конфигурация выводов PIC16F689-E/P
| Контакт 1 | MCLR/VPP — Master clear reset and programming voltage input; verify multiplexed functions in datasheet |
| Контакт 2 | RA5 — Port A digital I/O pin |
| Контакт 3 | RA4 — Port A digital I/O pin |
| Контакт 4 | RA3 — Port A digital I/O pin |
| Контакт 5 | RA2 — Port A digital I/O pin |
| Контакт 6 | RA1 — Port A digital I/O pin |
| Контакт 7 | RA0 — Port A digital I/O pin |
| Контакт 8 | RE0 — Port E digital I/O pin |
| Контакт 9 | RE1 — Port E digital I/O pin |
| Контакт 10 | RE2 — Port E digital I/O pin |
| Контакт 11 | VDD — Positive supply voltage |
| Контакт 12 | VSS — Ground reference |
| Контакт 13 | OSC1 — Oscillator input or clock-source function |
| Контакт 14 | OSC2 — Oscillator output or clock-source function |
| Контакт 15 | RC0 — Port C digital I/O pin |
| Контакт 16 | RC1 — Port C digital I/O pin |
| Контакт 17 | RC2 — Port C digital I/O pin |
| Контакт 18 | RC3 — Port C digital I/O pin |
| Контакт 19 | RC4 — Port C digital I/O pin |
| Контакт 20 | RC5 — Port C digital I/O pin |
Типичное применение
PIC16F689-E/P подходит для 6 применениеs: Industrial Automation and Relay Control, Digital Instrumentation and Data Acquisition, Motor Control and Actuator Interface, Battery-Powered Sensor Node, LED Signage and Display Control, Networked Monitoring and Communications Hub.
Industrial Automation and Relay Control
The PIC16F689-E/P fits compact industrial relay-control modules because its 12 I/O pins can operate discrete inputs, status LEDs, and relay drivers while the 20 MHz CPU handles control logic. Its 7 KB of Flash provides room for application code and the 256 bytes of RAM cover working variables. The 2.0 V to 5.5 V operating range supports both 5 V logic and lower-voltage sensor interfaces. Because the device is supplied in a 20-pin PDIP package, it also suits prototype controllers, repairable modules, and through-hole industrial equipment where manual assembly is valuable. Design the relay drivers with the voltage and current limits specified by the PIC16F689 datasheet, and isolate any mains-connected circuitry appropriately.
Рекомендуется
Digital Instrumentation and Data Acquisition
The PIC16F689-E/P is suitable for front-end instrumentation in which a microcontroller scans switches, drives a display, and manages a modest measurement pipeline. Its 12 I/O pins can be allocated among digital sensors, status indicators, and control outputs, while the 256 bytes of RAM supports temporary acquisition data. The device's Flash program memory is reprogrammable and the on-board EEPROM can retain calibration constants or instrument identification without an external memory chip. For analog measurement, add an external ADC and interface through the available I/O. Confirm pin multiplexing, analog-function availability, and converter interface details in the PIC16F689 datasheet rather than assuming functions from another PIC16 device.
Рекомендуется
Motor Control and Actuator Interface
The PIC16F689-E/P can serve as the sequencing controller for small motors, valves, solenoids, and stepper systems where its 20 MHz performance provides more timing headroom than the simplest low-end MCU. Its 12 I/O pins support pulse outputs, direction control, limit switches, and fault inputs, while on-board EEPROM can preserve travel limits, calibration values, or a saved setup. The application is most appropriate when the main requirement is deterministic I/O sequencing rather than intensive motion computation. Use transistor or MOSFET driver stages rather than driving inductive loads directly, include flyback protection, and confirm absolute maximum pin ratings against the PIC16F689 datasheet. Through-hole packaging also simplifies initial actuator prototypes and field replacement.
Рекомендуется
Battery-Powered Sensor Node
The PIC16F689-E/P can serve as the supervisory controller of a low-power sensor node where sensors, indicators, and a communications module are switched selectively. Its 2.0 V to 5.5 V operating range provides flexibility for battery-derived rails, and its Flash program memory supports field updates and stored configuration logic. On-board EEPROM is useful for keeping device identity, calibration values, and wake-state counters across power cycles. The 20-pin PDIP package is most attractive for prototypes, daughterboards, and through-hole sensor assemblies rather than space-constrained miniaturized products. Detailed sleep-current, wake-up-time, oscillator-startup, and peripheral shutdown figures must be confirmed from the manufacturer datasheet before estimating battery life.
Рекомендуется
LED Signage and Display Control
The PIC16F689-E/P is appropriate for small LED sign controllers, panel sequencers, and status-display products where multiple outputs must be refreshed or multiplexed under deterministic timing. Twelve I/O pins can drive character segments, discrete LEDs, key switches, or mode controls, while the 20 MHz clock and 7 KB Flash provide ample code space for animation tables and communication routines. On-board EEPROM can retain brightness settings, displayed messages, or installation identifiers. The through-hole PDIP package simplifies building the controller in a rugged hand-assembled enclosure. Validate drive current, multiplexing refresh rate, and any duty-cycle restrictions from the PIC16F689 datasheet, and use current-limiting resistors or constant-current drivers rather than driving LED junctions directly from MCU pins.
Рекомендуется
Networked Monitoring and Communications Hub
The PIC16F689-E/P can supervise a small communications hub that collects local status inputs and controls serial interfaces, relays, or indicators. Its 12 I/O pins provide a practical mix of control signals and serial functions, while 256 bytes of RAM and 7 KB of Flash suit protocol framing and state-machine firmware. On-board EEPROM can retain endpoint identifiers and configuration records. Choose this device when a compact through-hole module and simple status control are more valuable than high-speed networking. Add a dedicated transceiver such as an RS-485 or CAN interface rather than driving communication lines directly from the MCU. Verify the availability and multiplexing of the relevant serial pins in the datasheet, and validate protocol timing with a margin above the 20 MHz clock requirement.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC16F689-E/P — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC16F689-I/P |
|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same footprint |
| Brand | Microchip Technology | Microchip Technology |
| CPU Architecture | 8-bit PIC mid-range architecture | 8-bit PIC mid-range architecture |
| Maximum Clock Speed | 20 MHz | 20 MHz |
| Program Memory | 7 KB Flash (4K x 14 words) | 7 KB Flash (4K x 14 words) |
| RAM | 256 bytes | 256 bytes |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 12 I/O pins | 12 I/O pins |
| Data Memory | On-board EEPROM | On-board EEPROM |
| Temperature Ordering Code | -E commercial grade | -I industrial ordering grade |
| Mounting Style | Through-hole | Through-hole |
Ключевые отличия
- Through-hole 20-pin PDIP package (против PIC16F689-I/ML)
- Direct replacement within the same package family (против PIC16F689-E/SO)
- Compact embedded-control resource set (против PIC16F689-I/P)
Заметки по проектированию
Place the required supply bypass capacitors directly between VDD and VSS at the package pins, using the values, dielectric, and placement guidance specified by the Microchip PIC16F689 datasheet. Because the device supports 2.0 V to 5.5 V, confirm that the regulator output, external components, and any 5 V peripherals tolerate the selected rail. Do not infer the E-grade's exact temperature endpoints from the supply range; verify all operating and electrical limits before production release.
Reserve the MCLR/VPP programming path for normal reset and in-circuit programming, and follow the manufacturer's recommended programming-pad arrangement and isolation components. Keep oscillator traces short and isolate them from switching and relay-drive nodes. The 20-pin PDIP footprint provides generous routing space, but the 12 available I/O pins must be allocated only after checking their peripheral-function multiplexing in the datasheet.
Do not treat the PIC16F689-E/SO or PIC16F689-I/ML ordering variants as PCB drop-ins for the /P version: the verified comparison results identify SOIC surface-mount and QFN packages rather than the 20-pin PDIP footprint. Also avoid selecting an alternative based on memory size alone; the -I/P candidate is credible because it preserves the base device and package, while the supplied evidence does not establish a pin-compatible cross-manufacturer substitute.
Информация о соответствии
The supplied verified results identify the part as active and a 20-pin PDIP PIC microcontroller but do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields remain unknown rather than being inferred from the package or manufacturer.
