CS82C54 - 8 MHz Programmable Timer | 28-PLCC | Renesas
Артикул: CS82C54 ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $4.5477 | $4,55 |
| 10 | $4.5477 | $45,48 |
| 100 | $4.5477 | $454,77 |
| 500 | $4.5477 | $2.273,85 |
| 1.000 | $4.5477 | $4.547,70 |
CS82C54 Обзор
A programmable interval timer is a clock-and-timing semiconductor that divides or counts input-clock pulses and reports events through counter values, status signals, and programmable outputs. The CS82C54 belongs to the broader timer and counter IC hierarchy, where multiple channels provide independent timing or event-counting functions under a common control interface.
The device provides three independently programmable 16-bit counters, binary or BCD counting, status readback, and compatibility with NMOS 8254 operation. Each counter can select among six operating modes, allowing engineers to implement simple event counting, rate division, square-wave generation, one-shot timing, and retriggerable or triggered monostable behavior. The verified 8 MHz version supports clock inputs up to 8 MHz.
Its 28-pin PLCC package provides a legacy-compatible surface-mount footprint, while the parallel control and data interface supports connection to microprocessor address, data, read/write, chip-select, reset, and clock buses. Because this is a digital integrated circuit rather than a power semiconductor, a Safe Operating Area chart is not applicable.
Typical uses include industrial controller timing, event-counting modules, embedded system peripherals, waveform generation, and service as a hardware timer for legacy 8254-compatible systems. Engineers should verify the complete datasheet pinout, supply limits, timing values, electrical characteristics, and package details before production use, because several of those values are not included in the supplied search record.
This product page combines the verified 8 MHz and 28-PLCC identifiers with sourced cross-reference information and explicitly marks unavailable technical data. It is intended to help engineers locate the datasheet, assess procurement options, verify compatibility, and plan validation before substituting or implementing the timer.
Аналоги без доработки для CS82C54 — 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 CS82C54 (тот же форм-фактор и посадочное место) — отличается по Legacy Compatibility, RoHS Status.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
CS82C54Z96
✅ Прямая замена✓ В наличии
$10.85 / шт.
Открыть даташит →82C54-10
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
82C54-12
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
CS82C54Z96
✅ Прямая замена✓ В наличии
$10.85 / шт.
Открыть даташит →CS82C54-10Z96
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
CS82C54 Характеристики
| Product Type | CMOS programmable interval timer |
| Number of Counters | 3 |
| Counter Width | 16 bit |
| Maximum Clock Input Frequency | 8 MHz |
| Programmable Counter Modes | 6 |
| Counting Formats | Binary or BCD |
| Status Readback | Supported |
| Legacy Compatibility | Compatible with NMOS 8254 |
| Process Technology | Advanced 2 micron CMOS process |
| Корпус | 28-pin PLCC |
| Package Body Size | 11.51 mm x 11.51 mm |
| Тип монтажа | Surface mount |
| Статус RoHS | unknown |
| REACH Status | unknown |
Руководство по цоколевке CS82C54 в корпусе 11.51 mm x 11.51 mm
Цоколевка для CS82C54 (корпус 11.51 mm x 11.51 mm). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для CS82C54.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
CS82C54 подходит для 6 применениеs: Industrial Event Counting, Microprocessor Timer Peripheral, Periodic Waveform Generation, Data-Acquisition Triggering, Embedded System Frequency Divider, Legacy 8254-Compatible Control Card.
Industrial Event Counting
The CS82C54 fits industrial event-counting modules where pulses from switches, encoders, or sensors must be accumulated and periodically read by a controller. Its three independent 16-bit counters allow separate channels for different event sources, while the verified 8 MHz input limit supports high-rate counting. Six operating modes provide flexibility for counting, rate division, and periodic output functions. In implementation, connect one counter to the event source, configure the mode and count value through the parallel control interface, and poll or latch status as required. Validate signal levels, debounce behavior, counter rollover handling, and isolation before using the timer in industrial equipment.
Рекомендуется
Microprocessor Timer Peripheral
The CS82C54 provides three hardware timing channels for legacy microprocessor and controller systems that need deterministic interval or elapsed-time measurement. Each channel has a 16-bit counter and access to six programmable modes, reducing the software burden associated with continuous timing loops. The device is suitable when the host must address and read the timer through a parallel bus and needs fixed event timing independently of firmware execution. Design the address decode, read/write control, reset, and clock source so that the timer channel ownership is unambiguous. Confirm bus timing and signal levels against the official datasheet because those electrical limits are not present in the supplied search summary.
Рекомендуется
Periodic Waveform Generation
The CS82C54 can generate periodic and programmable waveforms by combining its 16-bit counters, programmable modes, and output signals. This is useful in legacy control systems that need a continuous frequency divider, square-wave reference, or timing pulse without dedicating a processor output pin. The verified 8 MHz maximum input frequency provides a basis for shorter programmable periods, while six modes allow selection between simple rate division and more specialized triggered behavior. Route counter outputs through appropriate buffering, confirm output-drive assumptions, and preserve a defined state during reset. Scope timing edges and duty-cycle behavior in the final design because output timing and propagation values require confirmation from the official manufacturer datasheet.
Рекомендуется
Data-Acquisition Triggering
The CS82C54 can act as a trigger or interval source in data-acquisition systems that need repeatable sampling windows or synchronized timing events. Its three independent 16-bit channels allow acquisition trigger, measurement interval, and auxiliary countdown functions to share one programmable timer. The 8 MHz clock capability is relevant when the controller must resolve relatively short timing intervals, although the minimum valid pulse width and counter timing margins must be checked in the datasheet. Define trigger polarity, reset behavior, and rollover semantics before connecting it to converters or interface hardware. Use the timer as a timing reference rather than assuming it performs level conversion or isolation.
Рекомендуется
Embedded System Frequency Divider
The CS82C54 is useful as a frequency-divider and programmable time-base peripheral in embedded equipment built around a parallel processor bus. A selected 16-bit counter can reduce a clock stream into a slower periodic signal, while the remaining channels can handle independent timing functions. This is particularly useful when firmware needs a repeatable service interval without tying up a high-frequency processor timer. Choose the input clock carefully, account for counter loading and edge timing, and avoid using a divider output where a failure could create unsafe control behavior. Validate reset startup and output-state requirements with a bench test using the exact package and system clock arrangement.
Рекомендуется
Legacy 8254-Compatible Control Card
The CS82C54 is a logical choice for maintaining or repairing legacy 8254-compatible control cards because the supplied comparison data explicitly identifies NMOS 8254 compatibility and the family provides three independent 16-bit counters with six modes. It can preserve an established parallel-bus timing architecture without requiring a software timer for every event. Compatibility must be confirmed at the package and electrical level, especially for boards using exposed-edge, read/write timing, or signal-level assumptions inherited from older 8254 devices. Before fitting the timer, inspect the original schematic for pin assignments and compare every connected signal with the current Renesas datasheet. For production repairs, validate readback, mode transitions, rollover, and all three counter outputs under representative loads.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для CS82C54 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | 82C54 | 82C54-10 | 82C54-12 | CS82C54Z | CS82C54-10Z96 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Counter Count | 3 | 3 | 3 | 3 | 3 | 3 |
| Counter Width | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Maximum Clock Input Frequency | 8 MHz | 8 MHz | 10 MHz | 12 MHz | 8 MHz | 10 MHz |
Ключевые отличия
- Three independent timing channels (против Intel 8254)
- Eight-megahertz family operating point (против 82C54-10)
- CMOS implementation with six counter modes (против NMOS 8253)
Заметки по проектированию
Treat the 28-PLCC footprint as a legacy-land-pattern problem and verify every pin against the current Renesas datasheet before routing or replacement. The search record confirms an 11.51 mm by 11.51 mm PLCC package, but it does not provide individual pin names or numbering. Preserve the original clock, reset, read/write, chip-select, bus, counter-output, and supply connections, and check whether any alternate suffix changes temperature, qualification, or marking requirements.
Keep the 8 MHz clock source and counter connections away from noisy switching nodes, because clock-edge jitter and false triggering affect the effective count ratio. Use short traces, a stable return path, and appropriate termination or buffering where the source is not adjacent. Confirm the official input pulse-width, setup, hold, and propagation specifications before selecting buffer delay or fan-out components.
Do not confuse the 82C54, 82C54-10, and 82C54-12 speed grades. The verified Renesas listing identifies maximum clock inputs of 8 MHz, 10 MHz, and 12 MHz respectively. A faster grade may change timing margins but does not by itself prove that every electrical, temperature, qualification, or package detail is interchangeable. Validate the exact suffix against the system clock and qualification requirements.
Информация о соответствии
The supplied verified search results do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim is inferred.
