CS82C59A - CMOS Priority Interrupt Controller | Renesas
MPN: CS82C59A ✗ Son Kullanım ZamanıCS82C59A Genel Bakış
A programmable interrupt controller is an interface IC that manages multiple peripheral interrupt requests on behalf of a central processing unit. Instead of polling every peripheral, the processor receives one interrupt request from the controller and reads a priority register to identify the source. In the broader semiconductor hierarchy, the CS82C59A belongs to the interface-controller family and reduces processor overhead in embedded and industrial control systems.
The controller provides eight interrupt inputs, allowing eight interrupt sources to share a processor interrupt line. Cascaded operation supports expansion beyond the base interrupt count, while the industry-standard configuration accommodates common 8-bit and 16-bit processor interrupt architectures. The CMOS implementation combines low-power operation with the operating characteristics expected from the original 82C59A family.
The CS82C59A was manufactured on an advanced 2 µm CMOS process. Its interrupt logic is intended to provide high performance in multilevel priority systems by removing the need for continuous software polling. Exact clock, propagation-delay, supply-voltage and current limits require confirmation against the manufacturer datasheet before a new high-speed or low-power design is released.
Typical applications include industrial controller cards, embedded processor platforms, data-acquisition systems, peripheral-interface boards and legacy-compatible industrial equipment. A suitable design connects interrupt sources to the controller inputs, programs the required priority and mask configuration, and connects the controller output to the processor interrupt mechanism. System firmware must preserve the established interrupt-acknowledge sequence.
The principal design consideration is architectural rather than thermal: the CS82C59A is a legacy peripheral built around an established interrupt convention. Before placing it in a new design, verify processor timing, acknowledge protocol, voltage compatibility and package availability against the intended processor and peripheral environment.
This page organizes the controller's role, package, documented processor compatibility, application guidance and verified substitute information. It also identifies where timing, electrical limits and lifecycle details must be checked directly in the manufacturer documentation before schematic release.
Drop-in alternatifler için CS82C59A — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
CS82C59A-12
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CS82C59A-5
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CS82C59A-2
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CS82C59A Özellikler
| Product Type | CMOS priority interrupt controller |
| Manufacturing Process | 2 µm CMOS |
| Number of Interrupt Inputs | 8 inputs |
| Supported Priority Levels | Multilevel priority system |
| Cascading Support | Supported |
| Paket | 28-pin PLCC (11.51 mm × 11.51 mm) |
| Montaj Türü | Surface mount |
| Processor Compatibility | 80C286, 80286, 80C86/88, 8086/88, 8080/85 and NSC800 |
| Architecture | Industry-standard 82C59A configuration |
CS82C59A 28-pin plcc (11.51 mm × 11.51 mm) Pin Yapısı Kılavuzu
CS82C59A (28-pin plcc (11.51 mm × 11.51 mm) paket) için pin yapısı. Pin numaralandırma, işlevleri ve bağlantı şemaları üretici veri kitapçığında tanımlanmıştır. Doğru ayak ve soldurma kılavuzları için onu referans alın.
Ayrıntılı pin çıkış verisi mevcut değil: CS82C59A.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
CS82C59A için uygundur 6 uygulamas: Industrial Process Controller, Embedded Processor Platform, Data Acquisition System, Multilevel Peripheral Interface, Peripheral Expansion Card, Legacy Control System Upgrade.
Industrial Process Controller
The CS82C59A fits industrial process controllers that must service multiple peripheral interrupts without polling every subsystem continuously. Its eight interrupt inputs can represent sensors, communication interfaces, timers and alarm blocks, while the programmable priority arrangement lets critical events receive earlier service than lower-priority tasks. The manufacturer identifies compatibility with processors including the 80C286, 80286, 80C86/88 and 8086/88, making it useful for established controller architectures. Place the 28-pin PLCC device close to the processor and interrupt-source circuitry, and preserve the established acknowledge sequence in firmware. Although the controller simplifies interrupt arbitration, production designs should also confirm operating-temperature limits, electrical timing and current procurement status against the official Renesas 82C59A datasheet.
Önerilen
Embedded Processor Platform
The CS82C59A is appropriate for embedded systems in which numerous peripherals need interrupt-driven service. Instead of repeatedly reading peripheral status registers, the CPU can respond to a prioritized request and execute the corresponding handler. The controller's eight inputs cover a useful range of embedded resources such as timers, serial ports, storage controllers and external events. Cascading can extend the architecture when more sources are required, although the board-level interrupt and acknowledge arrangement must follow the processor platform's established convention. The 28-pin PLCC package supports compact legacy controller boards, but designers should treat processor timing and interrupt latency as release-critical checks. The manufacturer datasheet should be used to confirm all edge timing, masking and acknowledgment details for the selected speed grade.
Önerilen
Data Acquisition System
A CS82C59A can coordinate interrupt requests from data-acquisition front ends, converters, memory modules and communication peripherals in a legacy measurement platform. Eight dedicated interrupt inputs allow the acquisition controller to report completion events efficiently, and the priority structure ensures that time-sensitive events are serviced ahead of lower-priority housekeeping. This is particularly useful when continuous polling would consume processor time or distort the intended measurement sequence. The CS82C59A should be used only where the host processor supports the documented 82C59A acknowledge protocol and suitable interrupt levels. Verify conversion and transfer timing at the system level because the controller prioritizes requests but does not define the acquisition algorithm. PCB signal integrity and interrupt routing also deserve careful review in multi-channel analog and digital systems.
Önerilen
Multilevel Peripheral Interface
The CS82C59A is designed for multilevel peripheral priority arrangements, making it suitable for boards combining high-priority service requests with routine background events. Interrupt sources can be grouped behind the eight controller inputs, and cascading extends the architecture when additional controller stages are required. This allows a processor interface to retain a recognizable industrial-computing convention rather than implementing a bespoke arbitration circuit. Firmware must maintain the controller's priority, mask and acknowledge conventions when servicing requests. Because the device implements established 82C59A behavior, the surrounding processor, peripheral drivers and bus timing should be checked together rather than treated as isolated blocks. For new production programs, component lifecycle and supply continuity also need confirmation before the controller is committed to a long-life industrial platform.
Önerilen
Peripheral Expansion Card
The CS82C59A is useful on legacy peripheral expansion cards that must coordinate several devices sharing a processor interrupt line. A card containing communication ports, timers, counters and status registers can use the controller to establish priority and prevent individual devices from monopolizing the processor interrupt input. The 28-pin PLCC package is suitable for compact card layouts, while the documented compatibility list supports systems built around 8080/85, 8086/88, 80C86/88 and 80C286 processors. The card designer must preserve the controller's initialization sequence and ensure that each peripheral uses the appropriate request, acknowledge and masking behavior. Validate timing for the slowest supported processor because a speed-grade change can alter the available timing margin. Component condition and traceable supply planning are essential when inserting this specialized controller into a long-lived expansion system.
Önerilen
Legacy Control System Upgrade
The CS82C59A can support selective upgrades to legacy industrial and embedded control systems that retain an 82C59A interrupt architecture. Instead of replacing the processor subsystem, an engineer can maintain the established priority-interrupt behavior while refurbishing the controller section with a documented same-family variant. This reduces board redesign risk when the replacement uses the same 28-pin PLCC footprint and retains the established acknowledge sequence. The design must still undergo timing, interrupt-latency and processor-level compatibility tests because a speed suffix can change timing margins without changing the external architecture. Confirm environmental requirements and lifecycle status separately for each candidate ordering code. This approach is best for maintenance and compatibility-focused programs rather than new platforms that could use a modern programmable interrupt controller with a broader software ecosystem.
Önerilen
Önerilen Ürünler Özeti
Mühendislik referans verileri: CS82C59A — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | CS82C59A-12 | CS82C59A-5 | CS82C59A-2 |
|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 28-PLCC (11.51 mm × 11.51 mm) | 28-PLCC (11.51 mm × 11.51 mm) | 28-PLCC (11.51 mm × 11.51 mm) | 28-PLCC (11.51 mm × 11.51 mm) |
| Product Type | CMOS priority interrupt controller | CMOS priority interrupt controller | CMOS priority interrupt controller | CMOS priority interrupt controller |
| Interrupt Inputs | 8 inputs | 8 inputs | 8 inputs | 8 inputs |
| Manufacturing Process | 2 µm CMOS | 2 µm CMOS | 2 µm CMOS | 2 µm CMOS |
| Priority Architecture | Multilevel priority system | Multilevel priority system | Multilevel priority system | Multilevel priority system |
| Documented Processor Compatibility | 80C286, 80286, 80C86/88, 8086/88, 8080/85 and NSC800 | 82C59A family processor configuration | 82C59A family processor configuration | 82C59A family processor configuration |
| Speed-Grade Suffix | No suffix | -12 | -5 | -2 |
| Cascading Support | Supported | Supported | Supported | Supported |
Ana Farklılayıcılar
- Exact CS82C59A ordering code for legacy-compatible designs (karşılaştırma:CS82C59A-12)
- Established eight-input multilevel priority architecture (karşılaştırma:CS82C59A-5)
- Documented compatibility with major legacy processor families (karşılaştırma:CS82C59A-2)
Tasarım Notları
Treat the processor acknowledge sequence as part of the device interface rather than as ordinary firmware polling. Initialize the controller according to the official 82C59A datasheet, preserve the expected interrupt-acknowledge timing and test every priority level. A PCB that appears electrically correct can still fail when software changes mask, priority or cascading settings without following the established 82C59A convention.
Route interrupt-request and acknowledge paths away from noisy switching nodes and analog timing edges. These signals connect external peripheral devices to the processor timing domain, so excessive trace capacitance, series impedance or crosstalk can create false requests or delayed acknowledgments. Use a continuous ground reference, minimize loop area and inspect the assembled board with an appropriate edge-triggered oscilloscope setup when interrupt timing is critical.
Place the 28-pin PLCC controller close to the processor interface and maintain the footprint defined by the package drawing in the manufacturer documentation. Confirm pin numbering, orientation and exposed component clearance against the actual ordering code before layout release. Since a complete pin map was not established for this package, do not derive PCB connections from package position alone; use the datasheet pin-description table and verify continuity after assembly.
Confirm the controller's required supply range, input thresholds and power-consumption limits against the manufacturer datasheet before assigning the surrounding power tree. The 2 µm CMOS process identifies the original manufacturing generation but does not by itself specify the present ordering code's voltage tolerance. Provide stable supply and appropriate decoupling, and account for legacy-versus-modern processor interface levels when designing the board.
Uyumluluk Bilgisi
The manufacturer description confirms the 2 µm CMOS process but does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals or AEC-Q100 status for the exact ordering code.
