PI7C9X754FCEX - 4-Channel UART Controller | Diodes Incorporated
MPN: PI7C9X754FCEX ✓ सक्रियPI7C9X754FCEX अवलोकन
A UART is a Universal Asynchronous Receiver/Transmitter, a serial-interface controller that converts parallel data from a processor into framed serial transmissions and converts received serial data into parallel data. The PI7C9X754 belongs to the broader hierarchy of interface controllers, communication ICs, and semiconductors. Its four independent channels let one controller manage multiple serial links while sharing a host data bus and interrupt interface.
The PI7C9X754FCEX uses 16C550-compatible registers, giving firmware a familiar programming model. Each UART includes 64-byte transmit and receive FIFOs, FIFO level counters, and programmable transmit and receive trigger levels. Those trigger levels support interrupt-driven transfers or DMA operation, reducing the need for the host processor to service every received byte individually.
The controller supports both Intel and Motorola data-bus interfaces, allowing it to operate with processors using either timing convention. It also provides automatic wake-up following a sleep mode, making it useful in systems that periodically suspend peripheral activity to reduce power consumption. Its 1.62 V to 3.6 V operating range supports low-voltage embedded systems while the 5 V-tolerant serial inputs broaden interface flexibility.
Typical uses include industrial control panels, multiport data acquisition systems, instrument controllers, embedded test equipment, and communications modules requiring several UART channels. The device is particularly suitable when one processor must service multiple RS485, RS232, IrDA, or other serial links while maintaining orderly FIFO flow control and interrupt handling.
PCB design should preserve the manufacturer's recommended power and ground layout, place decoupling capacitors close to the supply pins, and provide clean high-speed digital routing. The UART is a digital interface IC rather than a power semiconductor, so thermal operating considerations are centered on supply dissipation and signal integrity rather than a safe operating area graph.
This product page organizes the controller's core electrical characteristics, interface functions, application guidance, and practical design considerations into one engineering reference. It also clarifies the distinctions among FIFO behavior, bus compatibility, low-voltage operation, and 5 V-tolerant inputs when evaluating this device for a new multi-channel serial design.
के लिए ड्रॉप-इन विकल्प PI7C9X754FCEX — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस उत्पाद के लिए कोई drop-in alternatives उपलब्ध नहीं।
विकल्प अनुरोध करेंPI7C9X754FCEX Maximum Ratings और Electrical Characteristics
| Product Type | Quad UART controller |
| Number of UART Channels | 4 channels |
| Core Supply Voltage Range | 1.62 V to 3.6 V |
| Serial Input Tolerance | 5 V tolerant |
| Transmit FIFO Depth | 64 bytes per UART |
| Receive FIFO Depth | 64 bytes per UART |
| Register Compatibility | 16C550-compatible register set |
| Host Data Bus Interface | Intel or Motorola selectable |
| Transfer Triggering | Programmable TX and RX FIFO trigger levels |
| FIFO Level Counter | Transmit and receive |
| Processor Transfer Support | DMA and interrupt |
| Low-Power Mode | Programmable sleep mode with automatic wake-up |
| IrDA Support | IrDA 1.1 |
| RS485 Controller Support | Yes |
| पैकेज | 64-LQFP, 10 mm x 10 mm |
| माउंटिंग प्रकार | Surface mount |
PI7C9X754FCEX 64-lqfp, 10 mm x 10 mm पिन कॉन्फ़िगरेशन गाइड
PI7C9X754FCEX (64-lqfp, 10 mm x 10 mm पैकेज) के लिए पिन कॉन्फ़िगरेशन। इस पावर डिवाइस में गेट, ड्रेन और सोर्स टर्मिनल हैं। नॉन-पोलराइज़्ड पैकेज के लिए, सटीक पिन 1 ओरिएंटेशन और फुटप्रिंट विवरण हेतु निर्माता डेटाशीट देखें। सामान्य अनुप्रयोगों में पावर सप्लाई डिज़ाइन, मोटर ड्राइविंग और लोड स्विचिंग शामिल हैं।
इसके लिए कोई विस्तृत pinout data उपलब्ध नहीं: PI7C9X754FCEX.
देखें डेटाशीट पूर्ण पिन कॉन्फ़िगरेशन के लिए।
सामान्य अनुप्रयोग
PI7C9X754FCEX के लिए उपयुक्त है 6 अनुप्रयोगs: Industrial Serial Control Panels, RS485 Multiport Data Acquisition, Embedded Test and Measurement Equipment, Low-Power Embedded Communications Modules, IrDA-Enabled Portable Devices, Interface Expanders for Processor Boards.
Industrial Serial Control Panels
The PI7C9X754FCEX suits industrial control panels that must connect several embedded peripherals to one host processor. Four independent UART channels provide separate baud-rate and framing configurations, while each 64-byte FIFO helps absorb bursts from sensors, scanners, and operator terminals. According to the manufacturer datasheet, programmable TX and RX trigger levels support both interrupt and DMA operation. Designers can therefore reserve processor time for control logic while the controller manages buffered serial traffic. The 1.62 V to 3.6 V core range fits low-voltage embedded processors, and 5 V-tolerant serial inputs broaden compatibility with qualified peripheral logic. External RS485 transceivers or protection networks remain necessary when the panel connects to long-distance, noise-prone industrial buses.
RS485 Multiport Data Acquisition
The PI7C9X754FCEX is appropriate for multiport data-acquisition equipment requiring several RS485-facing UART links. Each of its four UART channels includes a 64-byte receive FIFO, a transmit FIFO, and independent level counters, allowing the host to service channels according to buffered activity instead of polling every port continuously. According to the manufacturer datasheet, selectable Intel or Motorola host-bus timing supports different processor interfaces, while programmable trigger points support DMA and interrupt transfers. In an acquisition system, the IC can receive commands on one channel and collect sensor data on others. Appropriate external RS485 transceivers, isolation, surge protection, and termination must be selected for the installation environment.
Embedded Test and Measurement Equipment
The PI7C9X754FCEX can consolidate host-controlled serial links in embedded test and measurement equipment. Four UART channels allow a single controller to connect instruments, fixtures, and service interfaces without requiring four independent bridge devices. According to the manufacturer datasheet, every channel has independent FIFO resources and a 16C550-compatible register set, while the host can choose interrupt or DMA transfer handling. The 64-byte FIFOs are particularly useful when peripheral responses arrive in short bursts or when firmware must coordinate several instruments. Its 1.62 V to 3.6 V core operation supports embedded logic rails, and 5 V-tolerant serial inputs assist integration with appropriately specified peripheral interfaces. Signal amplitudes and isolation must still be checked at the board level.
Low-Power Embedded Communications Modules
The PI7C9X754FCEX fits communications modules that periodically suspend activity but need to resume serial exchanges without reinitializing every peripheral. According to the manufacturer datasheet, each UART is independently controlled, supports a programmable sleep mode, and can wake automatically. A host processor can leave unused channels asleep while keeping an active channel responsive, helping reduce unnecessary processor wake-ups and peripheral activity. The four-channel configuration supports gateways, local controllers, and compact communications hubs with multiple links. The 1.62 V to 3.6 V supply range is useful for low-voltage embedded designs, while 5 V-tolerant serial inputs improve integration flexibility. Wake sources, reset behavior, and required external level shifters should be reviewed in the system timing design.
IrDA-Enabled Portable Devices
The PI7C9X754FCEX can support portable or short-range products that need IrDA 1.1 alongside conventional serial channels. According to the manufacturer datasheet, the controller supports IrDA 1.1 and four independently controlled UARTs with 64-byte FIFOs. This allows an IrDA link and other UART-based sensors or accessories to share one interface IC while retaining separate channel configuration. The low 1.62 V minimum core supply is favorable for battery-powered embedded logic, and the automatic wake-up function can complement a system that periodically disables communication hardware. IrDA operation also depends on correct optical or transceiver circuitry, baud timing, and transceiver enable sequencing; the UART controller alone does not provide the physical infrared link.
Interface Expanders for Processor Boards
The PI7C9X754FCEX provides a practical way to expand serial I/O on a processor-centric board that has reached the practical limit of its built-in UART channels. Four channels with independent registers and FIFOs preserve separate logical ports for debug, configuration, peripherals, and external equipment. According to the manufacturer datasheet, Intel or Motorola host-bus selection improves processor-platform flexibility, while DMA and interrupt support allow efficient transfer management. The interface IC can operate from a 1.62 V to 3.6 V core rail and accept 5 V-tolerant serial inputs under the specified conditions. Pin assignment, interrupt priority, DMA handshaking, and level translation must be validated against the host processor and the complete system clocking arrangement.
के लिए इंजीनियरिंग संदर्भ डेटा PI7C9X754FCEX — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद |
|---|---|
| Product Type | Quad UART controller |
| Brand | Diodes Incorporated |
| Package | 64-LQFP, 10 mm x 10 mm |
| Number of UART Channels | 4 channels |
| Core Supply Voltage Range | 1.62 V to 3.6 V |
| Serial Input Tolerance | 5 V tolerant |
| Transmit FIFO Depth | 64 bytes per UART |
| Receive FIFO Depth | 64 bytes per UART |
| Register Set | 16C550-compatible |
| Host Bus Interface | Intel or Motorola selectable |
| Transfer Support | DMA and interrupt |
| Low-Power Operation | Programmable sleep mode with automatic wake-up |
डिज़ाइन नोट्स
Use the manufacturer datasheet's pin-description table and package drawing before assigning tracks. Keep the UART clock and host-bus signals away from noisy switching nodes, provide a continuous ground reference beneath the device, and place required bypass capacitors close to their supply pins. The 64-LQFP footprint is compact, but lead spacing and fanout should be checked against the PCB fabrication capability rather than estimated from the 10 mm x 10 mm body size.
Treat the host clock, read and write strobes, interrupt, DMA request, and DMA acknowledge as a coordinated digital interface. Use short, topology-controlled routes, avoid unnecessary stubs, and confirm signal levels against the 1.62 V to 3.6 V core range. Although serial inputs are 5 V tolerant, tolerance does not eliminate timing, ringing, or logic-level budget issues. Validate the final layout with an eye diagram or equivalent measurements at the intended clock rate.
Do not assume that the 5 V-tolerant serial inputs permit 5 V core operation or remove the need for level translation elsewhere. Configure the Intel or Motorola host-bus selection correctly, establish the reset state before enabling host access, and program FIFO trigger levels only after each channel's operating mode is known. A mismatch between bus convention and firmware assumptions can produce intermittent reads even when the serial channels themselves are functioning normally.
Power the controller from a rail inside the specified 1.62 V to 3.6 V range and apply decoupling according to the manufacturer datasheet. Separate noisy digital activity from sensitive analog sections elsewhere on the board, and provide return paths for switching peripherals so their current does not flow through the UART ground region. Because the controller is a digital interface IC, thermal analysis should use actual supply current and board-level heat spreading rather than a power-semiconductor safe operating area calculation.
अनुपालन जानकारी
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was identified for this exact ordering code.
