PI7C9X760ACLE - I2C/SPI to UART Bridge Controller | Diodes Inc
MPN: PI7C9X760ACLE ✓ פעילPI7C9X760ACLE סקירה
An I2C/SPI-to-UART bridge is a type of protocol converter, a subcategory of interface controller IC within the broader family of interface ICs and data-conversion semiconductors. Its role in a system is to absorb host-side bus traffic, buffer it in FIFOs, and present the data to an external serial device on well-defined pins. Because the bridge absorbs protocol and buffering duties, the host processor spends fewer cycles on framing, and several serial ports can be added to a device that has already exhausted its internal UART resources.
Key features of the PI7C9X760ACLE include 64-byte TX and RX FIFOs, support for both I2C-bus and SPI host interfaces, and a parallel UART port with modem control signals. The buffered host-to-UART and UART-to-host paths let the bridge absorb burst traffic from a fast host bus while a slow peripheral continues to shift data at the line rate, which prevents overrun on either side. The 24-pin TSSOP package is a low-profile surface-mount format compatible with automated pick-and-place and standard reflow assembly.
Internally, the device separates the synchronous host interface from the asynchronous UART datapath with dedicated transmit and receive FIFOs. This buffering is what allows the host-side clock and the UART baud clock to be unrelated, so a 1 MHz SPI host can feed a 9600 baud modem line without loss of characters. Framing, parity and flow-control handling are performed inside the controller, so application firmware only needs to move bytes rather than emulate a UART state machine.
Typical uses include industrial serial port expansion, USB-to-serial adapters, GPIO expander and sensor-hub modules, printer and POS terminal interfaces, and general serial bridging in embedded control boards. In such designs the bridge converts an I2C or SPI connection from the main MCU into a legacy DB9 or RJ45 serial port for a peripheral module.
When laying out the board, keep the UART side traces short and away from noisy switching nodes, and confirm that the serial line driver or transceiver, not the bridge itself, handles ESD and level shifting to RS-232 or RS-485 levels. The host bus pull-ups and the FIFO behaviour of the target firmware should be checked together because a host that polls faster than the line rate relies on the internal buffering to avoid overrun.
This page consolidates the device's interface capabilities, package and ordering details, same-family alternatives and practical layout guidance into a single engineering reference that goes beyond the brief listing information found in distributor catalogs.
חלופות תחליף ישיר עבור PI7C9X760ACLE — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
PI7C9X760ACLEX
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PI7C9X760AC
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PI7C9X760BCL
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PI7C9X760BC
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PI7C9X760BLE
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PI7C9X760ACLE דירוגים מרביים ומאפיינים חשמליים
| Product Type | I2C-bus/SPI to UART bridge controller |
| Manufacturer | Diodes Incorporated |
| Host Interfaces | I2C-bus, SPI |
| UART Interface | Asynchronous UART with modem control signals |
| Transmit FIFO | 64 bytes |
| Receive FIFO | 64 bytes |
| מארז | TSSOP-24 |
| Packaging | Tube, 62 pieces |
| מספר פינים | 24 pins |
| סוג הרכבה | Surface Mount |
| Datasheet Page Count | 53 pages (as indexed on the distributor-hosted datasheet listing) |
מדריך תצורת פינים של PI7C9X760ACLE tssop-24
תצורת פינים עבור PI7C9X760ACLE (מארזת tssop-24). רכיב הספק זה כולל מסופי שער, ניקוז ומקור. במארזים לא מקוטבים, יש לעיין בגיליון הנתונים של היצרן לכיוון מדויק של פין 1 ולפרטי טביעת רגל. יישומים נפוצים כוללים תכנון ספקי כוח, הנעת מנועים והחלפת עומסים.
אין נתוני פריסת פינים מפורטים עבור PI7C9X760ACLE.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
PI7C9X760ACLE מתאים עבור 6 יישוםs: Industrial Serial Port Expansion, USB-to-Serial Adapter Electronics, Sensor Hub and Module Serial Interfaces, POS Terminal and Printer Interfaces, Instrumentation and Test Equipment Backplanes, IoT Gateway and Modem Connectivity.
Industrial Serial Port Expansion
The PI7C9X760ACLE lets a control board add an asynchronous serial port to a microcontroller that has already used up its hardware UART blocks, because the host processor reaches the bridge over I2C or SPI rather than a dedicated UART peripheral. With 64-byte transmit and receive FIFOs, a fast host can burst several frames into the buffer while a slow peripheral modem or drive continues shifting characters at the configured baud rate. The result is that host firmware spends its cycles on data preparation rather than on bit-banging and framing, which matters on the 8-bit and 32-bit industrial controllers typically used in machine control cabinets.
מומלץ
USB-to-Serial Adapter Electronics
In a USB-to-serial adapter the USB controller is a fast host while the downstream port must deliver standard RS-232 or RS-485 framing, and that mismatch of data rates is exactly what the PI7C9X760ACLE FIFOs absorb. The bridge accepts host traffic on I2C or SPI, buffers up to 64 bytes in each direction, and presents a clean UART stream to the line driver without loss at high enumeration and burst rates. Because the conversion is handled in dedicated silicon, the host controller spends no general-purpose cycles on UART bit timing, leaving headroom for enumeration and protocol handling.
מומלץ
Sensor Hub and Module Serial Interfaces
Environmental and instrumentation modules often expose configuration over a legacy serial port while the main board talks I2C to a sensor aggregator, and the PI7C9X760ACLE bridges that gap inside a compact 24-pin TSSOP footprint. The 64-byte FIFOs protect against the short, bursty I2C traffic typical of multi-sensor polling, so a slow attached module is not overrun while the aggregator is servicing several other buses. The device is equally suited to front panels and baseboards where a legacy DB9 or RJ45 serial port must be retained for service technicians alongside modern sensor connectivity.
מומלץ
POS Terminal and Printer Interfaces
Point-of-sale terminals typically combine a host processor that already drives display, USB and storage peripherals with a thermal printer or scale that speaks a simple serial protocol, and the PI7C9X760ACLE provides that port without consuming a scarce UART block. The 64-byte transmit FIFO is valuable in this environment because print jobs arrive as short bursts from the host and then leave the board as a steady character stream at the printer's baud rate. Placement in a 24-pin TSSOP keeps the design thin for compact peripherals, and the buffered path reduces the risk of dropped characters when the main processor is busy with transaction handling.
מומלץ
Instrumentation and Test Equipment Backplanes
Test and measurement front ends often need to present a standard serial console or an instrument bus to a host controller that communicates over a fast synchronous link, and the PI7C9X760ACLE provides that translation with well-defined buffering between the two clock domains. Because the FIFOs are independent in each direction, the instrument side can stream results continuously while the host side is occupied with capture and analysis. The 24-pin TSSOP footprint is convenient for backplane daughter boards where connector area is limited, and the device keeps protocol handling out of the FPGA or MCU fabric, freeing logic resources.
מומלץ
IoT Gateway and Modem Connectivity
IoT gateways frequently pair a wireless module, connected over SPI, with a cellular or legacy modem that still uses an asynchronous serial console, and the PI7C9X760ACLE bridges those two interfaces in a single 24-pin TSSOP. The 64-byte FIFOs smooth the burst pattern of radio traffic arriving from the host bus, which is essential because a modem operating at 115200 baud cannot accept data as fast as a modern SPI radio delivers it. Keeping the bridge in hardware removes bit-banged UART software from the gateway's real-time task, leaving processor time for network stack handling and over-the-air updates.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PI7C9X760ACLE — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PI7C9X760ACLEX | PI7C9X760AC | PI7C9X760BCL | PI7C9X760BC | PI7C9X760BLE |
|---|---|---|---|---|---|---|
| Package | TSSOP-24 | TSSOP-24 - same | TSSOP-24 - same | TSSOP-24 - same | TSSOP-24 - same | TSSOP-24 - same |
| Brand | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Product Type | I2C-bus/SPI to UART bridge controller | I2C-bus/SPI to UART bridge controller | I2C-bus/SPI to UART bridge controller | I2C-bus/SPI to UART bridge controller | I2C-bus/SPI to UART bridge controller | I2C-bus/SPI to UART bridge controller |
| Host Interfaces | I2C-bus, SPI | I2C-bus, SPI | I2C-bus, SPI | I2C-bus, SPI | I2C-bus, SPI | I2C-bus, SPI |
| TX / RX FIFO Depth | 64 bytes TX / 64 bytes RX | 64 bytes TX / 64 bytes RX | 64 bytes TX / 64 bytes RX | 64 bytes TX / 64 bytes RX | 64 bytes TX / 64 bytes RX | 64 bytes TX / 64 bytes RX |
מבדילים עיקריים
- Dual host-bus choice in one controller (לעומתPI7C9X760DZDEX)
- Bidirectional 64-byte buffering (לעומתPI7C9X760ACLEX)
- Hardware offload of UART framing (לעומתPI7C9X760BC)
הערות תכנון
Treat the host bus and the UART side as separate domains on the board. Route the I2C or SPI lines away from the UART data and modem control traces, keep the UART pair length-matched and short, and place any external level-shifter close to the connector. The bridge is a protocol converter only, so the RS-232 or RS-485 driver should sit at the connector edge, separated from the digital return path by a ground-keepout arrangement to limit common-mode coupling.
Check host polling behaviour against the FIFO depth rather than assuming the bridge will absorb any traffic pattern. With 64 bytes of TX and RX buffering, a host that bursts more than the attached peripheral drains can still overflow, and the resulting symptom is a truncated frame or a corrupted character rather than an obvious error flag. Instrument the flow-control and modem status lines during bring-up, and verify that the firmware respects the baud-rate relationship between host and serial side.
Follow the land pattern and paste and solder mask geometry defined in the manufacturer datasheet for the 24-pin TSSOP package, including the 0.65 mm lead pitch and the recommended via-in-pad or via-adjacent options if the layout is dense. Reflow using the lead-free profile published for the device, and check the moisture sensitivity level before allowing the parts to sit outside dry storage for more than one floor-time cycle after opening the tube.
מידע על תאימות
No compliance declarations are stated for this part in the product listings, so each field is recorded as unknown rather than assumed. Check the manufacturer product page and the material declaration documents for the RoHS, REACH and lead-free status of the exact ordering code before release to production.
