PI7C9X760BZDE - 33Mbps I2C/SPI to UART Bridge | Diodes
MPN: PI7C9X760BZDE ✓ ActivePI7C9X760BZDE Overview
An I2C/SPI-to-UART bridge is an interface controller that translates data between a synchronous serial bus and an asynchronous UART channel. Within the broader semiconductor hierarchy, it belongs to the bridge-controller and interface-controller family, where it connects a microcontroller or processor to an external UART endpoint. This protocol conversion allows a host with I2C or SPI connectivity to communicate with UART peripherals without implementing each side of the serial interface in host firmware.
The PI7C9X760 family supports operating and sleeping current optimized for cost-efficient, handheld, and battery-operated equipment. Its maximum data rate of 33 Mbps supports high-speed serial links, while the 64-byte TX and RX FIFOs help decouple host-bus transactions from UART timing. Eight programmable GPIO pins add flexible auxiliary digital signals without requiring another small controller. The available supply-voltage options also allow the device to fit common 1.8 V, 2.5 V, and 3.3 V embedded power systems.
The PI7C9X760 uses an I2C-bus or SPI host interface on one side and a single UART channel on the other. This architecture is useful when a system already exposes a host-side serial bus but needs a conventional asynchronous serial port for a modem, sensor, display, or other peripheral. The FIFO depth improves handling of short bursts, although the host must still configure baud rate, framing, parity, flow control, and protocol-specific behavior through the device registers.
Typical uses include battery-powered data collection, compact industrial modules, serial-port adapters, handheld test equipment, and embedded accessories that require an I2C or SPI master interface alongside one UART channel. The 24-TQFN 4 mm by 4 mm package helps reduce board area in space-constrained designs. The exposed thermal pad assists heat transfer, but correct layout and exposed-pad soldering remain essential for reliable thermal and electrical performance.
Designers should follow the PI7C9X760 manufacturer datasheet for the complete pin description, recommended decoupling, register map, clock requirements, electrical limits, and exposed-pad layout. Confirm the target UART baud rate, host-bus voltage, GPIO use, and power budget before PCB release. The 33 Mbps maximum data rate should not be interpreted as an unrestricted system-throughput guarantee because host-bus overhead and UART framing affect effective payload throughput.
This product page consolidates the verified manufacturer and distributor facts for the PI7C9X760BZDE, including protocol capability, data rate, FIFO capacity, GPIO resources, supply options, package format, sourcing information, and design-oriented selection guidance. Use the linked manufacturer datasheet as the controlling document for implementation details and production releases.
Drop-in alternatives for PI7C9X760BZDE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesPI7C9X760BZDE Maximum Ratings & Electrical Characteristics
| Product Type | I2C/SPI to single-channel UART bridge controller |
| Maximum Data Rate | 33 Mbps |
| Host Interface | I2C and SPI |
| UART Channels | 1 channel |
| Transmit FIFO | 64 bytes |
| Receive FIFO | 64 bytes |
| Programmable GPIO | 8 pins |
| Low Voltage Supply Option | 1.8 V |
| Intermediate Voltage Supply Option | 2.5 V |
| Standard Voltage Supply Option | 3.3 V |
| Package | 24-TQFN (4 mm x 4 mm) |
| Pin Count | 24 pins |
| Mounting Type | Surface mount |
| Temperature Grade | Industrial |
PI7C9X760BZDE 24-tqfn (4 mm x 4 mm) Pin Configuration Guide
Pin configuration for PI7C9X760BZDE (24-tqfn (4 mm x 4 mm) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for PI7C9X760BZDE.
Refer to the datasheet for full pin configuration.
Typical Applications
PI7C9X760BZDE is suitable for 6 applications: Portable Serial Data Acquisition, Battery-Powered Handheld Devices, Industrial Sensor Gateway, UART-to-SPI Protocol Adapters, Point-of-Sale and Peripheral Controllers, Embedded Test and Measurement Instruments.
Portable Serial Data Acquisition
PI7C9X760BZDE fits portable acquisition equipment that already uses an I2C or SPI host bus but needs a UART link for a sensor, radio, or external instrument. The 33 Mbps maximum UART rate supports high-speed serial operation, while the 64-byte transmit and receive FIFOs help accommodate bursty host traffic. Its eight programmable GPIOs can provide peripheral control or status signals. The 1.8 V supply option supports integration with low-voltage battery-powered platforms, although the system must remain within the device's specified current and temperature limits.
Battery-Powered Handheld Devices
PI7C9X760BZDE is appropriate for compact handheld equipment that requires one UART endpoint without dedicating a host UART peripheral. Low operating and sleeping-current characteristics support battery-oriented designs, and the 24-pin TQFN package measures only 4 mm by 4 mm. A system designer can connect the host through I2C or SPI, configure the bridge registers, and use its eight programmable GPIOs for auxiliary functions. Low-power behavior should still be validated against the required standby duration and traffic pattern.
Industrial Sensor Gateway
PI7C9X760BZDE can bridge a compact industrial sensor gateway to a UART modem or controller while the primary processor uses I2C or SPI for internal traffic. The 33 Mbps capability provides margin for high-speed serial devices, and the dual 64-byte FIFOs improve separation between host transactions and UART service timing. Its industrial temperature-grade identification suits equipment expected to operate beyond consumer-temperature conditions, subject to the exact datasheet limits and system thermal design.
UART-to-SPI Protocol Adapters
PI7C9X760BZDE enables a compact adapter design in which an I2C or SPI host controls a conventional UART peripheral. The host processor selects the bridge configuration, exchanges data through the host bus, and receives buffered UART data through the 64-byte RX FIFO. Eight programmable GPIO pins can support reset, direction, interrupt, or status functions. Designers should verify baud-rate tolerance, electrical-level compatibility, and the complete 24-pin assignment before releasing a PCB.
Point-of-Sale and Peripheral Controllers
PI7C9X760BZDE can add a UART channel to compact point-of-sale equipment, accessories, and peripheral controllers where the main system bus is I2C or SPI. The small 24-TQFN footprint helps preserve board area, while the FIFO buffers support burst traffic between the host and UART peripheral. The eight GPIOs may be assigned to peripheral-ready, fault, or control signals. The solution is most appropriate for one UART channel; designs needing several ports should use a higher-channel-count bridge instead.
Embedded Test and Measurement Instruments
PI7C9X760BZDE can provide a high-speed UART connection in compact embedded test instruments controlled by an I2C- or SPI-based processor. The 33 Mbps maximum rate is suitable for demanding serial instruments when the baud rate and protocol permit, while 64-byte TX and RX FIFOs improve handling of short command and response sequences. The bridge also supplies eight programmable GPIOs for trigger, status, or reset functions. Timing margins, grounding, and exposed-pad layout remain important in precision-oriented equipment.
Engineering reference data for PI7C9X760BZDE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Product Type | I2C/SPI to single-channel UART bridge controller |
| Host Interface | I2C and SPI |
| UART Channels | 1 channel |
| Maximum Data Rate | 33 Mbps |
| Transmit FIFO | 64 bytes |
| Receive FIFO | 64 bytes |
| Programmable GPIO | 8 pins |
| Supply Voltage Options | 1.8 V, 2.5 V, 3.3 V |
| Package | 24-TQFN (4 mm x 4 mm) |
| Brand | Diodes Incorporated |
Design Notes
Use the manufacturer datasheet's recommended pin assignments, power routing, decoupling, and 24-TQFN land pattern without modification. Place required input and output capacitors close to their associated pins, keep the exposed pad connected to the intended ground plane, and follow the datasheet's solder-mask and paste guidance. Because the exact pin names and layout values are not reproduced on this page, do not infer them from generic TQFN conventions.
Estimate the bridge's contribution to the system power budget from the selected supply voltage, operating current, UART activity, and sleep duration. The manufacturer identifies low operating and sleeping current as important characteristics, but the exact current limits and operating-mode transitions must be taken from the PI7C9X760 datasheet. Account separately for host-interface activity, UART loading, pull networks, and any external level-shifting circuitry.
Treat the UART and host serial links as potentially high-speed signals even when the logical protocol is simple. Use short, properly referenced routes, avoid unnecessary stubs, maintain a continuous ground reference, and apply the voltage, capacitance, and timing guidance specified by the manufacturer. The 33 Mbps figure is a maximum device data rate rather than a guarantee that every PCB layout or cable will preserve signal integrity at that rate.
Do not treat a UART-only or protocol-similar IC as a drop-in replacement without verifying the 24-pin footprint, exposed-pad connection, supply range, clock requirements, host-bus functions, UART signal mapping, register compatibility, and firmware expectations. Also avoid assuming that the eight GPIO pins are available for general use unless the selected operating mode and pin multiplexing leave them accessible.
Compliance Information
No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration was identified for the exact PI7C9X760BZDE ordering code. AEC-Q100 is not applicable because this is an industrial interface controller rather than an automotive-qualified product.
