PI7C9X1170CZDE

Controllers Overview

The PI7C9X1170CZDE is a single-channel full-duplex UART bridge controller manufactured by Diodes Incorporated. It converts I2C-bus or SPI protocols to RS-232/RS-485 serial data. The device features 64-byte transmitter and receiver FIFOs, supports baud rates up to 16 Mbit/s with 4x sampling, and operates at supply voltages of 1.8V, 2.5V, or 3.3V. It includes programmable character formatting, hardware/software flow control, and IrDA SIR support. The component is housed in a 24-pin QFN package.

Controllers Feature Summary

• Supports I2C-bus or SPI interface for host communication
• Includes 64-byte TX/RX FIFOs to reduce software overhead
• Backward compatible with the industrial standard 16C450 register set
• Features automatic RS-485 slave address detection and direction control

Controllers Applications

• Industrial computing systems
• Factory process control automation
• Mobile and embedded battery-operated devices
• Networking equipment interfaces

Controllers Procurement Notes

Verify the specific ordering suffix 'CZDE' against the manufacturer's current datasheet to confirm package type and temperature range. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the selected variant matches the required voltage and interface specifications for the target application design.

Controllers Selection Notes

Select this component when a compact UART bridge is needed for I2C or SPI to RS-232/RS-485 conversion. Consider the 24-pin QFN package for space-constrained designs. Verify that the host system supports the required SPI mode 0 or I2C fast speed. Check if the 16C450 compatibility meets existing software requirements.

Controllers Part Context

This part belongs to the PI7C9X1170 family of UART bridge controllers from Diodes Incorporated (formerly Pericom). The family offers various package options including TSSOP and QFN. The 'CZDE' suffix typically denotes the 24-pin QFN package variant within this product line, designed for cost-efficient handheld applications.

Controllers Replacement Considerations

Direct replacements may include other variants within the PI7C9X1170 family such as PI7C9X1170CLE or PI7C9X1170BZDE, depending on the required package and interface configuration. Verify pinout compatibility and register set equivalence before substitution.