A product Line of Pb Diodes Incorporated Lead-free Green PI7C9X760 I2C-bus/SPI to UART Bridge Controller w/ 64 bytes of TX/RX FIFOs Features Crystal oscillator (up to 24MHz) or external clock (up to Single channel full-duplex UART 64MHz) input 2 Support I C-bus or SPI interface SPI Interface 64 bytes FIFO (transmitter and receiver) Support 33 Mbit/s maximum SPI clock speed Fully compatible with industrial standard 16C450 and Support SPI mode 0 (slave mode only) equivalent Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Baud Rates up to 16Mbit/s in 4X sampling clock rate Halogen and Antimony Free. Green Device (Note 3) Programmable character formatting 5-bit, 6-bit, 7-bit or 8-bit character Description Even, odd, or no parity 1, 1.5, or 2 stop bits 2 e PTh I7C9X760 is a I C-bus/SPI to a single-channel high per- Programmable Receive and Transmit FIFO trigger levels formance UART bridge controller. It offers data rates up to Special character detection 33 M bp s a nd g u a r a nt e e s low op er at i ng a nd s le e pi ng c u r rent . Internal Loopback mode e PTh I7C9X760 also has up to 8 additional programmable gen - eral purpose I/O GPIO pins. The device comes in very small Line break generation and detection TSSOP24 packages, which makes it ideally suitable for cost ef- Flow Control cfi ient, handheld, battery operated applications. These UART Support hardware flow control using RTS/CTS bridges provide protocol conversion from I2C -bus or SPI to RS- Support software flow control with programmable Xon/Xoff 232/RS-485/RS-422 and are fully bidirectional. characters e PTh I7C9X760 supports SPI clock speeds up to 33 Mbps and Programmable single or double Xon/Xoff characters IrDA SIR up to 1.152 Mbit/s. Interface Control PI7C9X760s internal register set is backward-compatible with the Automatic RS-485 slave address detection widely used and widely popular 16C450 UART. The PI7C9X760 RS-485 driver direction control via RTS signal also provides additional advanced features such as auto hardware RS-485 driver direction control inversion and software flow control, automatic RS-485 support, support for Built-in IrDA encoder and decoder interface fractional baud rates and software reset. This allows the software to reset the UART at any moment, independent of the hardware Supports IrDA SIR with speeds up to 115.2 kbit/s ( optional 1.152Mbps) reset signal. This allows the software to reset the UART at any moment, independent of the hardware reset signal. Up to eight user programmable GPIO pins Software reset Application Others Industrial computing Low standby current at 3.3 V Automation Wide operation voltage (1.8V, 2.5V or 3.3V) Factory process control Industrial and commercial temperature ranges Mobile computing Available in QFN24, TSSOP24 and TSSOP16 Packages 2 Embedded applications I C Interface 2 Battery operated devices Compliant with I C-bus fast speed Networking Support slave mode only Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See A product Line of Diodes Incorporated PI7C9X760 Block Diagram 2 2 I C-bus interface I C-bus interface VDD VDD TX TX RX RX 16C450 16C450 RTS RTS COMPATIBLE RESET RESET COMPATIBLE CTS CTS REGISTER REGISTER SCL SCL SETS SETS SDL SDL I2C-bus I2C-bus A0 A0 A1 A1 IRQ IRQ 4 1K(3.3 v) GPIO 3:0 1K(3.3 v) 1.5K(2.5 v) 1.5K(2.5 v) GPIO4/DSR GPIO VDD REGISTER GPIO5/DTR VDD GPIO6/CD VDD VDD GPIO7/RI I2C/SPI I2C/SPI VSS 002aab971 VSS 002aab014 XTAL1 XTAL2 XTAL1 XTAL2 SPI interface SPI interface V DD VDD TX TX RX 16C450 RX 16C450 RTS RESET COMPATIBLE RTS RESET COMPATIBLE CTS REGISTER CTS REGISTER SCLK SCLK SETS SETS CS CS SPI SPI SO SO SI SI IRQ IRQ 4 1K(3.3 v) 1K(3.3 v) GPIO 3:0 1.5K(2.5 v) 1.5K(2.5 v) GPIO4/DSR GPIO VDD VDD REGISTER GPIO5/DTR GPIO6/CD I2C/SPI GPIO7/RI I2C/SPI 002aab972 VSS XTAL1 XTAL2 VSS 002aab396 XTAL1 XTAL2 www.diodes.com April 2019 PI7C9X760 2 Diodes Incorporated Document Number DS40305 Rev 6-2