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The PI7C9X1170 is a I2C-bus/SPI to a single-channel high performance UART bridge controller. It offers data rates up to 33 Mbps and guarantees low operating and sleeping current. The PI7C9X1170 also has up to 8 additional programmable general purpose I/O [GPIO] pins. The device comes in very small TSSOP24 and TSSOP16 packages, which makes it ideally suitable for cost efficient, handheld, battery operated applications. These UARTs provide a bridge for protocol conversion from I2C -bus or SPI to and RS-232/RS-485 and are fully bidirectional.
The PI7C9X1170 supports SPI clock speeds up to 33 Mbps and IrDA SIR up to 1.152 Mbit/s.
PI7C9X1170’s internal register set is backward-compatible with the widely used and widely popular 16C450 UART. The PI7C9X1170 also provides additional advanced features such as auto hardware and software flow control, automatic RS-485 support, support for fractional baud rates and software reset. This allows the software to reset the UART at any moment, independent of the hardware reset signalThis allows the software to reset the UART at any moment, independent of the hardware reset signal.
Single channel full-duplex UART
Support I2C-bus or SPI interface
64 bytes FIFO (transmitter and receiver)
Fully compatible with industrial standard 16C450 and equivalent
Baud Rates up to 16Mbit/s in 4X sampling clock rate
Programmable character formatting
- 5-bit, 6-bit, 7-bit or 8-bit character - Even, odd, or no parity - 1, 1.5, or 2 stop bits
Programmable Receive and Transmit FIFO trigger levels
Special character detection
Internal Loopback mode
Line break generation and detection
Support hardware flow control using RTS/CTS
Support software flow control with programmable Xon/Xoff characters
Programmable single or double Xon/Xoff characters
Automatic RS-485 slave address detection
RS-485 driver direction control via RTS signal
RS-485 driver direction control inversion
Built-in IrDA encoder and decoder interface
Supports IrDA SIR with speeds up to 115.2 kbit/s ( optional 1.152Mbps)
Up to eight user programmable GPIO pins
Low standby current at 3.3 V
Wide operation voltage (1.8V, 2.5V or 3.3V)
Industrial and commercial temperature ranges
Available in QFN24, TSSOP24 and TSSOP16 Packages
Compliant with I2C-bus fast speed
Support slave mode only
Crystal oscillator (up to 24MHz) or external clock (up to 64MHz) input
Environmental Compliance Legend: LFF: Pb-Free Finish and RoHS 5/6 TLFP: Totally Pb-Free Product and RoHS 6/6 LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free GREEN: Halogen-free and RoHS compliant RoHS: RoHS compliant but NOT halogen-free