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The PI7C9X762 is a I2C-bus/SPI to a dual-channel high performance UART bridge controller. It offers data rates up to 33 Mbps and guarantees low operating and sleeping current. The PI7C9X762 also has up to 8 additional programmable general purpose I/O [GPIO] pins. The device comes in very small TSSOP28 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 PI7C9X762 supports SPI clock speeds up to 33 Mbps and IrDA SIR up to 1.152 Mbit/s.
PI7C9X762’s internal register set is backward-compatible with the widely used and widely popular 16C450 UART. The PI7C9X762 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 signal.
Dual 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 temperature ranges -40 ˚C to 85 ˚C
Available in TSSOP28 and TQFN32 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
Product Change Notices (PCNs)
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.