The SGM4591 is a general-purpose parallel input and output (I/O) expander device, which consists of two lanes and 8 bits parallel I/O expansion. The device communicates with processor through two-line bidirectional I2C bus (or SMBus), supporting I2C standard mode (100kHz) and I2C fast mode (400kHz) clock frequency. The SGM4591 provides a simple solution for the devices that need additional I/Os, such as LEDs, buttons, sensors, etc.
The SGM4591 can select device address by the A0 and A1 pins. The SGM4591 features an interrupt generated on the nINT whenever the state of input port changes. An output anomaly may also be indicated by the nINT pin when the corresponding Output Anomaly Indication port register is set to 1. The SGM4591 can cycle the power supply and cause a power-on reset to reset itself to the default state. In addition, the device can use a hardware nRESET pin to reset itself to the default state.
The SGM4591 is available in Green TSSOP-24 and TQFN-4×4-24FL packages and supports -40℃ to +125℃ temperature range.
- 1.65V to 5.5V Input Voltage Range
- Parallel I2C I/O Expander
- 5V Tolerant Input and Output Ports
- Active Low Reset Input
- Active Low Interrupt Output
- Support 400kHz I2C Fast Mode
- Internal Power-on Reset
- No Glitch on Power-up
- Polarity Inversion Register
- Compatible with Most Processors
- Select Device Address by Two Pins (up to Four Devices)
- Latched Outputs Drive LEDs Directly
- Latch-up Performance (>100mA) to Meet JESD 78 Class II Standard
- -40℃ to +125℃ Operating Temperature Range
- Available in Green TSSOP-24 and TQFN-4×4-24FL Packages
I2C GPIO Expansion
Industrial, Factory, Building, Test and Measurement
