Refer to the PDF data sheet for device specific package drawings
The TCAL6416R provides general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device operates with a power supply voltage ranging from 1.08V to 3.6V on the I2C bus side (VCCI), and a power supply voltage ranging from 1.08V to 3.6V on the P-port side (VCCP).
The device supports 100kHz (standard-mode), 400kHz (fast-mode), and 1MHz (fast-mode-plus) I2C clock frequencies. I/O expanders, such as the TCAL6416R, provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and so on.
The TCAL6416R has Agile I/O ports which include additional features designed to enhance the I/O performance in terms of speed, power consumption and EMI. The additional features are: programmable output drive strength, programmable pull-up and pull-down resistors, latchable inputs, maskable interrupt, interrupt status register, and programmable open-drain or push-pull outputs.
The RESET pin only resets the I2C state machine when stuck to regain access to the I2C. I/O pins and sticky registers retain the last configured state while the I2C is being re-initialized.
PIN | TYPE(1) | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
INT | B3 | O | Interrupt output. Connect to VCCI or VCCP through a pull-up resistor |
VCCI | A2 | — | Supply voltage of I2C bus. Connect directly to the supply voltage of the external I2C controller |
RESET | A1 | I | Active-low reset input. Connect to VCCI through a pull-up resistor, if no active connection is used |
P00 | B1 | I/O | P-port input/output (push-pull design structure). At power on, P00 is configured as an input |
P01 | C3 | I/O | P-port input/output (push-pull design structure). At power on, P01 is configured as an input |
P02 | C1 | I/O | P-port input/output (push-pull design structure). At power on, P02 is configured as an input |
P03 | C2 | I/O | P-port input/output (push-pull design structure). At power on, P03 is configured as an input |
P04 | D1 | I/O | P-port input/output (push-pull design structure). At power on, P04 is configured as an input |
P05 | E1 | I/O | P-port input/output (push-pull design structure). At power on, P05 is configured as an input |
P06 | E2 | I/O | P-port input/output (push-pull design structure). At power on, P06 is configured as an input |
P07 | D2 | I/O | P-port input/output (push-pull design structure). At power on, P07 is configured as an input |
GND | E3 | — | Ground |
P10 | D3 | I/O | P-port input/output (push-pull design structure). At power on, P10 is configured as an input |
P11 | E4 | I/O | P-port input/output (push-pull design structure). At power on, P11 is configured as an input |
P12 | E5 | I/O | P-port input/output (push-pull design structure). At power on, P12 is configured as an input |
P13 | D5 | I/O | P-port input/output (push-pull design structure). At power on, P13 is configured as an input |
P14 | D4 | I/O | P-port input/output (push-pull design structure). At power on, P14 is configured as an input |
P15 | C5 | I/O | P-port input/output (push-pull design structure). At power on, P15 is configured as an input |
P16 | C4 | I/O | P-port input/output (push-pull design structure). At power on, P16 is configured as an input |
P17 | B5 | I/O | P-port input/output (push-pull design structure). At power on, P17 is configured as an input |
ADDR | A5 | I | Address input. Connect directly to VCCP or ground |
SCL | A4 | I | Serial clock bus. Connect to VCCI through a pull-up resistor |
SDA | B4 | I/O | Serial data bus. Connect to VCCI through a pull-up resistor |
VCCP | A3 | — | Supply voltage of TCAL6416R for P-ports |