I2C-Interfaced Key-Switch Controller and LED
Driver/GPIOs with Integrated ESD Protection
PIN
TQFN
24
26
28
29
31
32
33
34
36
37
38
39
—
WLP
D1
C1
B1
A1
B2
A2
B3
A3
A4
C3
A5
B5
—
Pin Description (continued)
NAME
FUNCTION
INTI
VCC
AD0
I.C.
PORT0
PORT1
PORT2
PORT3
PORT4
PORT5
PORT6
PORT7
EP
Active-Low GPI Interrupt Output. INTI is open drain and requires a pullup resistor.
Positive Supply Voltage. Bypass VCC to GND with a 0.1FF or higher ceramic capacitor.
Address Input. AD0 selects up to four device slave addresses (Table 3).
Internally Connected. Connect to GND for normal operation.
GPIO Port. Open-drain I/O rated at +14V. PORT0 can be configured as a constant-
current output.
GPIO Port. Open-drain I/O rated at +14V. PORT1 can be configured as a constant-
current output.
GPIO Port. Open-drain I/O rated at +14V. PORT2 can be configured as a constant-
current output.
GPIO Port. Open-drain I/O rated at +14V. PORT3 can be configured as a constant-
current output.
GPIO Port. Open-drain I/O rated at +14V. PORT4 can be configured as a constant-
current output.
GPIO Port. Open-drain I/O rated at +14V. PORT5 can be configured as a constant-
current output.
GPIO Port. Open-drain I/O rated at +14V. PORT6 Can be configured as a constant-
current output, or a rotary switch input.
GPIO Port. Open-drain I/O rated at +14V. PORT7 can be configured as a constant-
current output, or a rotary switch input.
Exposed Pad (TQFN only). EP is internally connected to GND. Connect EP to a ground
plane to increase thermal performance.
_______________________________________________________________________________________ 7