Product Introduction of I/O Expander
I/O Expander can easily expand the functions such as GPIOs, Keypads, LED controls and timers to the exsiting systems.

I/O Expander Example

I/O Expander
TC35893XBG, TC35894XBG, TC35894FG, TC35895WBG, TC35896WBG
Features
- Low-power operation
- I2C interface; Max. 8×12 key matrix; PWM timer; general-purpose I/O pins (GPIO)
- Up to 24 general-purpose I/O pins
General Specifications
| Part Number | TC35893XBG | TC35894XBG | TC35894FG | TC35895WBG | TC35896WBG |
|---|---|---|---|---|---|
| Summary | (PDF:154KB) |
(PDF:138KB) |
(PDF:196KB) |
(PDF:151KB) |
|
| Features | Up to 20 GPIO pins; on-chip RC oscillation | Up to 24 GPIO pins; on-chip RC oscillation | Up to 24 GPIO pins; on-chip RC oscillation | Up to 20 GPIO pins; on-chip RC oscillation | Up to 20 GPIO pins; on-chip RC oscillation; ESD protection |
| Power Suppy | 1.62-3.6 V | 1.62-3.6 V | 1.62-3.6 V | 1.62-3.6 V | 1.62-3.6 V |
| Package | BGA 3.0mm × 3.0mm (25 pins) |
BGA 3.5mm × 3.5mm (36 pins) |
QFP 10.0mm×10.0mm (44 pins) |
WLCSP 2.05mm×2.05mm (25 pins) |
WLCSP 2.15 mm x 2.15 mm (25 pins) |
| Package Dimensions | ![]() |
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| Status | Mass Production | Mass Production | Engineering samples available; Production scheduled to begin in Q2 2012 |
Mass Production | ES available in Q1 2012; Production scheduled to begin in Q3 2012 |









