| Controls up to 128 segments (48-pin packages) or 64 segments (32-pin package) |
| Expands GPIO count by up to 36 pins (48-pin packages) or 20 pins (32-pin package) |
| Ultra Low Power Mode w/ LCD (<1.7 μA typical) |
| General purpose RAM expands the memory available to host controller |
| Two general purpose 16-bit timers |
| 20 MHz Internal oscillator |
| 4-wire SPI Interface operates up to 2.5 Mbps with synchronous external clock or up to 1 Mbps with internal clock (CP2400/2) |
| 2-wire SMBus/I2C Interface operates up to 400 kHz with internal clock (CP2401/3) |
| 1.8–3.6 V operation with integrated LDO |
| Shutdown current (0.05 μA typical) |
