LM8333
Description
The LM8333 Mobile I/O Companion offloads the burden of keyboard scanning from the host, while providing extremely low power consumption in both operational and standby modes. It supports keypad matrices up to 8 × 8 in size (plus another 8 specialfunction keys), for portable applications such as cellphones, PDAs, games, and other handheld applications.
Key Features
- 2 8 × 8 Standard Keys
- 8 Special Function Keys (SF Keys) Providing a Total of 72 Keys for the Maximum Keyboard Matrix
- ACCESS.Bus (I2C-compatible) Communication Interface to the Host
- Four General Purpose Host Programmable I/O Pins with Two Optional (Slow) External Interrupts
- 15-byte FIFO Buffer to Store Key Pressed and Key Released Events
- Error Control with Error Reports on (FIFO Overrun, Keypad Overrun, Invalid Command)
- Host Programmable PWM
- Host Programmable Active Time and Debounce Time
