W741L250
Description
The W741L250 is a high-performance 4-bit microcontroller (µC) that provides an LCD driver.
Key Features
- Operating voltage: 1.2V to 1.8V (LCD drive voltage: 3.0V or 4.5V)
- Operating frequency up to 1 MHz
- Crystal/RC oscillation circuit selectable by code option for system clock
- Only low-frequency clock (32.768 KHz) for crystal mode
- 2048 × 16 bit program ROM (including 2K × 4 bit look-up table) - 128 × 4 bit data RAM (including 16 working registers) - 24 × 4 LCD data RAM
- Power-down mode - Hold function: no operation (except for oscillator) - Stop function: no operation (including oscillator)
- Five types of interrupts - Three internal interrupts (Divider 0, Timer 0, Timer
- Two external interrupts (Port RC and INT pin)
- MFP output pin - Output is software selectable as modulating or nonmodulating frequency - Works as frequency output specified by Timer 1
- Built-in 14-bit clock frequency divider circuit
