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The HT16D33A and HT16D33B are high accuracy constant current and memory mapping LED display controller/drivers. The maximum display capacity is 256 patterns composed of 16 rows and 16 commons. Using software controlled PWM circuitry, the devices can generate a 256-step Gray Scale (PWM data) and 256 LED illumination levels.
The devices provide constant current output control using software-controlled for each row output terminal. A serial interface is provided to allow the devices to receive instructions for its command mode and data mode. Only three lines are required for device interfacing to a host controller. The display capacity can be easily extended by cascading the devices thus expanding its application possibilities. The devices are compatible with most microcontrollers offering easy interfacing via their two serial interfaces, an I2C interface (HT16D33B) or an SPI 3-wire serial interface (HT16D33A).
NOTE
The product image is for showing the product appearance, the pin count shown may not match the product pin count.