The PD780031AY, 780032AY, 780033AY, and 780034AY are members of the PD780034AY Subseries of the 78K/0 Series. This is a PD780034A Subseries product with an added multimaster-supporting I2C bus interface, and is suitable for AV equipment applications. A flash memory version, the PD78F0034AY, that can operate in the same power supply voltage range as the mask ROM version, and various development tools, are available. Detailed function descriptions are provided in the following user's manuals. Be sure to read them before designing.