UPD178023

DATA SHEET µPD178023,178024 8-BIT SINGLE-CHIP MICROCONTROLLER MOS INTEGRATED CIRCUIT DESCRIPTION The µPD178023, 178024 are 8-bit single-chip CMOS microcontrollers containing hardware for digital tuning systems. These microcontrollers employ a 78K/0 series architecture CPU and allow easy access to internal memories at high speed and easy control of peripheral hardware units. The high-speed 78K/0 series instructions are ideal for system control. As peripheral hardware, a prescaler, PLL frequency synthesizer, and frequency counter for digital tuning systems are provided, as well as many I/O ports, timers, A/D converter, serial interface, and a power-ON clear circuit. In addition, three serial interfaces, I2C bus (IIC0), three-wire (SIO3), and UART are provided. Moreover, a flash memory model, the µPD178F124, that operates in the same supply voltage range as the mask ROM models, and various development tools are also under development. For the detailed functional description, refer to the following User’s Manuals: µPD178024, 178124 Subseries User’s Manual : U13915E 78K/0 Series User’s Manual - Instruction : U12326E FEATURES High-capacity ROM and RAM Item Part Number Program Memory (ROM) Data Memory Internal high-speed RAM 24K bytes 32K bytes 1024 bytes µPD178023 µPD178024 Instruction cycle: fX = 4.5 MHz) 0.45/0.89/1.78/3.56/7.11 µs (with crystal resonator of Hardware for PLL frequency synthesizer Vectored interrupt sources: Supply voltage phase comparator, cha...