uPD789842

www.DataSheet4U.com PRELIMINARY PRODUCT INFORMATION µPD789841, 789842 8-BIT SINGLE-CHIP MICROCONTROLLERS MOS INTEGRATED CIRCUIT The µPD789841 and µPD789842 are µPD789842 subseries products of the 78K/0S series. These microcontrollers incorporate an inverter control timer being suitable for controlling general-purpose inverters. The µPD78F9842, a product with on-chip flash memory which can operate on the same supply voltage as for masked ROM products and various development tools are also under development. Detailed descriptions of their functions, etc., are given in the following user's manuals. Be sure to read them for design purposes. : µPD789842 Subseries User's Manual 78K/0S Series User's Manual, Instruction : To be prepared U11047E FEATURES On-chip ROM and RAM Item Product name Program memory (ROM) 8K bytes 16K bytes Data memory (Internal high-speed RAM) 256 bytes Package 44-pin plastic QFP (10 × 10 mm) µPD789841 µPD789842 Minimum instruction execution time can be switched between high speed (0.24 µs) and low speed (0.96 µs) (when the system clock operates at 8.38 MHz). I/O port: 30 Timer: 6 channels 10-bit inverter control timer : 1 channel 8-bit timer/event counter 8-bit timer counter Watch timer Watchdog timer : 2 channels : 1 channel : 1 channel : 1 channel 8-bit resolution A/D converter: 8 channels Serial interface (UART00): 1 channel Multiplier: 10 bits × 10 bits = 20 bits SWAP: The contents of the high-order four bits of an 8-bit r...