MB8867 Datasheet | Fujitsu Semiconductor Limited

FUJITSU MB 8867 MB 8867E October 1982 Edition 2.0 TWO-PHASE MICROPROCESSOR CLOCK The Fujitsu MB 8867 is an advanced Microprocessor Clock Generator/Driver LSI manufactured with Fujitsu's bipolar TTL process. The circuit generates non-overlapping two-phase clock signals for the Fujitsu MB L 6800 microprocessor unit or similiar single +5 volt MPU's. Additionally, two- phase TTL clock signals synchronized with the MPU clock are provided, as well as an MPU data strobe, reset/clock controls for the memory interrupt, and an automatic power- up reset. With the MB 8867, the entire MPU timing - system can be designed with one chip and a minimum of external ponents. A built- in oscillator permits external timing control by a - crystal; or RC network timing can .be utilised for less critical applications. In th~ former; the internal frequency divider is rate selectable, so that the output frequency is either 1/4 or 1/16 of the source frequency. Driver circuits are included on the MB 8867 which eliminates the need for external buffer gates and reduces system package count. Output drivers are short - circuit protected. - Single chip two- phase clock generator with on-chip drivers - Short- circuit protected outputs - plete MPU system timing network including dynamic memory refresh - Single +5V power supply - Low power consumption: 450 m W typo - Reliable TTL process - Two- phase TTL clock signals - Data strobe for memory control synchronization - Automatic power-up and manual reset - Clock controls for memory interrupt - Crystal or RC network frequency source - Selectable source frequency options - Works with high speed microprocessors - Standard 24 pin package - Minimum external ponents...