The EF6840 is a programmable subsystem component of the 6800 family designed to provide variable system time intevals. The EF6840 has three 16-bit binary counters, three corresponding control registers and a status register. These counters are under software control and may be used to cause system interrupts and / or generate output signals.
1. Operates from a single 5 V power supply 2. Single system clock required ( Enable ) 3. Fully TTL compatible 4. Programmable interrupt (IRQ) output to MPU 5. Readable down counter indicates conunts to go to time-out 6. Three maskable outputs
Other data sheets within the file : EF6840, EF6840C, EF6840E, EF6840J, EF6840P, EF68A40P