NTE3882

NTE3882 Integrated Circuit NMOS, Counter Timer Control (CTC) Description: The NTE3882 Counter Timer Circuit (CTC) is a programmable, four channel device in a 28–Lead DIP type package that provides counting and timing functions for the NTE3880. The NTE3880 configures the NTE3882’s four independent channels to operate under various modes and conditions as required. The internal structure of the NTE3882 consists of an NTE3880 bus interface, internal control logic, four counter channels, and interrupt control logic. Each channel has an interrupt vector for automatic interrupt vectoring, and interrupt priority is determined by channel number with channel ∅ having the highest priority. The channel logic is composed of 2 registers, 2 counters and control logic. The registers include and 8–bit time constant register and an 8–bit channel control register. The counters include as 8–bit readable down counter and an 8–bit prescaler. The prescaler may be programmed to divide the system clock by either 16 or 256. Structure: D N–Channel Silicon Gate Depletion Load Technology D Single 5V Supply D Single Phase 5V Clock D Four Independent Programmable 8–Bit Counter/16–Bit Timer Channels Features: D Each Channel may be Selected to Operate in Either a Counter Mode or Timer Mode D Programmable Interrupts on Counter or Timer States D A Time Constant Register Automatically Reloads, the Down Counter at Zero and the Cycle is Repeated D Readable Down Counter Indicates Number of Counts–to–Go until Zero...