Timing Controller 40-Pin CDIP

The Am9513A System Timing Controller is an LSI circuit designed to service many types of counting, sequencing and timing applications. It provides the capability for programmable frequency synthesis, high resolution programmable duty cycle waveforms, retriggerable digital one-shots, time-of-day clocking, coincidence alarms, complex pulse generation, high resolution baud rate generation, frequency shift keying, stop-watching timing, event count accumulation, waveform analysis, etc. A variety of programmable operating modes and control features allows the Am9513A to be personalized for particular applications as well as dynamically reconfigured under program control.The STC includes five general-purpose 16-bit counters. A variety of internal frequency sources and external pins may be selected as inputs for individual counters with software selectable active-high or active-low input polarity. Both hardware and software gating of each counter is available. Three-state outputs for each counter provide pulses or levels and can be active-high or active-low. The counters can be programmed to count up or down in either binary or BCD. The host processor may read an accumulated count at any time without disturbing the counting process. Any of the counters may be internally concatenated to form any effective counter length up to 80 bits.

• Five independent 16-bit counters
• High speed counting rates
• Up/down and binary/BCD counting
• Internal oscillator frequency source
• Tapped frequency scaler
• Programmable frequency output
• 8 bit or 16-bit bus interface
• Time-of-day option
• Alarm comparators on counters 1 and 2
• Complex duty cycle outputs
• One-shot or continuous outputs
• Programmable count/gate source selection
• Programmable input and output polarities
• Programmable gating functions
• Retriggering capability
• +5 volt power supply
• Standard 40-pin package
• SMD/DESC qualified