ECG6809, NMOS 1MHz 8-Bit Microprocessing Unit (MPU/CPU) ~ 40 Pin DIP (NTE6809)

ECG6809,NMOS1MHz 8-Bit Microprocessing Unit (MPU/CPU) with Internal Oscillator and Clock Generator ~ 40 Pin DIP (NTE6809)

ARCHITETURAL FEATURES:

• Two 16Bit Index Registers
• Two 16Bit Indexable Stack Pointers
• Two 8Bit Accumulators can be Concatenated to Form One 16Bit Accumulator
• Direct Page Register Allows Direct Addressing Throughout Memory

HARDWARE FEATURES:

• OnChip Oscillator (Crystal Frequency = 4 x E),
• DMA/BREQ Allows DMA Operation on Memory Refresh
• Fast Interrupt Request Input Stacks Only Condition Code Register and Program Counter
• MRDY Input Extends Data Across Times for Use with Slow Memory
• Interrupt Acknowledge Output Allows Vectoring by Devices
• Sync Acknowledge Output Allows for Synchronization to External Event
• Single BusCycle RESET
• Single 5V Supply Operation
• NMI Inhibited After RESET Until After First Load Stack Pointer
• Early Address Valid Allows Use with Slower Memories
• Early Write Data for Dynamic Memories
• 40 Pin DIP Package
• Replaces NTE6809