• Device Type: Z80 CTC (Counter/Timer Circuit)
• Technology: CMOS (Z84C30 series) / NMOS (Z8430 series)
• Function: Programmable Counter/Timer Peripheral for Z80 Microprocessor Systems
• Channels: 4 Independent Counter/Timer Channels
• Prescaler Options: 16 or 256 (selectable per channel)
• Counter Type: Readable down-counter with automatic reload at zero count
• Clock Frequency Ratings:
  • Z84C3006: DC to 6.17 MHz
  • Z84C3008: DC to 8 MHz
  • Z84C3010: DC to 10 MHz
• Supply Voltage: 5 V (typically 4.5 V to 5.5 V)
• Interrupt Support: Fully vectored, prioritized Z80 daisy-chain interrupt structure
• Interrupt Controller Capability: Can function as a dedicated interrupt controller
• Triggering: Selectable positive or negative edge trigger
• Outputs: Three channels provide Zero Count/Timeout outputs
• Interface: Direct interface to Z80 CPU and Z80 SIO devices
• Package Options:
  • DIP-28
  • PLCC-44
  • QFP-44 (depending on variant)
• Operating Temperature Range:
  • Commercial: 0°C to +70°C
  • Industrial variants: -40°C to +100°C

Applications

• Z80-based computers
• Industrial controllers
• Communication equipment
• Baud-rate generation
• Event counting
• Frequency measurement
• Real-time clock and timing functions