Z85C3008VSG Zilog, Z85C3008VSG Datasheet - Page 153

• Manufacturer Part Number: Z85C3008VSG
• Description: IC 8MHZ Z8500 CMOS SCC 44-PLCC
• Manufacturer: Zilog
• Series: SCCr

Specifications of Z85C3008VSG

• Processor Type: Z80
• Features: Error Detection and Multiprotocol Support
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 44-LCC (J-Lead)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Cpu Speed: 8MHz
• Digital Ic Case Style: LCC
• No. Of Pins: 44
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 85
• Rohs Compliant: Yes
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3932; Z85C3008VSG

Application Note
Interfacing Z80
During RETI cycles, the IEO line from the Z8500 peripherals
does not change state as in the Z80 peripherals. As long as
the peripherals are at the top of the daisy chain, propagation
delays are minimized.
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EXTERNAL INTERFACE LOGIC (Continued)
Figure 11. Z80H to Z8500/Z8500A Peripheral Interrupt Acknowledge Interface Logic
®
CPUs to the Z8500 Peripheral Family
The logic necessary to create the control signals for both
Z80 and Z8500 peripherals is shown in Figure 9. This logic
delays the generation of /IORQ to the Z80 peripherals by
the same amount of time necessary to generate /READ for
the Z8500 peripherals. Timing for this logic during an
Interrupt Acknowledge cycle is depicted in Figure 10.
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