Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 149

• Manufacturer Part Number: Z0847006PSG
• Description: IC 6MHZ Z80 NMOS DART 40-DIP
• Manufacturer: Zilog
• Series: Z80r

Specifications of Z0847006PSG

• Processor Type: Z80
• Features: Dual Channel Asynchronous Receiver/Transmitter (DART)
• Speed: 6MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Mounting Style: Through Hole
• Cpu Speed: 6MHz
• Digital Ic Case Style: DIP
• No. Of Pins: 40
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 847006
• Rohs Compliant: Yes
• Clock Frequency: 6MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

<   % 2 7 2 G T K R J G T C N U
7 U G T / C P W C N
  
Figure 49c depicts a one-of-eight TTL decoder which provides chip enable
signals for eight different peripheral devices. Address bits A0 and A1 are
often used directly by peripherals such as the Z80 SIO, PIO, and CTC, and
so are not decoded here. Additional decoders can be added when more
peripheral devices are present.
IORQ and M1 are internally gated with CE in Z80 peripheral devices and
need not be terms in CE. However, gating chip-enable signals with these
control lines do no harm and may produce less-ambiguous logic sequences
for circuit-level debugging, as seen in Figure 49c.
UM008101-0601
Direct Memory Access