Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 102

• 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

UM008101-0601
<   % 2 7 2 G T K R J G T C N U
7 U G T / C P W C N
Figure 33.
Interrupt Latches
Two primary latches are associated with the interrupt structure:
•
•
A.
B.
C.
Interrupt Pending (IP). Set whenever the DMA requests an interrupt
but has not yet acknowledged. It holds the INT line Low (Figure 34).
Interrupt Under Service (IUS). Set when the CPU acknowledges the
DMA interrupt (Figure 35). This accomplishes three things:
–
Prevents further interrupts by this DMA
Service Routine
Service Routine
MEMORY
Jump Table
Jump Table
Interrupt Service Routine
I Register
Program
Counter
Program
Register
Counter
CPU
Registers
Interrupt
Vector
Direct Memory Access
DMA
Write