Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 99
Z0847006PSG
Manufacturer Part Number
Z0847006PSG
Description
IC 6MHZ Z80 NMOS DART 40-DIP
Manufacturer
Zilog
Series
Z80r
Datasheet
1.Z0847006PSG.pdf
(330 pages)
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
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< % 2 7 2 G T K R J G T C N U
7 U G T / C P W C N
status bit is not set as it would be without the Auto Restart. Therefore, the
interrupt vector cannot indicate the specific interrupt cause, for example,
Status Affects Vector is not effective.
The Z80 CPU acknowledges the interrupt by pulling its M1 and IORQ lines
low for one machine cycle (see the “Timing” chapter). This causes the
DMA to put its 8-bit interrupt vector on the data bus, thereby identifying
itself and optionally identifying the origin of the interrupt. The CPU uses
the vector to access an interrupt service routine, which is then executed.
The interrupt service routine typically reenables the DMA to request the
bus and cause interrupts again.
For CPUs that have no interrupt acknowledge or a noncompatible one,
DMA control bytes can be written (usually in the interrupt service routine)
to simulate the same functions.
UM008101-0601
Direct Memory Access
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