Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 179
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z0847006PSG
Manufacturer:
Zilog
Quantity:
22
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UM008101-0601
Figure 66.
The next bus request for the next byte comes after both BUSREQ and BAI
have returned High. In a Z80 environment, BAI returns High one clock
cycle after BUSREQ returns High.
Bus Release on End-of-Block.
When the DMA is programmed to stop on end-of-block in Burst or Contin-
uous modes, an end-of-block causes BUSREQ to go High (inactive) on the
same rising edge of CLK in which the DMA completes the data block
transfer (see Figure 67). The last byte in the block is transferred even if
RDY goes inactive before completion of the last byte operation.
Figure 67.
BUSREQ
BUSREQ
RDY
CLK
BAI
Active
Inactive
DMA Active
Bus Release in Byte Mode
Bus Release on End-of-Block (Burst and Continuous Modes)
Current Byte
Operation
DMA Inactive
DMA
Inactive
< % 2 7 2 G T K R J G T C N U
Direct Memory Access
7 U G T / C P W C N
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