Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 57
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z0847006PSG
Manufacturer:
Zilog
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UM008101-0601
Block Transfer
Simultaneous
also requires external logic and inhibits memory refresh. Additionally, it
reduces DMA throughput.
All DMA transfers interrupt dynamic memory refresh by the CPU and
most of them idle the CPU. It is, therefore, important to consider these
implications when making the trade-off for higher DMA transfer speed.
Conventional
Figure 16.
Programmed
Z80/Z8000
Instruction
Sequential
Instruction
Instruction
Sequence
Transfers
DMA
DMA
D.
B.
C.
A.
Conceptual Comparison of Various I/O Transfer Methods
CPU
CPU
CPU
CPU
Fetch and Read Cycles
Read Cycle
Write Cycle
MEMORY
MEMORY
MEMORY
MEMORY
Write Cycle
Read/Write Cycle
Read Cycle
I/O
I/O
I/O
I/O
Write Cycle
< % 2 7 2 G T K R J G T C N U
Direct Memory Access
DMA
DMA
DMA
DMA
7 U G T / C P W C N
BUS
BUS
BUS
BUS
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