Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 157
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
Quantity:
22
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UM008101-0601
Z80 DMA and Z80 SIO Example
Figure 54.
A common DMA application is performing data transfers over a serial data
link. The Z80 SIO peripheral is used to interface to the link, providing
conversion between serial and parallel data formats, synchronization, and
other functions.
Comparing the efficiency of interrupt driven and DMA data transfers
requires examination of the event sequences during the brief time intervals
in which the SIO needs a character (byte) transfer. Most of the time the SIO
is busy transmitting or receiving message bits and requires no service.
The SIO must be programmed to drive its WAIT/RDY line as a RDY signal
to the DMA, which is programmed for active-Low RDY in Byte mode.
DMA.HAS.BUS
DMA.CE
CTC.CE
SIO.CE
PIO.CE
CARD.IEO
CARD.IEI
IORQ
RD
M1
Data Bus Buffer Control Example
System Data Bus
ON.CARD.ENABLE
RD
DMA.WRITE
DIR
47LS
245
EN
ON.CARD.INT ACK
DRIVE.DATA.OUT
On-Card Data Bus
ON.CARD.READ
< % 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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