Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 43
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
CTC Read Cycle
CS0. CS1, CE
Note:
Figure 9.
Figure 10 illustrates the timing associated with the CTC Read cycle. This
sequence is used when CPU reads the current contents of the down counter.
During clock cycle T2, the Z80 CPU initiates the Read cycle with true
signals at input pins RD (Read), IORQ (I/O Request), and CE (Chip
Enable). A 2-bit binary code appears at CTC inputs CS1 and CS0 (Channel
Select 1 and 0), specifying which of the four CTC channels is being read
from. (See Note below.) On the rising edge of the cycle T3, the valid
contents of the down-counter rising edge of cycle T2 is available on the
Z80 data bus. No additional wait states are allowed.
IORQ
RD
M1
M1 must be false to distinguish the cycle from an interrupt
acknowledge.
CTC Write Cycle
T
1
T
2
Channel Address
T
WA
T
3
Counter/Timer Channels
< % 2 7 2 G T K R J G T C N U
T
1
7 U G T / C P W C N
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