Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 32
![IC 6MHZ Z80 NMOS DART 40-DIP](/photos/6/57/65796/269-40-dip_sml.jpg)
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
< % 2 7 2 G T K R J G T C N U
7 U G T / C P W C N
IORQ
Input/Output Request from CPU (input, active Low). The IORQ signal
is used in conjunction with the CE and RD signals to transfer data and
channel control words between the Z80 CPU and the CTC. During a CTC
Write cycle, IORQ and CE must be true and RD false. The CTC does not
receive a specific write signal. Instead it generates one internally from the
inverse of a valid RD signal. In a CTC Read cycle, IORQ, CE, and RD
must be active to place the contents of the down-counter on the Z80 data
bus. If IORQ and M1 are both true, the CPU is acknowledging an interrupt
request, and the highest priority interrupting channel places its interrupt
vector on the Z80 data bus.
RD
Read Cycle Status from the CPU (input, active Low). The RD signal is
used in conjunction with the IORQ and CE signals to transfer data and
channel control words between the Z80 CPU and the CTC. During a CTC
Write Cycle, IORQ and CE must be true and RD false. The CTC does not
receive a specific write signal, instead it generates one internally from the
inverse of a valid RD signal. In a CTC Read cycle, IORQ CE, and RD must
be active to place the contents of the down-counter on the Z80 data bus.
IEI
Interrupt Enable In (input, active High). This signal is used to form a
system-wide interrupt daisy-chain which establishes priorities when more
than one peripheral device in the system has interrupting capability. A High
level on this pin indicates that no other interrupting devices of higher
priority in the daisy chain are being serviced by the Z80 CPU.
IEO
Interrupt Enable Out (output, active High. The IEO signal, in
conjunction with IEI, is used to form a system-wide interrupt priority
daisy-chain. IEO is High only if IEI is High and the CPU is not servicing
Counter/Timer Channels
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