Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 295
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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Manufacturer
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Price
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Part Number:
Z0847006PSG
Manufacturer:
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UM008101-0601
Table 13. Z80 SIO Commands
Command 0 (Null). The Null command has no effect. Normally the null
command instructs the Z80 SIO to wait while the pointers are set for the
following byte.
Command 1 (Send Abort). This command is used only in SDLC mode to
generate a sequence of eight to thirteen 1s.
Command 2 (Reset External/Status Interrupts). After an External/Status
interrupt, such as a change on a modem line or a break condition, the status
bits of RR0 are latched. This command re-enables them, again allowing
Interrupts to occur. Latching the status bits captures short pulses until the
CPU has time to read the change.
Command 3 (Channel Reset). This command performs the same function
as an External Reset, but on a single channel. Channel A Reset also resets
the interrupt prioritization logic. All control registers for the channel must
be rewritten after a Channel Reset command.
After a Z80 SIO Channel Reset, add four system clock cycles before addi-
tional commands or controls write to that channel. This is normally the
same amount of time that is used by the CPU to fetch the next Op Code.
Command CMD2 CMD1 CMD0 Result
0
1
2
3
4
5
6
7
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Null Command (no effect)
Send Abort (SDLC Mode)
Reset External/Status Interrupts
Channel Reset
Enable Interrupt on next Rx Character
Reset Transmitter Interrupt Pending
Error Reset (latches
Return from Interrupt (Channel A)
Z80 CPU Peripherals
Serial Input/Output
User Manual
275
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