ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 164
ez80190
Manufacturer Part Number
ez80190
Description
Ez80190 Microprocessor
Manufacturer
ZiLOG Semiconductor
Datasheet
1.EZ80190.pdf
(222 pages)
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PS006613-0306
ZCL
ZDA
ZDI Write Operations
ZCL
ZDA
address
lsb of
ZDI
A0
ZDI Single-Byte Write
For single-byte write operations, the address and write-control bit are first written
to the ZDI block. Following the 1-bit byte separator, the data is shifted into the ZDI
block on the next 8 rising edges of ZCL. The master terminates activity after 8
clock cycles.
tions.
7
Signal
Start
S
Write
8
separator
1-bit data
msb
Figure 31. ZDI Single-Byte Data Write Timing
A6
1
1
9
Figure 31
Figure 30. ZDI Address Write Timing
DATA
msb
D7
A5
of
2
1
illustrates the timing for ZDI single-byte WRITE opera-
D6
A4
2
3
PRELIMINARY
ZDI Address Byte
D5
3
A3
4
ZDI Data Byte
D4
4
A2
5
D3
5
A1
6
eZ80190 Product Specification
D2
6
A0
lsb
7
D1
0 = write
1 = read
7
R/W
8
Byte Separator
START Signal
DATA
or new ZDI
Single-Bit
ZiLOG Debug Interface
D0
lsb
of
8
START signal
1
end of data
or new ZDI
9
1
9
150
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