EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 159

• Manufacturer Part Number: EZ80190AZ050SC00TR
• Description: IC EZ80 ACCLAIM 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80190AZ050SC00TR

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ZDI START Condition
PS006614-1208
ZCL
ZDA
ZCL
ZDA
All ZDI commands are preceded by the ZDI START signal, which is a High-to-Low tran-
sition of ZDA when ZCL is High. The ZDI slave on the eZ80190 device continually mon-
itors the ZDA and ZCL lines for the START signal and does not respond to any command
until this condition is met. The master pulls ZDA Low, with ZCL High, to indicate the
beginning of a data transfer with the ZDI block.
ZDI START signal prior to writing and reading data, respectively. A Low-to-High transi-
tion of ZDA while the ZCL is High produces no effect.
Data is shifted in during a write to the ZDI block on the rising edge of ZCL, as displayed
in
ZCL, as displayed in
the ninth cycle and holds the ZCL signal High.
Figure
Start Signal
Start Signal
28. Data is shifted out during a read from the ZDI block on the falling edge of
Change
Change
ZDA
ZDA
Figure
ZDI Data In
(write)
29. When an operation is completed, the master stops during
Figure 28. ZDI Write Timing
Figure 29. ZDI Read Timing
Stable
Stable
ZDA
ZDA
ZDI Data Out
(read)
Change
Change
ZDA
ZDA
ZDI Data In
(write)
Figure 28
Stable
Stable
ZDA
ZDA
ZDI Data Out
and
(read)
Figure 29
Product Specification
Change
Change
ZDA
ZDA
Zilog Debug Interface
display a valid
eZ80190
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