EZ80190AZ050SC00TR Zilog, EZ80190AZ050SC00TR Datasheet - Page 163
![IC EZ80 ACCLAIM 50MHZ 100LQFP](/photos/6/76/67664/269-100-lqfp_sml.jpg)
EZ80190AZ050SC00TR
Manufacturer Part Number
EZ80190AZ050SC00TR
Description
IC EZ80 ACCLAIM 50MHZ 100LQFP
Manufacturer
Zilog
Datasheet
1.EZ80190AZ050SG.pdf
(221 pages)
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
Available stocks
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Manufacturer
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Operation Of The eZ80190 Device During ZDI Breakpoints
ZDI Write Only Registers
PS006614-1208
ZCL
ZDA
ZDI Block READ
address
lsb of
ZDI
A0
A block READ operation is initiated the same as a single-byte read; however, the ZDI
master continues to clock in the next byte from the ZDI slave as the ZDI slave continues to
output data. The ZDI register address counter increments with each read. If the ZDI regis-
ter address reaches the end of the Read Only ZDI register address space (
stops incrementing.
If the ZDI forces the CPU to break, only the CPU suspends operation. The system clock
continues to operate and drive other peripherals. Those peripherals that can operate auton-
omously from the CPU may continue to operate, if so enabled. For example, the WDT and
Programmable Reload Timers continue to count during a ZDI breakpoint.
When using the ZDI interface, any write or read operations of peripheral registers in the
I/O address space produces the same effect as read or write operations using the CPU.
Because many register Read/Write operations exhibit secondary effects, such as clearing
flags or causing operations to commence, the effects of the Read/Write operations during a
ZDI break must be taken into consideration. As an example, reading or writing the MACC
Accumulator Byte 4 register can cause a bank switch to occur within the MACC.
Table 81
addresses are shared with ZDI Read Only registers.
7
Read
8
on page 154 lists the ZDI Write Only registers. Many of the ZDI Write Only
1-bit data
separator
1
9
Figure 34
DATA
byte 1
msb
D7
of
1
Figure 34. ZDI Block Data Read Timing
D6
2
displays ZDI block READ timing.
ZDI Data Bytes
D1
7
byte 1
DATA
D0
lsb
8
of
1-bit data
separator
9
1
DATA
byte 2
msb
D7
Product Specification
of
1
Zilog Debug Interface
D6
2
20h
), the address
eZ80190
153
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