ez80l92 ZiLOG Semiconductor, ez80l92 Datasheet - Page 170

• Manufacturer Part Number: ez80l92
• Description: Ez80acclaim Flash Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS013014-0107
ZDA
ZCL
ZDI Write Operations
ZDI Address
lsb of
A0
7
can be repeated. This allows repeated Read or Write operations without having to resend
the ZDI command. A START signal must follow to initiate a new ZDI command.
Figure 39
ZDI Single-Byte Write
For single-byte Write operations, the address and write control bit are first written to the
ZDI block. Following the single-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.
Figure 40
ZDA
ZCL
Write
8
Byte Separator
START
Signal
Single-Bit
illustrates the timing for address Writes to ZDI registers.
S
illustrates the timing for ZDI single-byte Write operations.
0/1
9
Figure 40. ZDI Single-Byte Data Write Timing
of DATA
msb
A6
msb
1
D7
1
Figure 39. ZDI Address Write Timing
A5
D6
2
2
A4
3
D5
3
ZDI Address Byte
A3
ZDI Data Byte
4
D4
4
A2
5
D3
5
A1
D2
6
6
A0
lsb
7
D1
Product Specification
7
0 = WRITE
1 = READ
ZiLOG Debug Interface
R/W
of DATA
8
Byte Separator
START Signal
D0
lsb
8
or new ZDI
eZ80L92 MCU
Single-Bit
START Signal
End of Data
or New ZDI
0/1
9
1
9
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