EZ80L92AZ050SG Zilog, EZ80L92AZ050SG Datasheet - Page 179

• Manufacturer Part Number: EZ80L92AZ050SG
• Description: IC WEBSERVER 50MHZ 100LQFP
• Manufacturer: Zilog

Specifications of EZ80L92AZ050SG

• Processor Type: eZ80
• Features: High Speed, Single-Cycle Instruction-Fetch
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Processor Series: EZ80L92x
• Core: eZ80
• Data Bus Width: 8 bit
• Program Memory Size: 64 KB
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 6
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: eZ80L920210ZCO
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3878; EZ80L92AZ050SG

PS013014-0107
ZDI Write Data Registers
These three registers are used in the ZDI Write-Only register address space to store the
data that is written when a Write instruction is sent to the ZDI Read/Write Control register
(ZDI_RW_CTL). The ZDI Read/Write Control register is located at ZDI address
immediately following the ZDI Write Data registers. As a result, the ZDI Master is
allowed to write the data to {ZDI_WR_U, ZDI_WR_H, ZDI_WR_L} and the Write com-
mand in one data transfer operation. See
Table 95. ZDI Write Data Registers (ZDI_WR_U = 13h, ZDI_WR_H = 14h, and
ZDI_WR_L = 15h in the ZDI Register Write-Only Address Space)
ZDI Read/Write Control Register
The ZDI Read/Write Control register is used in the ZDI Write-Only Register address to
read data from, write data to, and manipulate the CPU’s registers or memory locations.
When this register is written, the eZ80L92 immediately performs the operation corre-
sponding to the data value written as described in
When a Read operation is executed via this register, the requested data values are placed in
the ZDI Read Data registers {ZDI_RD_U, ZDI_RD_H, ZDI_RD_L}. When a Write oper-
ation is executed via this register, the Write data is taken from the ZDI Write Data registers
{ZDI_WR_U, ZDI_WR_H, ZDI_WR_L}. See
CPU registers, refer to the eZ80
Bit
Reset
CPU Access
Note: X = Undefined; W = Write.
Bit
Position
[7:0]
ZDI_WR_L,
ZDI_WR_H,
or
ZDI_WR_L
00h–FFh These registers contain the data that is written during
Value
W
X
7
®
CPU User Manual (UM0077).
Description
execution of a Write operation defined by the
ZDI_RW_CTL register. The 24-bit data value is stored
as {ZDI_WR_U, ZDI_WR_H, ZDI_WR_L}. If less than
24 bits of data are required to complete the required
operation, the data is taken from the least significant
byte(s).
W
X
6
Table
W
X
5
95.
Table
Table
W
X
4
96. For more information on the
96.
W
X
3
Product Specification
W
X
2
ZiLOG Debug Interface
eZ80L92 MCU
W
X
1
16h
W
X
0
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