EZ80190AZ050EG Zilog, EZ80190AZ050EG Datasheet - Page 132
EZ80190AZ050EG
Manufacturer Part Number
EZ80190AZ050EG
Description
IC WEBSERVER 50MHZ XTEMP 100LQFP
Manufacturer
Zilog
Datasheet
1.EZ80190AZ050SG.pdf
(221 pages)
Specifications of EZ80190AZ050EG
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
EZ80190x
Core
eZ80
Data Bus Width
8 bit
Program Memory Type
ROMLess
Data Ram Size
8 KB
Interface Type
I2C, IrDA, SPI, UART
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
32
Number Of Timers
6
Operating Supply Voltage
3 V to 3.6 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
269-3865
EZ80190AZ050EG
EZ80190AZ050EG
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PS006614-1208
Example 1—
not shifted. If the MACC Accumulator is loaded with a 40-bit value using a succession of
8-bit writes, the procedure appears as follows:
1. Write the LSB to the MACC Accumulator
2. Write the second byte to the MACC Accumulator
3. Write the third byte to the MACC Accumulator
4. Write the fourth byte to the MACC Accumulator
5. Write the MSB to the MACC Accumulator
Example 2—
registers are left-shifted by 3 bits. The 3 lsbs are filled with a NOISE value of 1. If the
MACC Accumulator is loaded with a 40-bit value using a succession of 8-bit writes, the
procedure appears as follows:
1. Write the LSB to the MACC Accumulator
2. Write the second byte to the MACC Accumulator
3. Write the third byte to the MACC Accumulator
4. Write the fourth byte to the MACC Accumulator
5. Write the MSB to the MACC Accumulator
In Example 2, notice that the upper 3 bits of the final write are ignored.
MACC Accumulator [7:0] = MACC_AC0[7:0] = DATA_IN[7:0]
MACC Accumulator [15:8] = MACC_AC1[7:0] = DATA_IN[7:0]
MACC Accumulator [23:16] = MACC_AC2[7:0] = DATA_IN[7:0]
MACC Accumulator [31:24] = MACC_AC3[7:0] = DATA_IN[7:0]
MACC Accumulator [39:32] = MACC_AC4[7:0] = DATA_IN[7:0]
MACC Accumulator [10:0] = {MACC_AC0[7:0], 111b} = {DATA_IN[7:0], 111b}
MACC Accumulator [18:11] = MACC_AC1[7:0] = DATA_IN[7:0]
MACC Accumulator [26:19] = MACC_AC2[7:0] = DATA_IN[7:0]
MACC Accumulator [34:27] = MACC_AC3[7:0] = DATA_IN[7:0]
MACC Accumulator [39:35] = MACC_AC4[4:0] = DATA_IN[4:0]
When IN_SHIFT =
When IN_SHIFT =
011b
000b
, writes to the MACC Accumulator registers are
and NOISE = 1, writes to the MACC Accumulator
Product Specification
Multiply-Accumulator
eZ80190
122
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