EZ80190AZ050EG Zilog, EZ80190AZ050EG Datasheet - Page 132

• Manufacturer Part Number: EZ80190AZ050EG
• Description: IC WEBSERVER 50MHZ XTEMP 100LQFP
• Manufacturer: Zilog

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

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