ML610Q409-NNNTBZ03A7 Rohm Semiconductor, ML610Q409-NNNTBZ03A7 Datasheet - Page 213

• Manufacturer Part Number: ML610Q409-NNNTBZ03A7
• Description: MCU 8BIT 16K FLASH 4CH 100-TQFP
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of ML610Q409-NNNTBZ03A7

• Core Processor: nX-U8/100
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SSP, UART/USART
• Peripherals: LCD, Melody Driver, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.25 V ~ 3.6 V
• Data Converters: A/D 2x16b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 100-TFQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

12.3.5.3 Receive Margin
If there is an error between the sender baud rate and the baud rate generated by the baud rate generator of this LSI, the
error accumulates until the last stop bit loading in one frame, decreasing the receive margin. This receive margin needs
to be fully considered, particularly when the baud rate generator clock uses a lower frequency such as LSCLK and
LSCLK x 2 to realize a higher bit rate (e.g., 4800bps, 9600bps).
Figure 13-9 shows the baud rate errors and receive margin waveforms.
Note:
Ideal waveform (RXD0)
In system designing, ensure a sufficient receive margin considering the baud rate difference between sender and
receiver, start bit detection delay, distortion in receive data, and influence of noise.
Sender baud rate is
Sender baud rate is
Sampling Timing
slow (RXD0)
fast (RXD0)
Figure 13-9 Baud Rate Error and Receive Margin
Start
Start
Start
13-19
ML610Q407/ML610Q408/ML610Q409 User's Manual
U0RSS=1
U0RSS=0
Chapter 13 UART
Stop
Stop
Stop