ML610Q422-NNNTBZ03A7 Rohm Semiconductor, ML610Q422-NNNTBZ03A7 Datasheet - Page 200

• Manufacturer Part Number: ML610Q422-NNNTBZ03A7
• Description: MCU 8BIT 32K FLASH 22CH 120-TQFP
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of ML610Q422-NNNTBZ03A7

• Core Processor: nX-U8/100
• Core Size: 8-Bit
• Speed: 4.2MHz
• Connectivity: I²C, SSP, UART/USART
• Peripherals: LCD, Melody Driver, POR, PWM, WDT
• Number Of I /o: 14
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.1 V ~ 3.6 V
• Data Converters: A/D 2x12b, 2x24b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 100-TFQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

14.3.2
Baud rates are generated by the baud generator.
The baud rate generator generates a baud rate by counting the clock selected by the baud rate clock selection bits
(U0CK1, U0CK0) of the UART0 mode register 0 (UA0MOD0). The count value of the baud rate generator can be set
by writing it in the UART0 baud rate register H or L (UA0BRTH, UA0BRTL). The maximum count is 4096.
The setting values of UA0BRTH and UA0BRTL are expressed by the following equation.
Table 14-2 lists the count values for typical baud rates.
Note:
When UA0BRTH or UA0BRTL is set to a value equal to less than “0007H”, the value set is read from UA0BRTH or
UA0BRTL but the value of the baud rate clock counter is the same as the value when UA0BRTH or UA0BRTL is set
to “0008H”.
When specifying 65.536 kHz (LSCLK×2) for the clock, enable the operation of the 2×low-speed clock by setting bit 2
(ENMLT) of the frequency control register 1 (FCON1) to “1”.
Compensating tolerant of RC oscillation 500kHz with Timer can support errors of +/- 2% or less at 9600bps. See
Section 10.3.2., “Frequency measurement mode”.
115200 bps
19200 bps
38400 bps
57600 bps
Baud rate
1200 bps
2400 bps
4800 bps
9600 bps
Baud Rate
UA0BRTH, L =
32.768 kHz
65.536 kHz
4.096 MHz
4.096 MHz
4.096 MHz
4.096 MHz
4.096 MHz
4.096 MHz
Baud rate
clock
Baud rate generator
clock selection
Table 14-2 Count Values for Typical Baud Rates
U0CK1
0
0
1
1
1
1
1
1
Clock frequency (Hz)
Baud rate (bps)
U0CK0
0
1
*
*
*
*
*
*
Count value
14 – 13
853
427
213
107
27
27
71
36
–1
Count value of the baud rate generator
Approx. 17.3 μs
Approx. 824 μs
Approx. 412 μs
Approx. 208 μs
Approx. 104 μs
Approx. 8.8 μs
Period of 1 bit
Approx. 52 μs
Approx. 26 μs
ML610Q421/ML610Q422 User’s Manual
UA0BRTH
00H
00H
03H
01H
00H
00H
00H
00H
Chapter 14 UART
UA0BRTL
0AAH
0D4H
06AH
054H
046H
023H
1AH
1AH