ML610Q432A-NNNTC03A7 Rohm Semiconductor, ML610Q432A-NNNTC03A7 Datasheet - Page 326

• Manufacturer Part Number: ML610Q432A-NNNTC03A7
• Description: MCU 8BIT 64K FLASH 128-TQFP
• Manufacturer: Rohm Semiconductor

Specifications of ML610Q432A-NNNTC03A7

• 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: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 3K 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

connected to the CS0 pin. This is for making the conditions other than resistance equal to eliminate the error factor in
oscillation characteristics.
As shown in Figures 25-9 and 25-11, the RT0 value depends on temperature T and the RS0 value is assumed to be
constant regardless of temperature T. It is ideal if the characteristics of the oscillation frequency fOSC to temperature
T using these resistances will be like the solid lines in Figures 25-12 and 25-13; however, in reality, it would appear that
almost the same; therefore, errors can almost be eliminated by using the ratio between f
The ratio between f
To convert from an RT0 value to a digital value, the ratio is used between a) the oscillation frequency by the thermistor
connected to the RT0 pin and the capacitor connected to the CS0 pin and b) the oscillation frequency by the reference
resistor (which ideally should have no temperature characteristics) connected to the RS0 pin and the capacitor
they will be like the dotted lines due to error factors such as IC temperature characteristics.
Since the condition of f
should ideally depend only on RT0.
Figure 25-11 Temperature Characteristics of
RCCLK
(RS0)
f
Figure 25-13 Oscillation Characteristics of Reference Resistor
R CLK
RCCLK
Reference Resistor
(RT0) and f
(RT0) and that of f
Includes errors due to factors
other than RT0
Temperature T
RCCLK
(RS0) is equivalent to the above-mentioned A/D conversion value nT0 that
RCCLK
Temperature T
(RS0) are the same except for the resistances, the error ratios are
25 – 16
f
(RT0)
RCCLK
f
RCCLK
Chapter 25 RC Oscillation Type A/D Converter
Figure 25-12 Oscillation Characteristics
(RS0) =
Ideal
Includes errors due to factors other
than RT0
ML610Q431/ML610Q432 User’s Manual
f
RCLK
k
RCC LK
(RS0) =
·(CS0+CVR)·RS0
of Thermistor
RCCLK
k
1
RC CLK
Temperature T
(RT0) and f
·(CS0+CVR)·RT0
Ideal
1
RCCLK
(RS0).