ML610Q429-NNNTBZ03A7 Rohm Semiconductor, ML610Q429-NNNTBZ03A7 Datasheet - Page 311

• Manufacturer Part Number: ML610Q429-NNNTBZ03A7
• Description: MCU 8BIT 48K FLASH 128-TQFP
• Manufacturer: Rohm Semiconductor

Specifications of ML610Q429-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: 20
• Program Memory Size: 48KB (24K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K 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 23-9 and 23-11, 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 23-12 and 23-13; 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 23-11 Temperature Characteristics of
RCCLK
(RS0)
f
Figure 23-13 Oscillation Characteristics of Reference Resistor
RCLK
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
23 – 16
f
(RT0)
RCCLK
Chapter 23 RC Oscillation Type A/D Converter
Figure 23-12 Oscillation Characteristics
f
RCCLK
Ideal
(RS0) =
Includes errors due to factors other
than RT0
ML610Q428/ML610Q429 User’s Manual
f
RCLK
k
RCCLK
(RS0) =
of Thermistor
·CS0·RS0
RCCLK
1
Temperature T
(RT0) and f
k
RCCLK
Ideal
·CS0·RT0
1
RCCLK
(RS0).