ML610Q409-NNNTBZ03A7 Rohm Semiconductor, ML610Q409-NNNTBZ03A7 Datasheet - Page 291

• 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

21. RC Oscillation Type A/D Converter
21.1 Overview
21.1.1 Features
21.1.2 Configuration
This LSI has a built-in 2-channel RC oscillation type A/D converter (RC-ADC).
The RC-ADC converts resistance values or capacitance values to digital values by counting the oscillator clock whose
frequency changes according to the resistor or capacitor connected to the RC oscillator circuits. By using a thermistor or
humidity sensor as a resistor, a thermometer or hygrometer can be formed.
In addition, a different sensor for each of the two channels of RC-ADC’s RC oscillator circuit can be used to broaden
RC-ADC applications; for example, the converter can be used for expansion of measurement range or measurement at
two points.
For input clocks, see Chapter 6, “Clock Generation Circuit”.
The RC-ADC consists of two RC oscillator circuits to form two channels, Counter A (RADCA0 and RADCA1) and
Counter B (RADCB0 and RADCB1) as 16-bit binary counters, and an RC-ADC control circuit (RADCON, RADMOD).
Figure 21-1 shows the configuration of the RC-ADC.
• 2-channel system by time division
P34/RCT0
LSCLK×2
P35/RCM
P32/RS0
P31/CS0
P46/RS1
P45/CS1
P33/RT0
P47/RT1
RADMOD
RADCON
RADCA0∼1
RADCB0∼1
P30/IN0
P44/IN1
HSCLK
LSCLK
Data bus
(RCOSC0)
(RCOSC1)
oscillation
oscillation
control
: RC-ADC mode register
: RC-ADC control register
: RC-ADC Counter A register
: RC-ADC Counter B register
circuit
Clock
RC
RC
Figure 21-1 Configuration of RC-ADC
BSCLK
RCCLK
control circuit
(RADMOD)
(RADCON)
RC-ADC
21-1
Counter B (RADCB0 and
RADCB1)
Counter A (RADCA0 and
binary counter
binary counter
16bits
16bits
Chapter 21 RC Oscillation Type A/D Converter
RADCA1)
OVFA
OVFB
Interrupt
control
RADINT