ML610Q429-NNNTBZ03A7 Rohm Semiconductor, ML610Q429-NNNTBZ03A7 Datasheet - Page 308

• 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: -

(2) Operation in Counter B reference mode
Figure 23-7 shows the operation timing in Counter B reference mode.
Following is an example of operation procedure in Counter B reference mode:
When the RARUN bit is set to “1” and the RCON signal (signal synchronized with the fall of the base clock) is set
to”1”, the RC oscillator circuit starts operation and Counter B starts counting of the RC oscillator clock (RCCLK).
When Counter B overflows, the RARUN bit is automatically reset (6) and conversion operation terminates. At the
same time, an RC-ADC interrupt request (RADINT) occurs. (7)
When the RCON signal is set to “1”, Counter A starts counting of the base clock (BSCLK). When the RARUN bit is
reset due to overflow of Counter B, Counter A stops counting.
The final count “nA1” of Counter A is the CLK count value during the gate time “nB1 t
following expression:
That is, “nA1” is a value inversely proportional to the RC oscillation frequency f
Preset to Counter B (RADCB2–0) the value obtained by subtracting the count value “nB1” from the maximum
value + 1 (1000000H). The product of the count value “nB1” and the RCCLKclock period indicates the gate
time.
Preset “000000H” to Counter A (RADCA2–0).
Set the OM3–OM0 bits of RADMOD to desired oscillation mode (see Table 23-1).
Set the RADI bit of RADMOD to “1” to specify generating of an interrupt request signal by Counter B overflow.
Set the RARUN bit of RADCON to “1” to start A/D conversion.
nA1
≅
nB1•
t
t
RCCLK
BSCLK
∝
23 – 13
f
RCCLK
1
Chapter 23 RC Oscillation Type A/D Converter
ML610Q428/ML610Q429 User’s Manual
RCCLK
.
RCCLK
” and is expressed by the