ML610Q422-NNNTBZ03A7 Rohm Semiconductor, ML610Q422-NNNTBZ03A7 Datasheet - Page 172

• 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

12.3.1
WDT counter is a free-run counter that starts count-up automatically after the system reset released and the
low-speed clock (LSCLK) starts oscillating. If the WDT counter gets overflow, the WDT non-maskable
interrupt occurs and then a system reset occurs. Therefore, it is needed to clear the WDT counter even if you do
not want to use the WDT as a fale-safe function.
See following example programming codes to clear the WDT counter in the interrupt routine.
Handling example when you do not want to use the watch dog timer
Example programming code:
__DI();
do
{
} while(WDP != 1)
WDTCON = 0xa5;
__EI();
WDTCON = 0x5a;
// Disable multi-interrupts
12 – 7
ML610Q431/ML610Q432 User’s Manual
Chapter 13 Watchdog Timer