ML610Q432A-NNNTC03A7 Rohm Semiconductor, ML610Q432A-NNNTC03A7 Datasheet - Page 186

• 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: -

13.3.1
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 watchdog timer
Example programming code:
__DI();
do
{
} while(WDP != 1)
WDTCON = 0xa5;
__EI();
WDTCON = 0x5a;
// Disable multi-interrupts
13 – 7
ML610Q431/ML610Q432 User’s Manual
Chapter 13 Watchdog Timer