ML610Q409-NNNTBZ03A7 Rohm Semiconductor, ML610Q409-NNNTBZ03A7 Datasheet - Page 170

• 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

11.3.1 Handling example when you do not want to use the watch dog timer
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.
Example programming code:
__DI();
do
{
} while(WDP != 1)
WDTCON = 0xa5;
__EI();
WDTCON = 0x5a;
// Disable multi-interrupts
11-7
ML610Q407/ML610Q408/ML610Q409 User's Manual
Chapter 11 Watchdog Timer