ML610Q429-NNNTBZ03A7 Rohm Semiconductor, ML610Q429-NNNTBZ03A7 Datasheet - Page 163

• 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: -

11.2.2
Address: 0F00EH
Access: W
Access size: 8 bits
Initial value: 00H
WDTCON is a special function register (SFR) to clear the WDT counter.
When WDTCON is read, the value of the internal pointer (WDP) is read from bit 0.
[Description of Bits]
• WDP/d0 (bit 0)
• d7-d0 (bits 7-0)
Note:
Writing to WDTCON becomes enable after the system reset or releasing STOP mode and then the low-speed clock
Initial value
WDTCON
The value of the internal pointer (WDP) is read from this bit. The WDP is reset to “0” at the system reset or Watch
Dog Timer overflow and is inverted every writing to WDTCON.
This bit is used to write data to clear the WDT counter. Write “5AH” on the condition of WDP is “0” and write
“0A5H” on the condition of WDP is “1”.
(LSCLK) oscillation starts. Untill the low-speed clock oscillation start, the WDP will not be inverted even if writing
to the WDTCON. Therefore, please check the WDP before writing to the WDTCON to determine writing “5AH”
or “0A5H”.
R/W
Program example
Watchdog Timer Control Register (WDTCON)
if ( WDP == 1 ){
}
WDTCON = 0x5a;
WDTCON = 0xa5;
WDTCON = 0xa5;
R/W
d7
7
0
R/W
d6
0
6
/* WDP : 1 -> 0 */
/* WDP : 0 -> 1 */
/* WDP : 1 -> 0 */
R/W
d5
5
0
R/W
d4
11 – 3
4
0
R/W
d3
3
0
ML610Q428/ML610Q429 User’s Manual
R/W
d2
2
0
Chapter 11 Watchdog Timer
R/W
d1
0
1
WDP/d0
R/W
0
0