ML610Q422-NNNTBZ03A7 Rohm Semiconductor, ML610Q422-NNNTBZ03A7 Datasheet - Page 168

• 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

12.2.2
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:
When the WDT interrupt (WDTINT) occurs by the first WDT counter overflow, the counter and the internal pointer
(WDP) are initialiaed for a half cycle of low speed clock (about 15us). During the time period that they are initialized,
writing to WDTCON is disable and the logic of WDP does not change. Therefore, in the case of that you have
program codes handle to clear the WDT when the first overflow WDT interrupt occurs and also the codes run at
high-speed system clock, please check the WDP gets reversed after writing to WDTCON to see if the writing was
surely successful. For example of the program code, see Section 12.3.1, "Handling example when you do not want to
use the watch dog timer".
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”.
R/W
Watchdog Timer Control Register (WDTCON)
R/W
d7
7
0
R/W
d6
6
0
R/W
d5
5
0
R/W
d4
12 – 3
4
0
R/W
d3
0
3
ML610Q431/ML610Q432 User’s Manual
R/W
d2
2
0
Chapter 13 Watchdog Timer
R/W
d1
1
0
WDP/d0
R/W
0
0