DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 710

• Manufacturer Part Number: DS72030W200FPV
• Description: MPU, 32BIT, SH7203, ROMLESS, 240QFP
• Manufacturer: Renesas Electronics America
• Series: SH7200r

Specifications of DS72030W200FPV

• Core Size: 32bit
• Program Memory Size: 32KB
• Cpu Speed: 200MHz
• Digital Ic Case Style: QFP
• No. Of Pins: 240
• Supply Voltage Range: 1.1V To 1.3V
• Operating Temperature Range: -20°C To +85°C
• Svhc: No SVHC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 13 Watchdog Timer (WDT)
13.3
The WDT has the following registers.
Table 13.2 Register Configuration
Note:
13.3.1
WTCNT is an 8-bit readable/writable register that is incremented by cycles of the selected clock
signal. When an overflow occurs, it generates a watchdog timer overflow signal (WDTOVF) in
watchdog timer mode and an interrupt in interval timer mode.
Use word access to write to WTCNT, writing H'5A in the upper byte. Use byte access to read
from WTCNT.
Note: The method for writing to WTCNT differs from that for other registers to prevent
Rev. 3.00 Sep. 28, 2009 Page 678 of 1650
REJ09B0313-0300
Register Name
Watchdog timer counter
Watchdog timer control/status
register
Watchdog reset control/status
register
* For the access size, see section 13.3.4, Notes on Register Access.
erroneous writes. See section 13.3.4, Notes on Register Access, for details.
Register Descriptions
Watchdog Timer Counter (WTCNT)
Initial value:
R/W:
Bit:
R/W
7
0
Abbreviation R/W
WTCNT
WTCSR
WRCSR
R/W
6
0
R/W
5
0
R/W
4
0
R/W
R/W
R/W
R/W
3
0
Initial
Value
H'00
H'18
H'1F
R/W
2
0
R/W
1
0
Address
H'FFFE0002
H'FFFE0000
H'FFFE0004
R/W
0
0
Access
Size
16*
16*
16*