DF38602RFT10 Renesas Electronics America, DF38602RFT10 Datasheet - Page 239

• Manufacturer Part Number: DF38602RFT10
• Description: MCU 3V 16K 32-QFN
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H SLPr

Specifications of DF38602RFT10

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 10MHz
• Connectivity: I²C, IrDA, SCI, SSU
• Peripherals: POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F38602RFT10; HD64F38602RFT10

12.2.2
TCSRWD2 performs the TCSRWD2 write control, mode switching, and interrupt control.
TCSRWD2 must be rewritten by using the MOV instruction. The bit manipulation instruction
cannot be used to change the setting value.
Bit
7
6
5
4
3
Timer Control/Status Register WD2 (TCSRWD2)
Bit Name
OVF
B5WI
WT/IT
B3WI
IEOVF
Initial
Value
0
1
0
1
0
R/W
R/(W)*
R/(W)*
R/(W)*
R/(W)*
R/(W)*
1
2
3
2
3
Description
Overflow Flag
Indicates that TCWD has overflowed (changes from H'FF
to H'00).
[Setting condition]
When TCWD overflows (changes from H'FF to H'00)
When internal reset request generation is selected in
watchdog timer mode, this bit is cleared automatically by
the internal reset after it has been set.
[Clearing condition]
•
Bit 5 Write Inhibit
The WT/IT bit can be written only when the write value of
the B5WI bit is 0. This bit is always read as 1.
Timer Mode Select
Selects whether the WDT is used as a watchdog timer or
interval timer.
0: Watchdog timer mode
1: Interval timer mode
Bit 3 Write Inhibit
The IEOVF bit can be written only when the write value of
the B3WI bit is 0. This bit is always read as 1.
Overflow Interrupt Enable
Enables or disables an overflow interrupt request in
interval timer mode.
0: Disables an overflow interrupt
1: Enables an overflow interrupt
When TCSRWD2 is read when OVF = 1, then 0 is
written to OVF
Rev. 3.00 May 15, 2007 Page 205 of 518
Section 12 Watchdog Timer
REJ09B0152-0300