DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 433

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

12.3.3
RSTCSR controls to generate the internal reset signal when TCNT overflows, and selects the type
of internal reset signal. RSTCSR is initialized by a reset signal from the RES pin, and not by the
WDT internal reset signal caused by overflows.
Note:
Bit
7
6
5
4 to 0
*
Reset Control/Status Register (RSTCSR) (WDT_0 only)
Bit Name
WOVF
RSTE
RSTS
⎯
Only 0 can be written, to clear the flag.
Initial
Value
0
0
0
All 1
R/W
R/(W)* Watchdog Overflow Flag
R/W
R/W
⎯
Description
This bit is set when TCNT overflows in watchdog timer
mode. This bit cannot be set in interval timer mode, and
only 0 can be written, to clear the flag.
[Setting condition]
Set when TCNT overflows (changed from H'FF to H'00)
in watchdog timer mode
[Clearing condition]
Cleared by reading RSTCSR when WOVF = 1, and
then writing 0 to WOVF
Reset Enable
Specifies whether or not a reset signal is generated in
the chip if TCNT overflows during watchdog timer
operation.
0: Reset signal is not generated even if TCNT
1: Reset signal is generated if TCNT overflows.
Reset Select
Selects the type of internal reset, which is generated if
TCNT overflows during watchdog timer operation.
0: Power-on reset
1: Manual reset
Reserved
These bits are always read as 1 and cannot be
modified.
overflows. (Though this LSI is not reset, TCNT and
TCSR in WDT are reset.)
Rev. 6.00 Sep. 24, 2009 Page 385 of 928
Section 12 Watchdog Timer (WDT)
REJ09B0099-0600