D12321VF25V Renesas Electronics America, D12321VF25V Datasheet - Page 619

• Manufacturer Part Number: D12321VF25V
• Description: IC H8S/2300 MCU ROMLESS 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12321VF25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 86
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

13.2.3
Note: * Only 0 can be written, to clear the flag.
RSTCSR is an 8-bit readable/writable * register that controls the generation of the internal reset
signal when TCNT overflows, and selects the type of internal reset signal.
RSTCSR is initialized to H'1F by a reset signal from the RES pin, but not by the WDT internal
reset signal caused by overflows.
Note: * RSTCSR is write-protected by a password to prevent accidental overwriting. For details
Bit 7—Watchdog Timer Overflow Flag (WOVF): Indicates that TCNT has overflowed
(changed from H'FF to H'00) during watchdog timer operation. This bit is not set in interval timer
mode.
Bit 7
WOVF
0
1
Bit 6—Reset Enable (RSTE): Specifies whether or not a reset signal is generated in the chip if
TCNT overflows during watchdog timer operation.
Bit 6
RSTE
0
1
Note: * The modules within the chip are not reset, but TCNT and TCSR within the WDT are reset.
Bit
Initial value :
R/W
see section 13.2.4, Notes on Register Access.
Reset Control/Status Register (RSTCSR)
Description
[Clearing condition]
Cleared by reading RSTCSR when WOVF = 1, then writing 0 to WOVF
[Setting condition]
Set when TCNT overflows (changes from H'FF to H'00) during watchdog timer
operation
Description
Reset signal is not generated if TCNT overflows *
Reset signal is generated if TCNT overflows
:
:
R/(W) *
WOVF
7
0
RSTE
R/W
6
0
R/W
—
5
0
—
—
4
1
Rev.6.00 Sep. 27, 2007 Page 587 of 1268
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3
1
Section 13 Watchdog Timer
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—
2
1
REJ09B0220-0600
—
—
1
1
(Initial value)
(Initial value)
—
—
0
1