HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 381

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Bit 7—Overflow Flag (OVF): This status flag indicates that the timer counter has overflowed
from H'FF to H'00.
Bit 6—Timer Mode Select (WT/
interval timer. If used as an interval timer, the WDT generates an interval timer interrupt request
when TCNT overflows. If used as a watchdog timer, the WDT generates a reset signal when
TCNT overflows.
Bit 5—Timer Enable (TME): Selects whether TCNT runs or is halted. When WT/
the software standby bit (SSBY) to 0 in SYSCR before setting TME. When setting SSBY to 1,
TME should be cleared to 0.
0
1
Bits 4 and 3—Reserved: These bits cannot be modified and are always read as 1.
Bit 7
OVF
0
1
Bit 6
WT/
0
1
Bit 5
TME
I T
Interval timer: requests interval timer interrupts
Watchdog timer: generates a reset signal
TCNT is initialized to H'00 and halted
TCNT is counting
Description
[Clearing condition]
Cleared by reading OVF when OVF = 1, then writing 0 in OVF
[Setting condition]
Set when TCNT changes from H'FF to H'00
Description
Description
I T
) : Selects whether to use the WDT as a watchdog timer or
Rev. 2.00 Sep 20, 2005 page 341 of 800
Section 11 Watchdog Timer
REJ09B0260-0200
(Initial value)
I T
(Initial value)
(Initial value)
= 1, clear