DF3048BVX25WV Renesas Electronics America, DF3048BVX25WV Datasheet - Page 480

• Manufacturer Part Number: DF3048BVX25WV
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25WV

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 12 Watchdog Timer
12.4
During interval timer operation, an overflow generates an interval timer interrupt (WOVI). The
interval timer interrupt is requested whenever the OVF bit is set to 1 in TCSR.
12.5
Contention between TCNT Write and Increment
If a timer counter clock pulse is generated during the T
takes priority and the timer count is not incremented. See figure 12.8.
Changing CKS2 to CKS0 Values
Halt TCNT by clearing the TME bit to 0 in TCSR before changing the values of bits CKS2 to
CKS0.
Rev. 3.00 Sep 27, 2006 page 452 of 872
REJ09B0325-0300
Interrupts
Usage Notes
TCNT
Internal write
signal
TCNT input
clock
TCNT
Figure 12.8 Contention between TCNT Write and Increment
Write cycle: CPU writes to TCNT
T
1
N
T
2
3
state of a write cycle to TCNT, the write
T
3
M
Counter write data