DF3048BVX25WV Renesas Electronics America, DF3048BVX25WV Datasheet - Page 415

• 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: -

10.4.8
Buffering operates differently depending on whether a general register is an output compare
register or an input capture register, with further differences in reset-synchronized PWM mode and
complementary PWM mode. Buffering is available only in channels 3 and 4. Buffering operations
under the conditions mentioned above are described next.
General register used for output compare
The buffer register value is transferred to the general register at compare match.
See figure 10.46.
General register used for input capture
The TCNT value is transferred to the general register at input capture. The previous general
register value is transferred to the buffer register.
See figure 10.47.
Complementary PWM mode
The buffer register value is transferred to the general register when TCNT3 and TCNT4
change counting direction. This occurs at the following two times:
Reset-synchronized PWM mode
The buffer register value is transferred to the general register at compare match A3.
Input capture signal
When TCNT3 compare matches GRA3
When TCNT4 underflows
Buffering
BR
BR
Figure 10.46 Compare Match Buffering
Figure 10.47 Input Capture Buffering
Compare match signal
GR
GR
Section 10 16-Bit Integrated Timer Unit (ITU)
Rev. 3.00 Sep 27, 2006 page 387 of 872
Comparator
REJ09B0325-0300
TCNT
TCNT