HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 405

• Manufacturer Part Number: HD64F3048VTF8
• Description: IC H8 MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048VTF8

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• 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): 2.7 V ~ 5.5 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: -
• Other names: HD64F3048VX8

Output pin
Output pin
Figure 10.42 Changing a General Register Setting by Buffer Transfer (Example 2)
Figure 10.41 Changing a General Register Setting by Buffer Transfer (Caution 2)
General register settings outside the counting range (H'0000 to GRA3)
Waveforms with a duty cycle of 0% or 100% can be output by setting a general register to
a value outside the counting range. When a buffer register is set to a value outside the
counting range, then later restored to a value within the counting range, the counting
direction (up or down) must be the same both times. See figure 10.42.
Settings can be made in this way by detecting GRA3 compare match or TCNT4 underflow
before writing to the buffer register. They can also be made by using GRA3 compare match
to activate the DMAC.
H'0000
GRA3
H'FFFF
H'0000
GR
GR
BR
T – 1
T
TCNT4
Write during down-counting
0% duty cycle
TCNT3
Write during up-counting
Section 10 16-Bit Integrated Timer Unit (ITU)
Rev. 7.00 Sep 21, 2005 page 379 of 878
100% duty cycle
Illegal changes
REJ09B0259-0700