HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 267

• 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

Figure 8.15 shows an auto-requested burst-mode transfer. This example shows a transfer of three
words from a 16-bit two-state access area to another 16-bit two-state access area.
When the DMAC is activated from a DREQ pin there is a minimum interval of four states from
when the transfer is requested until the DMAC starts operating. The DREQ pin is not sampled
during the time between the transfer request and the start of the transfer. In short address mode and
normal mode, the pin is next sampled at the end of the read cycle. In block transfer mode, the pin
is next sampled at the end of one block transfer.
Address
bus
RD
HWR
LWR
,
CPU cycle
T
1
T
2
Figure 8.15 Bus Timing of Burst Mode DMA Transfer
T
d
T
1
Source
address
T
2
T
Destination
address
1
T
2
T
DMAC cycle
1
T
2
Rev. 7.00 Sep 21, 2005 page 241 of 878
T
1
T
2
T
1
Section 8 DMA Controller
T
2
T
1
REJ09B0259-0700
T
2
T
CPU cycle
1
T
2