HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 258

• Manufacturer Part Number: HD6413007F20
• Description: IC H8 MCU ROMLESS 5V 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD6413007F20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 35
• Program Memory Type: ROMless
• 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-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

7. DMA Controller
Figure 7.14 shows the timing when the DMAC is activated by low input at a DREQ pin. This
example shows a word-size transfer from a 16-bit two-state access area to another 16-bit two-state
access area. The DMAC continues the transfer while the DREQ pin is held low.
Rev.5.00 Sep. 12, 2007 Page 228 of 764
REJ09B0396-0500
φ
DREQ
Address
bus
RD
HWR
TEND
φ
Address
bus
RD
HWR
LWR
,
Figure 7.14 Bus Timing of DMA Transfer Requested by Low DREQ Input
LWR
T
T
1
1
CPU cycle
CPU cycle
T
T
Figure 7.13 DMA Transfer Bus Timing (Example)
2
2
T
T
1
3
T
T
2
d
T
T
d
1
DMAC cycle
Source
address
T
T
Source
address
1
2
DMAC cycle (1 word transfer)
T
T
Destination
address
2
1
T
T
1
2
T
Destination address
T
CPU cycle
2
1
T
T
3
2
T
T
1
d
DMAC cycle
(last transfer cycle)
T
T
2
1
Source
address
T
T
3
2
T
T
Destination
address
1
1
T
CPU cycle
T
2
2
T
T
CPU cycle
1
1
T
T
2
2