DF2339VFC25V Renesas Electronics America, DF2339VFC25V Datasheet - Page 298

• Manufacturer Part Number: DF2339VFC25V
• Description: IC H8S/2300 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2339VFC25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 106
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 7 DMA Controller
7.5.9
Basic DMAC Bus Cycles
An example of the basic DMAC bus cycle timing is shown in figure 7.18. In this example, word-
size transfer is performed from 16-bit, 2-state access space to 8-bit, 3-state access space. When the
bus is transferred from the CPU to the DMAC, a source address read and destination address write
are performed. The bus is not released in response to another bus request, etc., between these read
and write operations. As with CPU cycles, DMA cycles conform to the bus controller settings.
CPU cycle
DMAC cycle (1-word transfer)
CPU cycle
T
T
T
T
T
T
T
T
1
2
1
2
3
1
2
3
φ
Source
Destination address
address
Address bus
RD
HWR
LWR
Figure 7.18 Example of DMA Transfer Bus Timing
The address is not output to the external address bus in an access to on-chip memory or an internal
I/O register.
Rev.4.00 Sep. 07, 2007 Page 266 of 1210
REJ09B0245-0400