HD64F2676VFC33 Renesas Electronics America, HD64F2676VFC33 Datasheet - Page 361
HD64F2676VFC33
Manufacturer Part Number
HD64F2676VFC33
Description
IC H8S MCU FLASH 256K 144-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2676VFC33
Core Processor
H8S/2600
Core Size
16-Bit
Speed
33MHz
Connectivity
IrDA, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
103
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K 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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 7 DMA Controller (DMAC)
7.5.8
Basic Bus Cycles
An example of the basic DMAC bus cycle timing is shown in figure 7.17. 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 like CPU cycles, DMA cycles conform to the bus controller settings.
The address is not output to the external address bus in an access to on-chip memory or an internal
I/O register.
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
Source
Destination address
address
Address bus
RD
HWR
LWR
Figure 7.17 Example of DMA Transfer Bus Timing
Rev. 3.00 Mar 17, 2006 page 309 of 926
REJ09B0283-0300
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