HD64F2676VFC33 Renesas Electronics America, HD64F2676VFC33 Datasheet - Page 446
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 8 EXDMA Controller
In block transfer mode, operation is aborted even in the middle of a block-size transfer. As the
transfer is halted midway through a block, the BEF bit in EDMDR is set to 1 to indicate that the
block transfer was not carried out normally.
When transfer is aborted, register values are retained, and as the address registers indicate the next
transfer addresses, transfer can be resumed by setting the EDA bit to 1 in EDMDR. If the BEF bit
is 1 in EDMDR, transfer can be resumed from midway through a block.
Hardware Standby Mode and Reset Input: The EXDMAC is initialized in hardware standby
mode and by a reset. DMA transfer is not guaranteed in these cases.
8.4.13
Relationship between EXDMAC and Other Bus Masters
The read and write operations in a DMA transfer cycle are indivisible, and a refresh cycle, external
bus release cycle, or internal bus mastership (CPU, DTC, or DMAC) external space access cycle
never occurs between the two.
When read and write cycles occur consecutively, as in burst transfer or block transfer, a refresh or
external bus release state may be inserted after the write cycle. As the internal bus masters are of
lower priority than the EXDMAC, external space accesses by internal bus masters are not
executed until the EXDMAC releases the bus.
The EXDMAC releases the bus in the following cases:
1. When DMA transfer is performed in cycle steal mode
2. When switching to a different channel
3. When transfer ends in burst transfer mode
4. When transfer of one block ends in block transfer mode
5. When burst transfer or block transfer is performed with the BGUP bit in EDMDR set to 1
(however, the bus is not released between read and write cycles)
Rev. 3.00 Mar 17, 2006 page 394 of 926
REJ09B0283-0300
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