HD64F2676VFC33 Renesas Electronics America, HD64F2676VFC33 Datasheet - Page 335

• 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: -

7.3.6
The DMAC can activate the DTC with a transfer end interrupt, rewrite the channel on which the
transfer ended using a DTC chain transfer, and then reactivate the DTC. DMAWER applies
restrictions for changing all bits of DMACR, and specific bits for DMATCR and DMABCR for
the specific channel, to prevent inadvertent rewriting of registers other than those for the channel
concerned. The restrictions applied by DMAWER are valid for the DTC.
Figure 7.2 shows the transfer areas for activating the DTC with a channel 0A transfer end interrupt
request, and reactivating channel 0A. The address register and count register areas are set again
during the first DTC transfer, then the control register area is set again during the second DTC
Bit
7
to
4
3
2
1
0
Bit Name
WE1B
WE1A
WE0B
WE0A
DMA Write Enable Register (DMAWER)
Initial Value
All 0
0
0
0
0
R/W
—
R/W
R/W
R/W
R/W
Description
Reserved
These bits are always read as 0 and cannot be
modified.
Write Enable 1B
Enables or disables writes to all bits in
DMACR1B, bits 11, 7, and 3 in DMABCR, and
bit 5 in DMATCR.
0: Writes are disabled
1: Writes are enabled
Write Enable 1A
Enables or disables writes to all bits in
DMACR1A, and bits 10, 6, and 2 in DMABCR.
0: Writes are disabled
1: Writes are enabled
Write Enable 0B
Enables or disables writes to all bits in
DMACR0B, bits 9, 5, and 1 in DMABCR, and bit
4 in DMATCR.
0: Writes are disabled
1: Writes are enabled
Write Enable 0A
Enables or disables writes to all bits in
DMACR0A, and bits 8, 4, and 0 in DMABCR.
0: Writes are disabled
1: Writes are enabled
Rev. 3.00 Mar 17, 2006 page 283 of 926
Section 7 DMA Controller (DMAC)
REJ09B0283-0300