HD64F2676VFC33 Renesas Electronics America, HD64F2676VFC33 Datasheet - Page 379
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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7.5.14
When an NMI interrupt is requested, burst mode transfer in full address mode is interrupted. An
NMI interrupt does not affect the operation of the DMAC in other modes.
In full address mode, transfer is enabled for a channel when both the DTE bit and DTME bit are
set to 1. With burst mode setting, the DTME bit is cleared when an NMI interrupt is requested.
If the DTME bit is cleared during burst mode transfer, the DMAC discontinues transfer on
completion of the 1-byte or 1-word transfer in progress, then releases the bus, which passes to the
CPU.
The channel on which transfer was interrupted can be restarted by setting the DTME bit to 1 again.
Figure 7.35 shows the procedure for continuing transfer when it has been interrupted by an NMI
interrupt on a channel designated for burst mode transfer.
7.5.15
If the DTE bit in DMABCRL is cleared to 0 for the channel currently operating, the DMAC stops
on completion of the 1-byte or 1-word transfer in progress. DMAC operation resumes when the
DTE bit is set to 1 again. In full address mode, the same applies to the DTME bit in DMABCRL.
Figure 7.36 shows the procedure for forcibly terminating DMAC operation by software.
Figure 7.35 Example of Procedure for Continuing Transfer on Channel Interrupted
Forced Termination of DMAC Operation
DMAC and NMI Interrupts
transfer on interrupted
Transfer continues
Set DTME bit to 1
Resumption of
DTME = 0
DTE = 1
channel
Yes
No
[1]
[2]
by NMI Interrupt
Transfer ends
Rev. 3.00 Mar 17, 2006 page 327 of 926
Section 7 DMA Controller (DMAC)
[1]
[2]
Check that DTE = 1 and
DTME = 0 in DMABCRL.
Write 1 to the DTME bit.
REJ09B0283-0300
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