DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 277
DF3048BVX25V
Manufacturer Part Number
DF3048BVX25V
Description
MCU 3/5V 128K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3048BVX25V
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
70
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3048BVX25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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8.4.11
NMI interrupts do not affect DMAC operations in short address mode.
If an NMI interrupt occurs during a transfer in full address mode, the DMAC suspends operations.
In full address mode, a channel is enabled when its DTE and DTME bits are both set to 1. NMI
input clears the DTME bit to 0. After transferring the current byte or word, the DMAC releases the
bus to the CPU. In normal mode, the suspended transfer resumes when the CPU sets the DTME
bit to 1 again. Check that the DTE bit is set to 1 and the DTME bit is cleared to 0 before setting
the DTME bit to 1.
Figure 8.21 shows the procedure for resuming a DMA transfer in normal mode on channel 0 after
the transfer was halted by NMI input.
For information about NMI interrupts in block transfer mode, see section 8.6.6, NMI Interrupts
and Block Transfer Mode.
Figure 8.21 Procedure for Resuming a DMA Transfer Halted by NMI (Example)
Resuming DMA transfer
DMA transfer continues
NMI Interrupts and DMAC
in normal mode
Set DTME to 1
DTME = 0
Yes
DTE = 1
No
1
2
End
1.
2.
Rev. 3.00 Sep 27, 2006 page 249 of 872
Check that DTE = 1 and DTME = 0.
Read DTCRB while DTME = 0,
then write 1 in the DTME bit.
Section 8 DMA Controller
REJ09B0325-0300
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