HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 265
HD6413007F20
Manufacturer Part Number
HD6413007F20
Description
IC H8 MCU ROMLESS 5V 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheet
1.D13007F20V.pdf
(798 pages)
Specifications of HD6413007F20
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
35
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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Price
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7.4.11
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 7.21 shows the procedure for resuming a DMAC 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 7.6.6, NMI Interrupts
and Block Transfer Mode.
Figure 7.21 Procedure for Resuming a DMAC Transfer Halted by NMI (Example)
Resuming DMAC 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.5.00 Sep. 12, 2007 Page 235 of 764
Check that DTE = 1 and DTME = 0.
Read DTCRB while DTME = 0,
then write 1 in the DTME bit.
7. DMA Controller
REJ09B0396-0500
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