DF2357F20 Renesas Electronics America, DF2357F20 Datasheet - Page 263

• Manufacturer Part Number: DF2357F20
• Description: IC H8S MCU FLASH 5V 128K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2357F20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

7.5.15
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 the 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 7-36 shows the
procedure for continuing transfer when it has been interrupted by an NMI interrupt on a channel designated for burst mode
transfer.
Figure 7-36 Example of Procedure for Continuing Transfer on Channel Interrupted by NMI Interrupt
NMI Interrupts and DMAC
transfer on interrupted
Transfer continues
Set DTME bit to 1
Resumption of
DTME = 0
DTE = 1
channel
Yes
No
[1]
[2]
Transfer ends
[1]
[2]
Check that DTE = 1 and
DTME = 0 in DMABCRL
Write 1 to the DTME bit.
Rev.6.00 Oct.28.2004 page 233 of 1016
REJ09B0138-0600H