DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 250

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• 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: 256KB (256K 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: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

Full Address Mode (Burst Mode): Figure 7-21 shows a transfer example in which TEND output is enabled and word-
size full address mode transfer (burst mode) is performed from external 16-bit, 2-state access space to external 16-bit, 2-
state access space.
In burst mode, one-byte or one-word transfers are executed consecutively until transfer ends.
In the transfer end cycle (the cycle in which the transfer counter reaches 0), a one-state DMA dead cycle is inserted after
the DMA write cycle.
If a request from another higher-priority channel is generated after burst transfer starts, that channel has to wait until the
burst transfer ends.
If an NMI is generated while a channel designated for burst transfer is in the transfer enabled state, the DTME bit is
cleared and the channel is placed in the transfer disabled state. If burst transfer has already been activated inside the
DMAC, the bus is released on completion of a one-byte or one-word transfer within the burst transfer, and burst transfer is
suspended. If the last transfer cycle of the burst transfer has already been activated inside the DMAC, execution continues
to the end of the transfer even if the DTME bit is cleared.
Rev.6.00 Oct.28.2004 page 220 of 1016
REJ09B0138-0600H
Address bus
TEND
HWR
Bus release
LWR
RD
ø
Figure 7-21 Example of Full Address Mode (Burst Mode) Transfer
DMA
read
DMA
write
DMA
read
Burst transfer
DMA
write
DMA
read
Last transfer cycle
DMA
write
DMA
dead
Bus release