DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 248

• 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

7.5.10
Short Address Mode: Figure 7-19 shows a transfer example in which TEND output is enabled and byte-size short
address mode transfer (sequential/idle/repeat mode) is performed from external 8-bit, 2-state access space to internal I/O
space.
A one-byte or one-word transfer is performed for one transfer request, and after the transfer the bus is released. While the
bus is released one or more bus cycles are inserted by the CPU or DTC.
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.
In repeat mode, when TEND output is enabled, TEND output goes low in the transfer cycle in which the transfer counter
reaches 0.
Rev.6.00 Oct.28.2004 page 218 of 1016
REJ09B0138-0600H
DMAC Bus Cycles (Dual Address Mode)
Address bus
TEND
HWR
LWR
RD
ø
Bus release
Figure 7-19 Example of Short Address Mode Transfer
DMA
read
DMA
write
Bus release
DMA
read
DMA
write
Bus release
DMA
read
Last transfer cycle
DMA
write
DMA
dead
Bus
release