DF2328BVF25V Renesas Electronics America, DF2328BVF25V Datasheet - Page 316

• Manufacturer Part Number: DF2328BVF25V
• Description: IC H8S MCU FLASH 256K 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2328BVF25V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• 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): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• For Use With: EDK2329 - DEV EVALUATION KIT H8S/2329
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: HD64F2328BVF25V

Section 7 DMA Controller (Not Supported in the H8S/2321)
Full Address Mode (Cycle Steal Mode): Figure 7.20 shows a transfer example in which TEND
output is enabled and word-size full address mode transfer (cycle steal mode) is performed from
external 16-bit, 2-state access space to external 16-bit, 2-state access space.
A one-byte or one-word transfer is performed, and after the transfer the bus is released. While the
bus is released one bus cycle is executed 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.
Rev.6.00 Sep. 27, 2007 Page 284 of 1268
REJ09B0220-0600
Address bus
TEND
HWR
LWR
RD
φ
Bus release
Figure 7.20 Example of Full Address Mode (Cycle Steal) Transfer
DMA
read
DMA
write
Bus release
DMA
read
DMA
write
Bus release
DMA
read
Last transfer
cycle
DMA
write
DMA
dead
Bus
release