R5F61668MZN50FPV Renesas Electronics America, R5F61668MZN50FPV Datasheet - Page 451

• Manufacturer Part Number: R5F61668MZN50FPV
• Description: MCU FLASH 1024K ROM 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61668MZN50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

10.5.9
Figure 10.23 shows an examples of signal timing of a basic bus cycle. In figure 10.23, data is
transferred in words from the 16-bit 2-state access space to the 8-bit 3-state access space. When
the bus mastership is passed from the DMAC to the CPU, data is read from the source address and
it is written to the destination address. The bus is not released between the read and write cycles
by other bus requests. DMAC bus cycles follows the bus controller settings.
Bφ
Address bus
RD
LHWR
LLWR
DMA Basic Bus Cycle
High
CPU cycle
Figure 10.23 Example of Bus Timing of DMA Transfer
Source address
T
1
T
2
T
1
DMAC cycle (one word transfer)
T
2
Destination address
T
3
Rev. 1.00 Jan. 29, 2010 Page 419 of 1380
T
1
Section 10 DMA Controller (DMAC)
T
2
T
3
REJ09B0596-0100
CPU cycle