HD6417020SX20IV Renesas Electronics America, HD6417020SX20IV Datasheet - Page 226

• Manufacturer Part Number: HD6417020SX20IV
• Description: SH 1 CORE 32B MPU, 20MHZ/5V, 100
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7020r

Specifications of HD6417020SX20IV

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

9.4.2
In this example, receive data of on-chip serial communications interface (SCI) channel 0 is
transferred to external memory using DMAC channel 3. Table 9.8 shows the transfer conditions
and register settings.
Table 9.8
Transfer Conditions
Transfer source: RDR0 of on-chip SCI0
Transfer destination: external memory
Number of transfers: 64
Transfer destination address: incremented
Transfer source address: fixed
Transfer request source (transfer request signal): SCI0 (RXI0)
Bus mode: cycle steal
Transfer unit: byte
DEI interrupt request generated at end of transfer (channel 3
enabled for transfer
Channel priority order: fixed (0 > 3 > 2 > 1) (all channels
transfer enabled)
Example of DMA Transfer between On-Chip SCI and External Memory
Transfer Conditions and Register Settings for Transfer between On-Chip SCI
and External Memory
Register
SAR3
DAR3
TCR3
CHCR3
DMAOR
Setting
H'FFFFEC5
Destination address
H'0040
H'4405
H'0001
RENESAS 207