R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 1240

• Manufacturer Part Number: R5S77631Y266BGV
• Description: IC SUPERH MPU ROMLESS 499BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R5S77631Y266BGV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 266MHz
• Connectivity: Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 107
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 499-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 28 Serial Communication Interface with FIFO/IrDA Interface (SCIF/IrDA)
(4)
Figure 28.14 shows a sample flowchart for serial transmission.
Use the following procedure for serial data transmission after enabling the SCIF for transmission.
Rev. 2.00 May 22, 2009 Page 1170 of 1982
REJ09B0256-0200
Note: In clock synchronous mode, when transmit data is written to the SCFTDR by the DMAC,
Serial Data Transmission (Clocked Synchronous Mode)
the TEND flag may no be cleared. Therefore, if the DMAC is used for transmission in
clock synchronous mode, read the TEND flag in the following method.
1. Confirm data transfer completion on the DMAC side.
2. Read the TEND flag.
3. Clear the TEND flag to 0 when TEND = 1.
4. Read the TEND flag again.
5. Use the TEND flag read for the second time.
Write transmit data to SCFTDR
Read TEND flag in SCFSR
Clear TE bit in SCSCR to 0
Read TDFE flag in SCFSR
TEND flag in SCFSR to 0
and clear TDFE flag and
Start of transmission
All data transmitted?
End of transmission
Initialization
TDFE = 1?
TEND = 1?
Figure 28.14 Sample Serial Transmission Flowchart
Yes
Yes
Yes
No
No
No
[1]
[2]
[3]
[1] SCIF initialization:
[2] SCIF status check and transmit data write:
[3] Serial transmission continuation procedeure:
See sample SCIF initialization flowchart in figure 28.13.
Read SCFSR and check that the TDFE flag is set to 1,
then write transmit data to SCFTDR, and clear
the TDFE flag to 0.
To continue serial transmission, read 1 from the TDFE
flag to confirm that writing is possible, them write data
to SCFTDR, and then clear the TDFE flag to 0.