DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 479

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Transmitting Serial Data (Clock Synchronous Mode): Figure 12.10 shows a sample flowchart
for transmitting serial data.
Use the following procedure for serial data transmission after enabling the SCI for transmission.
Write transmit data to SCTDR
Read TDRE flag in SCSSR
Read TEND flag in SCSSR
Clear TE bit in SCSCR to 0
Figure 12.10 Sample Flowchart for Transmitting Serial Data
and clear TDRE flag
Start of transmission
All data transmitted?
End of transmission
in SCSSR to 0
TDRE = 1?
TEND = 1?
Yes
Yes
Yes
No
No
No
[1] SCI status check and transmit data
[2] Serial transmission continuation
write:
TDRE flag is set to 1, then write
transmit data to SCTDR, and clear
the TDRE flag to 0.
procedure:
1 from the TDRE flag to confirm that
writing is possible, then write data to
SCTDR, and then clear the TDRE
flag to 0.
Read SCSSR and check that the
To continue serial transmission, read
Rev. 5.00 Mar. 06, 2009 Page 459 of 770
REJ09B0243-0500