HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 737

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Serial Data Transmission (Asynchronous Mode): Figure 15.8 shows a sample flowchart for
serial transmission.
Use the following procedure for serial data transmission after enabling the SCI for transmission.
Set TE and RE bits in SCSCR1
to 1, and set RIE, TIE, TEIE,
in SCSCR1 (leaving TE and
Set CKE1 and CKE0 bits
Set data transfer format
1-bit interval elapsed?
Set value in SCBRR1
Clear TE and RE bits
RE bits cleared to 0)
in SCSCR1 to 0
and MPIE bits
Initialization
in SCSMR1
End
Yes
Figure 15.7 Sample SCI Initialization Flowchart
Wait
No
1. Set the clock selection in SCSCR1.
2. Set the data transfer format in
3. Write a value corresponding to the
4. Wait at least one bit interval, then set
Rev.4.00 Oct. 10, 2008 Page 637 of 1122
15. Serial Communication Interface (SCI)
Be sure to clear bits RIE, TIE, TEIE,
and MPIE, and bits TE and RE, to 0.
When clock output is selected in
asynchronous mode, it is output
immediately after SCSCR1 settings
are made.
SCSMR1.
bit rate into SCBRR1. (Not
necessary if an external clock is
used.)
the TE bit or RE bit in SCSCR1 to 1.
Also set the RIE, TIE, TEIE, and
MPIE bits.
Setting the TE and RE bits enables
the TxD and RxD pins to be used.
When transmitting, the SCI will go to
the mark state; when receiving, it will
go to the idle state, waiting for a start
bit.
REJ09B0370-0400