HD6417706F133 Renesas Electronics America, HD6417706F133 Datasheet - Page 446

• Manufacturer Part Number: HD6417706F133
• Description: IC SUPERH MPU ROMLESS 176LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417706F133

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 103
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.75 V ~ 2.05 V
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 176-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 14 Serial Communication Interface (SCI)
Transmitting Serial Data (Asynchronous Mode): Figure 14.8 shows a sample flowchart for
transmitting serial data. Serial data transmission should be carried out in the following procedure
after setting the SCI in a transmission-enabled state.
Rev. 5.00 May 29, 2006 page 396 of 698
REJ09B0146-0500
SCTDR and clear TDRE bit in
Read TDRE bit in SCSSR
Write transmission data to
Read TEND bit in SCSSR
Set SCPDR and SCPCR
Clear TE bit SCSCR to 0
Figure 14.8 Sample Flowchart for Transmitting Serial Data
All data transmitted?
Start transmission
End transmission
Break output?
SCSSR to 0
TEND = 1?
TDRE = 1?
Yes
Yes
Yes
Yes
No
No
No
No
1.
2.
3.
SCI status check and transmit data write:
Read the serial status register (SCSSR),
check that the TDRE bit is 1, then write
transmit data in the SCTDR and clear
TDRE to 0.
To continue transmitting serial data:
Read the TDRE bit to check whether it is
safe to write (if it reads 1); if so, write data
in SCTDR, then clear TDRE to 0.
To output a break at the end of serial
transmission: Set the SCPCR and
SCPDR, then clear the TE bit to 0 in SCSCR.
For SCPCR and SCPDR settings, see14.3.8,
SC Port Control Register (SCPCR),
and 14.3.9, SC Port Data Register (SCPDR).