HD6417727F100V Renesas Electronics America, HD6417727F100V Datasheet - Page 592

• Manufacturer Part Number: HD6417727F100V
• Description: MPU 3V 16K PB-FREE 240-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100V

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 17 Serial Communication Interface (SCI)
Serial Data Reception (Clock Synchronous Mode):
Figure 17.21 shows a sample flow chart for serial data reception. After enabling the SCI
transmission, transmit serial data following the procedure shown below:
When switching from the asynchronous mode to the clock synchronous mode, make sure that
ORER, PER, and FER are cleared to 0. If PER or FER is set to 1, the RDRF bit will not be set and
both transmitting and receiving will be disabled.
Rev.6.00 Mar. 27, 2009 Page 534 of 1036
REJ09B0254-0600
No
No
Read receive data in SCRDR and
clear RDRF bit in SCSSR to 0
Clear RE bit in SCSCR to 0
Read ORER bit in SCSSR
Read RDRF bit in SCSSR
All data received?
Start reception
End reception
ORER = 1?
RDRF = 1?
Figure 17.21 Sample Serial Reception Flowchart (1)
No
Yes
Yes
Error processing
Yes
(2)
(3)
(1)
(1) Receive error processing:
(2) SCI status check and receive
(3) To continue receiving serial
If a receive error occurs, read
the ORER bit in SCSSR to
identify the error. After
executing the necessary error
processing, clear ORER to 0.
Transmitting/receiving cannot
resume if ORER remains set
to 1.
data read:
Read the serial status register
(SCSSR), check that RDRF is
set to 1, then read receive
data from the receive data
register (SCRDR) and clear
RDRF to 0. The RXI interrupt
can also be used to determine
if the RDRF bit has changed
from 0 to 1.
data:
Read SCRDR, and clear
RDRF to 0 before the frame
MSB (bit 7) of the current
frame is received.