HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 731

• 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: -

15.3
15.3.1
The SCI can carry out serial communication in two modes: asynchronous mode in which
synchronization is achieved character by character, and synchronous mode in which
synchronization is achieved with clock pulses.
Selection of asynchronous or synchronous mode and the transmission format is made using
SCSMR1 as shown in table 15.8. The SCI clock source is determined by a combination of the C/A
bit in SCSMR1 and the CKE1 and CKE0 bits in SCSCR1, as shown in table 15.9.
• Asynchronous mode
• Synchronous mode
⎯ Data length: Choice of 7 or 8 bits
⎯ Choice of parity addition, multiprocessor bit addition, and addition of 1 or 2 stop bits (the
⎯ Detection of framing, parity, and overrun errors, and breaks, during reception
⎯ Choice of internal or external clock as SCI clock source
⎯ Transfer format: Fixed 8-bit data
⎯ Detection of overrun errors during reception
⎯ Choice of internal or external clock as SCI clock source
combination of these parameters determines the transfer format and character length)
When internal clock is selected: The SCI operates on the baud rate generator clock and a
clock with the same frequency as the bit rate can be output.
When external clock is selected: A clock with a frequency of 16 times the bit rate must be
input (the on-chip baud rate generator is not used).
When internal clock is selected: The SCI operates on the baud rate generator clock and a
serial clock is output off-chip.
When external clock is selected: The on-chip baud rate generator is not used, and the SCI
operates on the input serial clock.
Operation
Overview
Rev.4.00 Oct. 10, 2008 Page 631 of 1122
15. Serial Communication Interface (SCI)
REJ09B0370-0400