DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 499

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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 SMR
as shown in table 15.8. The SCI clock is determined by a combination of the C/A bit in SMR and
the CKE1 and CKE0 bits in SCR, 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
combination of these parameters determines the transfer format and character length)
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
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 built-in 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 built-in baud rate generator is not used, and the SCI operates on the input serial clock
Operation
Overview
Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 4.00 Sep 27, 2006 page 453 of 1130
REJ09B0327-0400