DF2345TE20 Renesas Electronics America, DF2345TE20 Datasheet - Page 492

• Manufacturer Part Number: DF2345TE20
• Description: MCU 5V 128K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2345TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 71
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2345TE20; HD64F2345TE20

Section 12 Serial Communication Interface (SCI)
Figure 12.17 shows an example of SCI operation in transmission.
Serial data reception (clocked synchronous mode): Figure 12.18 shows a sample flowchart for
serial reception.
The following procedure should be used for serial data reception.
When changing the operating mode from asynchronous to clocked synchronous, be sure to check
that the ORER, PER, and FER flags are all cleared to 0.
The RDRF flag will not be set if the FER or PER flag is set to 1, and neither transmit nor receive
operations will be possible.
Rev. 4.00 Feb 15, 2006 page 466 of 900
REJ09B0291-0400
Serial clock
Serial data
TDRE
TEND
TXI interrupt
request generated
Figure 12.17 Example of SCI Operation in Transmission
interrupt service routine
Data written to TDR
cleared to 0 in TXI
Bit 7
and TDRE flag
Transfer direction
Bit 0
1 frame
TXI interrupt
request generated
Bit 7
Bit 0
Bit 1
Bit 6
TEI interrupt
request generated
Bit 7