DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 525

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• 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: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

Serial Data Reception (Synchronous Mode): Figure 15.18 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 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.
Serial clock
Serial data
TDRE
TEND
TXI interrupt
request generated
Figure 15.17 Example of SCI Operation in Transmission
Bit 0
Data written to TDR
and TDRE flag
cleared to 0 in TXI
interrupt handling routine
Transfer direction
Bit 1
1 frame
Section 15 Serial Communication Interface (SCI, IrDA)
TXI interrupt
request generated
Bit 7
Bit 0
Rev. 4.00 Sep 27, 2006 page 479 of 1130
Bit 1
Bit 6
REJ09B0327-0400
TEI interrupt
request generated
Bit 7