DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 530

• 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

Section 15 Serial Communication Interface (SCI, IrDA)
The high-level pulse width is fixed at a minimum of 1.41 µs, and a maximum of (3/16 + 2.5%)
bit rate or (3/16
minimum high-level pulse width at 1.41 µs or above.
When the serial data is 1, no pulse is output.
Reception
In reception, IR frame data is converted to a UART frame by the IrDA interface, and input to the
SCI.
When a high-level pulse is detected, 0 data is output, and if there is no pulse during a one-bit
interval, 1 data is output. Note that a pulse shorter than the minimum pulse width of 1.41 µs will
be identified as a 0 signal.
Rev. 4.00 Sep 27, 2006 page 484 of 1130
REJ09B0327-0400
Transmission
Bit
interval
Start
Start
bit rate) + 1.08 µs. When system clock is 20 MHz, 1.6 µs can be set as the
bit
bit
0
0
Figure 15.22 IrDA Transmit/Receive Operations
1
1
0
0
UART frame
IR frame
1
1
0
0
Data
Data
0
0
1
1
Reception
Pulse width is 1.6 µs
to 3/16 bit interval
1
1
0
0
Stop
Stop
bit
bit
1
1