DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 536

• 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)
Restrictions on Use of DTC
Rev. 4.00 Sep 27, 2006 page 490 of 1130
REJ09B0327-0400
When an external clock source is used as the serial clock, the transmit clock should not be
input until at least 5 clock cycles after TDR is updated by the DTC. Misoperation may occur
if the transmit clock is input within 4 clock cycles after TDR is updated. (Figure 15.24)
When RDR is read by the DTC, be sure to set the activation source to the relevant SCI receive-
data-full interrupt (RXI).
SCK
TDRE
Serial data
Note: When operating on an external clock, set t > 4 states.
Figure 15.24 Example of Synchronous Transmission by DTC
t
LSB
D0
D1
D2
D3
D4
D5
D6
D7