DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 476

• 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)
15.2.5
SMR is an 8-bit register used to set the SCI’s serial transfer format and select the baud rate
generator clock source.
SMR can be read or written to by the CPU at all times.
SMR is initialized to H'00 by a reset, and in standby mode, watch mode, subactive mode, subsleep
mode, and module stop mode.
Bit 7—Communication Mode (C/A A A A ): Selects asynchronous mode or synchronous mode as the
SCI operating mode.
Bit 7
C/A A A A
0
1
Bit 6—Character Length (CHR): Selects 7 or 8 bits as the data length in asynchronous mode. In
synchronous mode, a fixed data length of 8 bits is used regardless of the CHR setting.
Bit 6
CHR
0
1
Note:
Rev. 4.00 Sep 27, 2006 page 430 of 1130
REJ09B0327-0400
Bit
Initial value
Read/Write
* When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted, and LSB-
Serial Mode Register (SMR)
first/MSB-first selection is not available.
Description
Asynchronous mode
Synchronous mode
Description
8-bit data
7-bit data *
R/W
C/A
7
0
CHR
R/W
6
0
R/W
PE
5
0
R/W
O/E
4
0
STOP
R/W
3
0
R/W
MP
2
0
CKS1
R/W
1
0
(Initial value)
(Initial value)
CKS0
R/W
0
0