DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 422

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 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: HD64F2148BTE20; HD64F2148BTE20

Section 15 Serial Communication Interface (SCI and IrDA)
15.3.7
SSR is a register containing status flags of the SCI and multiprocessor bits for transfer. TDRE,
RDRF, ORER, PER, and FER can only be cleared.
Bit
7
6
5
Rev. 3.00 Mar 21, 2006 page 366 of 788
REJ09B0300-0300
Bit Name
TDRE
RDRF
ORER
Serial Status Register (SSR)
Initial Value
1
0
0
R/W
R/(W) *
R/(W) *
R/(W) *
Description
Transmit Data Register Empty
Indicates whether TDR contains transmit data.
[Setting conditions]
[Clearing conditions]
Receive Data Register Full
Indicates that receive data is stored in RDR.
[Setting condition]
When serial reception ends normally and receive
data is transferred from RSR to RDR
[Clearing conditions]
The RDRF flag is not affected and retains its
previous value when the RE bit in SCR is cleared to
0.
Overrun Error
[Setting condition]
When the next data is received while RDRF = 1
[Clearing condition]
When 0 is written to ORER after reading
ORER = 1
When the TE bit in SCR is 0
When data is transferred from TDR to TSR and
TDR is ready for data write
When 0 is written to TDRE after reading
TDRE = 1
When a TXI interrupt request is issued allowing
the DTC to write data to TDR
RDRF = 1
When an RXI interrupt request is issued allowing
the DTC to read data from RDR
When 0 is written to RDRF after reading