DF70844AD80FPV Renesas Electronics America, DF70844AD80FPV Datasheet - Page 842

• Manufacturer Part Number: DF70844AD80FPV
• Description: IC SUPERH MCU FLASH 112LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7080r

Specifications of DF70844AD80FPV

• Core Size: 32-Bit
• Program Memory Size: 256KB (256K x 8)
• Core Processor: SH-2
• Speed: 80MHz
• Connectivity: EBI/EMI, FIFO, I²C, SCI, SSU
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• No. Of I/o's: 76
• Ram Memory Size: 16KB
• Cpu Speed: 80MHz
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 3V To 3.6V, 4.5V To 5.5V
• Embedded Interface Type: I2C, SCI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: R0K570865S001BE - KIT STARTER FOR SH7086R0K570865S000BE - KIT STARTER FOR SH7086HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Section 15 Serial Communication Interface (SCI)
15.7
15.7.1
The TDRE flag in the serial status register (SCSSR) is a status flag indicating transferring of
transmit data from SCTDR into SCTSR. The SCI sets the TDRE flag to 1 when it transfers data
from SCTDR to SCTSR.
Data can be written to SCTDR regardless of the TDRE bit status.
If new data is written in SCTDR when TDRE is 0, however, the old data stored in SCTDR will be
lost because the data has not yet been transferred to SCTSR. Before writing transmit data to
SCTDR, be sure to check that the TDRE flag is set to 1.
15.7.2
If multiple receive errors occur at the same time, the status flags in SCSSR are set as shown in
table 15.18. When an overrun error occurs, data is not transferred from the receive shift register
(SCRSR) to the receive data register (SCRDR) and the received data will be lost.
Table 15.18 SCSSR Status Flag Values and Transfer of Received Data
Rev. 3.00 May 17, 2007 Page 784 of 1582
REJ09B0181-0300
Receive Errors Generated
Overrun error
Framing error
Parity error
Overrun error + framing error
Overrun error + parity error
Framing error + parity error
Overrun error + framing error + parity error
Usage Notes
SCTDR Writing and TDRE Flag
Multiple Receive Error Occurrence
RDRF
1
0
0
1
1
0
1
SCSSR Status Flags
ORER
1
0
0
1
1
0
1
0
1
0
1
0
1
1
FER
PER
0
0
1
0
1
1
1
Receive Data
Transfer from
SCRSR to
SCRDR
Not transferred
Transferred
Transferred
Not transferred
Not transferred
Transferred
Not transferred