HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 792

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

16. Serial Communication Interface with FIFO (SCIF)
Bit 0—Loopback Test (LOOP): Internally connects the transmit output pin (TxD2) and receive
input pin (RxD2), and the RTS2 pin and CTS2 pin, enabling loopback testing.
Bit 0: LOOP
0
1
16.2.10 FIFO Data Count Register (SCFDR2)
SCFDR2 is a 16-bit register that indicates the number of data bytes stored in SCFTDR2 and
SCFRDR2.
The upper 8 bits show the number of transmit data bytes in SCFTDR2, and the lower 8 bits show
the number of receive data bytes in SCFRDR2.
SCFDR2 can be read by the CPU at all times.
These bits show the number of untransmitted data bytes in SCFTDR2. A value of H'00 indicates
that there is no transmit data, and a value of H'10 indicates that SCFTDR2 is full of transmit data.
These bits show the number of receive data bytes in SCFRDR2. A value of H'00 indicates that
there is no receive data, and a value of H'10 indicates that SCFRDR2 is full of receive data.
Rev.4.00 Oct. 10, 2008 Page 692 of 1122
REJ09B0370-0400
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
15
—
—
R
R
0
7
0
Description
Loopback test disabled
Loopback test enabled
14
—
—
R
R
0
6
0
13
—
—
R
R
0
5
0
R4
T4
12
R
R
0
4
0
R3
T3
11
R
R
0
3
0
R2
10
T2
R
R
0
2
0
R1
T1
R
R
9
0
1
0
(Initial value)
R0
T0
R
R
8
0
0
0