HD6417709SF133B Renesas Electronics America, HD6417709SF133B Datasheet - Page 582

• Manufacturer Part Number: HD6417709SF133B
• Description: IC SUPERH MPU ROMLESS 208LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417709SF133B

• Core Processor: SH-3
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: EBI/EMI, FIFO, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 96
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 2.05 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

16.2.10 FIFO Data Count Register (SCFDR)
SCFDR is a 16-bit register which indicates the quantity of data stored in the transmit FIFO data
register (SCFTDR) and the receive FIFO data register (SCFRDR). It indicates the quantity of
transmit data in SCFTDR with the upper 8 bits, and the quantity of receive data in SCFRDR with
the lower 8 bits. SCFDR can always be read by the CPU.
The upper 8 bits of SCFDR indicate the quantity of non-transmitted data stored in SCFTDR. H'00
means no transmit data, and H'10 means that SCFTDR is full of transmit data.
The lower 8 bits of SCFDR indicate the quantity of receive data stored in SCFRDR. H'00 means
no receive data, and H'10 means that SCFRDR full of receive data.
Rev. 5.00, 09/03, page 536 of 760
Upper 8 Bits:
Lower 8 Bits:
Initial value:
Initial value:
R/W:
R/W:
15
—
—
R
R
0
7
0
14
—
—
R
R
0
6
0
13
—
—
R
R
0
5
0
R4
12
T4
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
R0
T0
R
R
8
0
0
0