R8A77850ANBGV Renesas Electronics America, R8A77850ANBGV Datasheet - Page 166

• Manufacturer Part Number: R8A77850ANBGV
• Description: IC SUPERH MPU ROMLESS 436-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77850ANBGV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 600MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 108
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1 V ~ 1.2 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 436-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

6. Floating-Point Unit (FPU)
Rev.1.00 Jan. 10, 2008 Page 134 of 1658
REJ09B0261-0100
Bit
17 to 12 Cause
11 to 7
6 to 2
1
0
Bit Name
Enable
Flag
RM1
RM0
Initial
Value
All 0
All 0
All 0
0
1
R/W
R/W
R/W
R/W
R/W
R/W
Description
FPU Exception Cause Field
FPU Exception Enable Field
FPU Exception Flag Field
Each time an FPU operation instruction is executed, the
FPU exception cause field is cleared to 0. When an
FPU exception occurs, the bits corresponding to FPU
exception cause field and flag field are set to 1. The
FPU exception flag field remains set to 1 until it is
cleared to 0 by software.
For bit allocations of each field, see table 6.3.
Rounding Mode
These bits select the rounding mode.
00: Round to Nearest
01: Round to Zero
10: Reserved
11: Reserved