DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 135
DS72030W200FPV
Manufacturer Part Number
DS72030W200FPV
Description
MPU, 32BIT, SH7203, ROMLESS, 240QFP
Manufacturer
Renesas Electronics America
Series
SH7200r
Datasheet
1.R5S72030W200FP.pdf
(1686 pages)
Specifications of DS72030W200FPV
Core Size
32bit
Program Memory Size
32KB
Cpu Speed
200MHz
Digital Ic Case Style
QFP
No. Of Pins
240
Supply Voltage Range
1.1V To 1.3V
Operating Temperature Range
-20°C To +85°C
Svhc
No SVHC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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3.5
3.5.1
FPU exceptions may be triggered by floating point operation instructions. The exception sources
are as follows:
• FPU error (E): When FPSCR.DN = 0 and a denormalized number is input (No error occurs in
• Invalid operation (V): In case of an invalid operation, such as NaN input
• Division by zero (Z): Division with a zero divisor
• Overflow (O): When the operation result overflows
• Underflow (U): When the operation result underflows
• Inexact exception (I): When overflow, underflow, or rounding occurs
The FPU exception cause field in FPSCR contains bits corresponding to all of above sources E, V,
Z, O, U, and I, and the FPU exception flag and enable fields in FPSCR contain bits corresponding
to sources V, Z, O, U, and I, but not E. Thus, FPU errors cannot be disabled.
When an FPU exception occurs, the corresponding bit in the FPU exception cause field is set to 1,
and 1 is added to the corresponding bit in the FPU exception flag field. When an FPU exception
does not occur, the corresponding bit in the FPU exception cause field is cleared to 0, but the
corresponding bit in the FPU exception flag field remains unchanged.
3.5.2
FPU exception handling is initiated in the following cases:
• FPU error (E): FPSCR.DN = 0 and a denormalized number is input (No error occurs in the
• Invalid operation (V): FPSCR.Enable.V = 1 and invalid operation
• Division by zero (Z): FPSCR.Enable.Z = 1 and division with a zero divisor
• Overflow (O): FPSCR.Enable.O = 1 and instruction with possibility of operation result
• Underflow (U): FPSCR.Enable.U = 1 and instruction with possibility of operation result
• Inexact exception (I): FPSCR.Enable.I = 1 and instruction with possibility of inexact operation
the SH2A-FPU)
SH2A-FPU)
overflow
underflow
result
FPU Exceptions
FPU Exception Sources
FPU Exception Handling
Rev. 3.00 Sep. 28, 2009 Page 103 of 1650
Section 3 Floating-Point Unit (FPU)
REJ09B0313-0300
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