R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 120

• Manufacturer Part Number: R5S77631Y266BGV
• Description: IC SUPERH MPU ROMLESS 499BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R5S77631Y266BGV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 266MHz
• Connectivity: Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 107
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 499-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 2 Programming Model
Table 2.2
(5)
Information is transferred between the FPU and CPU via FPUL.
Rev. 2.00 May 22, 2009 Page 50 of 1982
REJ09B0256-0200
Field Name
Cause
Enable
Flag
Floating-Point Communication Register (FPUL) (32 bits, Initial Value = Undefined)
<Little endian>
<Big endian>
Floating-point register
Floating-point register
FPU exception
cause field
FPU exception
enable field
FPU exception flag
field
Bit Allocation for FPU Exception Handling
Memory area
Memory area
Figure 2.5 Relationship between SZ bit and Endian
Notes: 1. In the case of SZ = 0 and PR = 0, DR register can not be used.
8n
4n+3
63
63
63
63
63
63
2. The bit-location of DR register is used for double precision format when PR = 1.
FR (2i)
FR (2i)
(In the case of (2), it is used when PR is changed from 0 to 1.)
FPU
Error (E)
Bit 17
None
None
8n+3
(1) SZ = 0
DR (2i)
32 31
DR (2i)
4n
32 31
4m+3
8n+4
FR (2i+1)
FR (2i+1)
Invalid
Operation (V)
Bit 16
Bit 11
Bit 6
8n+7
*1, *2
4m
0
0
0
0
0
0
8n+3
63
63
63
FR (2i)
(2) SZ = 1, PR = 0
Division
by Zero (Z)
Bit 15
Bit 10
Bit 5
DR (2i)
8n
32 31
8n+7
FR (2i+1)
8n+4
*2
0
0
0
Overflow
(O)
Bit 14
Bit 9
Bit 4
8n+7
63
63
63
FR (2i)
(3) SZ = 1, PR = 1
8n+4
Underflow
(U)
Bit 13
Bit 8
Bit 3
DR (2i)
32 31
8n+3
FR (2i+1)
8n
0
0
0
Inexact
(I)
Bit 12
Bit 7
Bit 2