HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 294

• Manufacturer Part Number: HD6417720BP133BV
• Description: SH3-DSP, WITH USB AND LCDC, PB-F
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417720BP133BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: FIFO, I²C, IrDA, MMC, SCI, SD, SIO, SIM, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 117
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 7 Exception Handling
7.4
When the DSP extension function is valid (the DSP bit in SR is set to 1), some exception
processing acceptance conditions or exception processing may be changed.
7.4.1
In the DSP mode, a DSP extension instruction can be executed. If a DSP extension instruction is
executed when the DSP bit in SR is cleared to 0 (in a mode other than the DSP mode), an illegal
instruction exception occurs.
In the DSP mode, STC and LDC instructions for the SR register can be executed even in user
mode. (Note, however, that only the RC[11:0], DMX, DMY, and RF[1:0] bits in the DSP
extension bits can be changed.)
7.4.2
In the DSP mode, a part of the space P2 (Uxy area: H'A5000000 to H'A5FFFFFF) can be accessed
in user mode and no CPU address error will occur even if the area is accessed.
7.4.3
If an exception is requested or an exception is accepted during repeat control, the exception may
not be accepted correctly or a program execution may not be returned correctly from exception
processing that is different from the normal state. These restrictions may occur from repeat
detection instruction to repeat end instruction while the repeat counter is 1 or more. In this section,
this period is called the repeat control period.
The following shows program examples where the number of instructions in the repeat loop are 4
or more, 3, 2, and 1, respectively. In this section, a repeat detection instruction and its instruction
address are described as RptDtct. The first, second, and third instructions following the repeat
detection instruction are described as RptDtct1, RptDtct2, and RptDtct3. In addition, [A], [B],
[C1], and [C2] in the following examples indicate instructions where a restriction occurs. Table
7.2 summarizes the instruction positions and restriction types.
Page 234 of 1414
Exception Processing While DSP Extension Function is Valid
Illegal Instruction Exception and Illegal Slot Instruction Exception
CPU Address Error
Exception in Repeat Control Period
SH7720 Group, SH7721 Group
R01UH0083EJ0400 Rev. 4.00
Sep 21, 2010