HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 188

• 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 3 DSP Operating Unit
(1)
The DC bit indicates that carry or borrow is generated from the most significant bit of the
operation result, except the guard-bit parts. Some examples are shown in figure 3.11. This mode is
the default condition. When the input data is negative in a PABS or PNEG instruction, carry is
generated.
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Carry or Borrow Mode: CS[2:0] = B'000
Figure 3.11 DC Bit Generation Examples in Carry or Borrow Mode
+)
–)
0000
0000
0000 0001 0000 0000 0000 0000
0000
0000
0000 0000 0000 0000 0000 0000
Guard bits
Guard bits
Borrow is not detected
0000
0000
0000
0000
Carry is detected
Example 1
Example 3
1111
0000
0000
0000
1111
0000
0000
0000
Carry detecting point
Borrow detecting point
1111
0000
0000
0000
1111
0001
0001
0001
+)
(1)
–)
Guard bits
1111
0011
0011
Guard bits
0000
0000
111111111111111111111111
Carry is not detected
1111
1111
11101000 0000 0000 0000
0000
0000
Borrow is detected
Example 2
Example 4
0111
0001
0001
0001
0000
0000
0000
0000
Carry detecting point
Borrow detecting point
0000
0000
0000
0000
SH7720 Group, SH7721 Group
R01UH0083EJ0400 Rev. 4.00
0000
0000
0001
0010
Sep 21, 2010