HD64F7045F28V Renesas Electronics America, HD64F7045F28V Datasheet - Page 480

• Manufacturer Part Number: HD64F7045F28V
• Description: IC SH2 MCU FLASH 144QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7040r

Specifications of HD64F7045F28V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 28.7MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 98
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 7 Pipeline Operation
8. When an LDS.L (memory) instruction is located immediately after a MAC.L instruction
Rev. 5.00 Jun 30, 2004 page 464 of 512
REJ09B0171-0500O
Other instruction
Other instruction
Other instruction
Other instruction
Other instruction
Other instruction
When the contents of a MAC register are loaded from memory using an LDS instruction, an
MA stage for accessing the memory and the memory and the multiplier is added to the LDS
instruction, as described later. When the MA of the LDS instruction contends with the
operating multiplier (mm), the MA is extended until the mm ends (the M—A shown in the
dotted line box in figure 7.53) to create a single slot. The MA of the LDS contends with IF.
Figure 7.53 illustrates how this occurs, assuming MA and IF contention.
Figure 7.53 LDS.L (Memory) Instruction Immediately After a MAC.L Instruction
MAC.L
MAC.L
LDS.L
LDS.L
......
......
IF
if
ID
ID
IF
if
EX
EX
—
—
MA
MA
ID
—
if
MA
ID
—
—
IF
—
MA
EX
mm
EX
ID
ID
if
IF
mm
mm
M—————–—A
EX
—
—
M————A
ID
if
mm
mm
—
—
—
—
mm
mm
—
—
— EX
—
mm
—
—
ID
EX MA
EX
ID
IF
......
EX
ID EX
......
: Slot
: Slot