HD64F7044F28V Renesas Electronics America, HD64F7044F28V Datasheet - Page 462

• Manufacturer Part Number: HD64F7044F28V
• Description: IC SUPERH MCU FLASH 112QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7040r

Specifications of HD64F7044F28V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 28.7MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 74
• 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: 112-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 7 Pipeline Operation
5. When an LDS (register) instruction is located immediately after a MAC.W instruction
Rev. 5.00 Jun 30, 2004 page 446 of 512
REJ09B0171-0500O
Other instruction
Other instruction
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When the contents of a MAC register are loaded from a general-purpose register using an LDS
instruction, an MA stage for accessing 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
7.30) to create a single slot. The MA of this LDS contends with IF. Figure 7.30 illustrates how
this occurs, assuming MA and IF contention.
Figure 7.30 LDS (Register) Instruction Immediately After a MAC.W Instruction
MAC.W
MAC.W
LDS
LDS
......
......
IF
if
ID
ID
IF
if
EX
EX
—
—
MA
MA
ID
—
if
MA
—
—
—
ID
IF
mm
MA
EX
EX
ID
ID
IF
if
mm
mm
EX
M——A
ID
—
—
M————A
if
mm
mm
—
—
—
—
mm
EX
ID
—
—
EX .....
EX
ID EX
IF ID EX
MA
.....
: Slot
: Slot