HD6417751RF240V Renesas Electronics America, HD6417751RF240V Datasheet - Page 754

• Manufacturer Part Number: HD6417751RF240V
• Description: MPU 1.5/3.3V 0K PB-FREE 256-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417751RF240V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 240MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 39
• Program Memory Type: ROMless
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-QFP Exposed Pad, 256-eQFP, 256-HQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

15. Serial Communication Interface (SCI)
Figure 15.17 shows an example of SCI operation for multiprocessor format reception.
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Serial
data
Serial
data
MPIE
RDRF
SCRDR1
value
MPIE
RDRF
SCRDR1
value
1
1
Start
bit
Start
bit
RXI interrupt request
(multiprocessor interrupt)
MPIE = 0
0
0
RXI interrupt request
(multiprocessor
interrupt)
MPIE = 0
Data (ID1)
Data (ID2)
D0
D0
ID1
(Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit)
D1
D1
Figure 15.17 Example of SCI Receive Operation
(a) Data does not match station's ID
D7
D7
(b) Data matches station's ID
MPB
MPB
SCRDR1 data read
and RDRF flag
cleared to 0 by RXI
interrupt handler
SCRDR1 data read
and RDRF flag
cleared to 0 by RXI
interrupt handler
1
1
Stop
bit
Stop
bit
1
1
Start
bit
Start
bit
0
0
D0
D0
Data
(Data1)
Data
(Data2)
As data is not
this station's ID,
MPIE bit is set
to 1 again
D1
D1
As data matches this
station's ID, reception
continues and data is
received by RXI
interrupt handler
D7
D7
ID2
ID1
MPB
MPB
RXI interrupt
request
0
0
Stop
bit
Stop
bit
1
1
MPIE bit set
to 1 again
Idle state
(mark state)
Idle state
(mark state)
The RDRF flag
is cleared to 0
by is the RXI
interrupt handler
Data2
1
1