DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 507

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Receiving Multiprocessor Serial Data
Figure 13.12 shows a sample flowchart for receiving multiprocessor serial data and indicates
the procedure to follow.
No
No
No
Figure 13.12 Sample Flowchart for Receiving Multiprocessor Serial Data (1)
Read ORER and FER flags in SSR
Read ORER and FER flags in SSR
Read receive data from RDR
Read receive data from RDR
Set MPIE bit to 1 in SCR
Read RDRF flag in SSR
Read RDRF flag in SSR
Clear RE bit to 0 in SCR
Finished receiving?
FER
FER
Start receiving
RDRF = 1?
RDRF = 1?
Own ID?
Initialize
End
ORER = 1
ORER = 1
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
3
1
2
No
(continued on next page)
Error handling
4
5
Section 13 Serial Communication Interface
Rev. 3.00 Mar 21, 2006 page 477 of 814
1. SCI initialization: the receive data
2. ID receive cycle: set the MPIE bit to 1
3. SCI status check and ID check: read
4. SCI status check and data receiving:
5. Receive error handling and break
function of the RxD pin is selected
automatically.
in SCR.
SSR, check that the RDRF flag is set
to 1, then read data from RDR and
compare with the processor’s own ID.
If the ID does not match, set the MPIE
bit to 1 again and clear the RDRF flag
to 0. If the ID matches, clear the RDRF
flag to 0.
read SSR, check that the RDRF flag is
set to 1, then read data from RDR.
detection: if a receive error occurs,
read the ORER and FER flags in SSR
to identify the error. After executing the
necessary error handling, clear the
ORER and FER flags both to 0.
Receiving cannot resume while either
the ORER or FER flag remains set to
1. When a framing error occurs, the
RxD pin can be read to detect the
break state.
REJ09B0302-0300