HD6473834HV Renesas Electronics America, HD6473834HV Datasheet - Page 306

• Manufacturer Part Number: HD6473834HV
• Description: MCU 5V 32K PB-FREE 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD6473834HV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: SCI
• Peripherals: LCD, PWM
• Number Of I /o: 71
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Receiving Multiprocessor Data: Figure 10.25 shows a typical flow chart for receiving data using
a multiprocessor format. After SCI3 initialization, follow the procedure below.
1
2
3
4
Figure 10.25 Typical Flow Chart for Receiving Serial Data Using Multiprocessor Format
Read bits OER and FER in SSR
Read bits OER and FER in SSR
Read received data in RDR
Read received data in RDR
Set bit MPIE in SCR3 to 1
Clear bit RE in SCR3 to 0
Read bit RDRF in SSR
Read bit RDRF in SSR
Continue receiving?
OER + FER = 1?
OER + FER = 1?
RDRF = 1?
RDRF = 1?
Own ID?
Start
End
No
Yes
Yes
Yes
No
No
5
Error processing
Yes
Yes
Yes
No
No
No
A
Start receive error processing
End receive error processing
Clear bits OER and
FER in SSR to 0.
1.
2.
3. Read the serial status register (SSR) and confirm that
4.
5.
No
No
OER = 1?
FER = 1?
Set bit MPIE in serial control register 3 (SCR3) to 1.
Read bits OER and FER in the serial status register (SSR)
to determine if an error has occurred. If a receive error has
occurred, receive error processing is executed.
RDRF = 1. If RDRF = 1, read the data in the received data
register (RDR) and compare it with the processor’s own ID.
If the received data does not match the ID, set bit MPIE to
1 again. Bit RDRF is automatically cleared to 0 when data
in the received data register (RDR) is read.
Read SSR, check that bit RDRF = 1, then read received
data from the receive data register (RDR).
If a receive error occurs, read bits OER and FER in SSR
to determine which error occurred. After the necessary
error processing, be sure to clear the error flags to 0.
Serial data transfer cannot take place while
bit OER or FER is set to 1.
When a framing error occurs, a break can be detected by
reading the RXD pin value.
Yes
Yes
Overrun error
Framing error
processing
processing
Break?
No
Yes
A
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