HD6473834HV Renesas Electronics America, HD6473834HV Datasheet - Page 299

• 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: Figure 10.19 shows a typical flow chart for receiving data. After SCI3 initialization,
follow the procedure below.
282
1
2
3
Read received data in RDR
4
Clear bit RE in SCR3 to 0
Read bit RDRF in SSR
Read bit OER in SSR
Clear bit OER in
error processing
Figure 10.19 Typical Data Receiving Flow Chart in Synchronous Mode
Overrun error
Start overrun
End overrun
RDRF = 1?
processing
processing
receiving?
OER = 1?
Continue
SSR to 0
Start
End
Yes
No
No
4
Overrun error processing
Yes
Yes
No
1. Read bit OER in the serial status register (SSR)
2.
3.
4.
to determine if an error has occurred. If an
overrun error has occurred, overrun error
processing is executed.
Read the serial status register (SSR), and after
confirming that bit RDRF = 1, read received
data from the receive data register (RDR).
When data is read from RDR, RDRF is
automatically cleared to 0.
To continue receiving data, read bit RDRF and
read the received data in RDR before the MSB
(bit 7) of the present frame is received.
When data is read from RDR, RDRF is
automatically cleared to 0.
When an overrun error occurs, read bit OER in
SSR. After the necessary error processing,
be sure to clear OER to 0.
Data receiving cannot be resumed while bit
OER is set to 1.