HD6417034AFI20 Renesas Electronics America, HD6417034AFI20 Datasheet - Page 430

• Manufacturer Part Number: HD6417034AFI20
• Description: IC SUPERH MPU ROMLESS 112QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7030r

Specifications of HD6417034AFI20

• Core Processor: SH-1
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

Section 13 Serial Communication Interface (SCI)
Receiving Serial Data (Synchronous Mode): Figure 13.18 shows a sample flowchart for
receiving serial data. When switching from asynchronous mode to synchronous mode, make sure
that ORER, PER, and FER are cleared to 0. If PER or FER is set to 1, the RDRF bit will not be set
and both transmitting and receiving will be disabled. Figure 13.19 shows an example of SCI
receive operation.
The procedure for receiving serial data is listed below.
1. SCI initialization: select the RxD pin function with the PFC.
2. Receive error handling and break detection: if a receive error occurs, read the ORER bit in
3. SCI status check and receive data read: read the serial status register (SSR), check that RDRF
4.
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SSR to identify the error. After executing the necessary error handling, clear ORER to 0.
Transmitting/receiving cannot resume if ORER remains set to 1.
is set to 1, then read receive data from the receive data register (RDR) and clear RDRF to 0.
The RXI interrupt can also be used to determine if the RDRF bit has changed from 0 to 1.
To continue receiving serial data: read RDR, and clear RDRF to 0 before the frame MSB (bit
7) of the current frame is received. If the DMAC is started by a receive-data-full interrupt
(RXI) to read RDR, the RDRF bit is cleared automatically, so this step is unnecessary.