HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 504

• Manufacturer Part Number: HD6413007F20
• Description: IC H8 MCU ROMLESS 5V 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD6413007F20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 35
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

13. Serial Communication Interface
Transmitting and Receiving Data:
• SCI Initialization (Synchronous Mode): Before transmitting or receiving data, clear the TE and
Figure 13.15 shows a sample flowchart for initializing the SCI.
Rev.5.00 Sep. 12, 2007 Page 474 of 764
REJ09B0396-0500
Note: In simultaneous transmitting and receiving, the TE and RE bits should be cleared to 0 or
Clear TE and RE bits to 0 in SCR
Set RIE, TIE, TEIE, MPIE, CKE1
<Start transmitting or receiving>
and CKE0 bits in SCR (leaving
RE bits to 0 in SCR, then initialize the SCI as follows.
When changing the communication mode or format, always clear the TE and RE bits to 0
before following the procedure given below. Clearing TE to 0 sets the TDRE flag to 1 and
initializes TSR. Clearing RE to 0, however, does not initialize the RDRF, PER, FER, and
ORER flags, or RDR, which retain their previous contents.
Select communication format
Set RIE, TIE, TEIE, and MPIE
TE and RE bits cleared to 0)
Set TE or RE bit to 1 in SCR
1-bit interval elapsed?
set to 1 simultaneously.
Start of initialization
Set value in BRR
bits as necessary
in SMR
Yes
Figure 13.15 Sample Flowchart for SCI Initialization
Wait
Yes
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
Set the clock source in SCR. Clear the RIE,
TIE, TEIE, MPIE, TE, and RE bits to 0.
Select the communication format in SMR.
Write the value corresponding to the bit rate in
BRR.
This step is not necessary when an external
clock is used.
Wait for at least the interval required to transmit
or receive one bit, then set the TE or RE bit to
1 in SCR. Set the RIE, TIE, TEIE, and MPIE
bits. Setting the TE or RE bit enables the SCI
to use the TxD or RxD pin.