DF3026X25V Renesas Electronics America, DF3026X25V Datasheet - Page 426

• Manufacturer Part Number: DF3026X25V
• Description: MCU 3V 256K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3026X25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 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: -

Section 12 Serial Communication Interface
Figure 12.4 shows a sample flowchart for initializing the SCI.
Rev. 2.00 Sep 20, 2005 page 386 of 800
REJ09B0260-0200
Set CKE1 and CKE0 bits in SCR
Select communication format
Set TE or RE bit to 1 in SCR
Set the RIE, TIE, TEIE, and
(leaving TE and RE bits
Clear TE and RE bits
1-bit interval elapsed?
<End of initialization>
Start of initialization
Set value in BRR
cleared to 0)
to 0 in SCR
MPIE bits
in SMR
Figure 12.4 Sample Flowchart for SCI Initialization
Yes
Wait
No
(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. If clock output is selected in
asynchronous mode, clock output starts
immediately after the setting is made in
SCR.
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 as necessary.
Setting the TE or RE bit enables the SCI
to use the TxD or RxD pin.