DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 627

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K 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: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.6.2
Before transmitting and receiving data, first clear the TE and RE bits in SCR to 0, then initialize
the SCI as described in a sample flowchart in figure 14.15. When the operating mode, transfer
format, etc., is changed, the TE and RE bits must be cleared to 0 before making the change. When
the TE bit is cleared to 0, the TDRE flag is set to 1. However, clearing the RE bit to 0 does not
initialize the RDRF, PER, FER, and ORER flags, or RDR.
SCI Initialization (Clocked Synchronous Mode)
Note: In simultaneous transmit and receive operations, the TE and RE bits should both
Clear TE and RE bits in SCR to 0
Set TE or RE bit in SCR to 1, and
set RIE, TIE, TEIE, and MPIE bits
Set corresponding bit in ICR to 1
Set CKE1 and CKE0 bits in SCR
Set data transfer format in
be cleared to 0 or set to 1 simultaneously.
(TE and RE bits are 0)
1-bit interval elapsed?
Start initialization
Set value in BRR
SMR and SCMR
<Transfer start>
Figure 14.15 Sample SCI Initialization Flowchart
Yes
Wait
No
[2]
[3]
[5]
[1]
[4]
[1]
[2] Set the clock selection in SCR. Be sure
[3] Set the data transfer format in SMR and
[4] Write a value corresponding to the bit
[5] Wait at least one bit interval, then set
to clear bits RIE, TIE, TEIE, and MPIE,
and bits TE and RE, to 0.
SCMR.
rate to BRR. This step is not necessary
if an external clock is used.
the TE bit or RE bit in SCR to 1.
Also set the RIE, TIE TEIE, and MPIE
bits. Setting the TE and RE bits enables
the TxD and RxD pins to be used.
Section 14 Serial Communication Interface (SCI)
Set the bit in ICR for the corresponding
pin when receiving data or using an
external clock.
Rev. 2.00 Jun. 28, 2007 Page 601 of 864
REJ09B0341-0200