DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 558

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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 14 Smart Card Interface
14.3.6
Initialization
Before transmitting or receiving data, initialize the smart card interface by the procedure below.
Initialization is also necessary when switching from transmit mode to receive mode or from
receive mode to transmit mode.
1. Clear the TE and RE bits to 0 in the serial control register (SCR).
2. Clear the ERS, PER, and ORER error flags to 0 in the serial status register (SSR).
3. Set the parity mode bit (O/E) and baud rate generator clock source select bits (CKS1 and
4. Set the SMIF, SDIR, and SINV bits as required in the smart card mode register (SCMR).
5. Set a value corresponding to the desired bit rate in the bit rate register (BRR).
6. Set clock enable bit 0 (CKE0) as required in the serial control register (SCR). Write 0 in the
7. Wait for at least the interval required to transmit or receive one bit, then set the TIE, RIE, TE,
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CKS0) as required in the serial mode register (SMR). At the same time, clear the C/A, CHR,
and MP bits to 0, and set the STOP and PE bits to 1.
When the SMIF bit is set to 1, the TxD
their serial communication interface functions, and are placed in the high-impedance state.
TIE, RIE, TE, RE, MPIE, TEIE, and CKE1 bits. If bit CKE0 is set to 1, a serial clock will be
output from the SCK
and RE bits as necessary in SCR. Do not set TE and RE both to 1, except when performing a
loop-back test.
Transmitting and Receiving Data
0
pin.
0
and RxD
0
pins switch from their I/O port functions to