DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 540

MCU 5V 512K 100-TQFP

DF3052BX25V

Manufacturer Part Number
DF3052BX25V
Description
MCU 5V 512K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheets

Specifications of DF3052BX25V

Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
70
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 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
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DF3052BX25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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 (SMR). When
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,
Transmitting Serial Data: The transmitting procedure in smart card mode is different from the
normal SCI procedure, because of the need to sample the error signal and retransmit. Figure 14.4
shows a flowchart for transmitting, and figure 14.5 shows the relation between a transmit
operation and the internal registers.
1. Initialize the smart card interface by the procedure given above in Initialization.
2. Check that the ERS error flag is cleared to 0 in SSR.
3. Check that the TEND flag is set to 1 in SSR. Repeat steps 2 and 3 until this check passes.
4. Write transmit data in TDR and clear the TDRE flag to 0. The data will be transmitted and the
5. To continue transmitting data, return to step 2.
6. To terminate transmission, clear the TE bit to 0.
This procedure may include interrupt handling and DMA transfer.
If the TIE bit is set to 1 to enable interrupt requests, when transmission is completed and the
TEND flag is set to 1, a transmit-data-empty interrupt (TXI) is requested. If the RIE bit is set to 1
Rev. 3.00 Mar 21, 2006 page 510 of 814
REJ09B0302-0300
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.
the SMIF bit is set to 1, the TxD
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.
TEND flag will be cleared to 0.
Transmitting and Receiving Data
0
pin.
0
and RxD
0
pins switch from their I/O port functions to their

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