HD64F3029XBL25V Renesas Electronics America, HD64F3029XBL25V Datasheet - Page 555

• Manufacturer Part Number: HD64F3029XBL25V
• Description: MCU 5V 512K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3029XBL25V

• 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: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K 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: -

14.3.3
Figure 14.3 shows the smart card interface data format. In reception in this mode, a parity check is
carried out on each frame, and if an error is detected an error signal is sent back to the transmitting
device to request retransmission of the data. In transmission, the error signal is sampled and the
same data is retransmitted if the error signal is low.
The operating sequence is as follows.
1. When the data line is not in use it is in the high-impedance state, and is fixed high with a pull-
2. The transmitting device starts transfer of one frame of data. The data frame starts with a start
3. With the smart card interface, the data line then returns to the high-impedance state. The data
4. The receiving device carries out a parity check. If there is no parity error and the data is
Rev. 2.0, 06/04, page 526 of 980
up resistor.
bit (Ds, low-level), followed by 8 data bits (D0 to D7) and a parity bit (Dp).
line is pulled high with a pull-up resistor.
received normally, the receiving device waits for reception of the next data. If a parity error
occurs, however, the receiving device outputs an error signal (DE, low-level) to request
retransmission of the data. After outputting the error signal for the prescribed length of time,
the receiving device places the signal line in the high-impedance state again. The signal line is
pulled high again by a pull-up resistor.
No parity error
Parity error
Legend
Ds:
D0 to D7: Data bits
Dp:
DE:
Data Format
Start bit
Parity bit
Error signal
Ds
Ds
D0
D0
Figure 14.3 Smart Card Interface Data Format
D1
D1
Output from transmitting device
Output from transmitting device
D2
D2
D3
D3
D4
D4
D5
D5
D6
D6
D7
D7
Dp
Dp
Output from
receiving
device
DE