HD6417750SF200V Renesas Electronics America, HD6417750SF200V Datasheet - Page 883

• Manufacturer Part Number: HD6417750SF200V
• Description: MPU 3V 16K PB-FREE 208-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7750r

Specifications of HD6417750SF200V

• Core Processor: SH-4
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, FIFO, SCI, SmartCard
• Peripherals: DMA, POR, WDT
• Number Of I /o: 28
• Program Memory Type: ROMless
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 2.07 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 208-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

When performing data transfer using the DMAC, it is essential to set and enable the DMAC
before carrying out SCI settings. For details of the DMAC setting procedures, see section 14,
Direct Memory Access Controller (DMAC).
17.4
The following points should be noted when using the SCI as a smart card interface.
(1) Receive Data Sampling Timing and Receive Margin
In asynchronous mode, the SCI operates on a base clock with a frequency of 372 times the transfer
rate. In reception, the SCI synchronizes internally with the fall of the start bit, which it samples on
the base clock. Receive data is latched at the rising edge of the 186th base clock pulse. The timing
is shown in figure 17.10.
Synchronization
sampling timing
Data sampling
Receive data
Base clock
timing
(RxD)
Usage Notes
Figure 17.10 Receive Data Sampling Timing in Smart Card Mode
0
186 clocks
Start
bit
372 clocks
185
371 0
Rev.7.00 Oct. 10, 2008 Page 797 of 1074
D0
185
Section 17 Smart Card Interface
REJ09B0366-0700
371 0
D1