DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 821

• Manufacturer Part Number: DS72030W200FPV
• Description: MPU, 32BIT, SH7203, ROMLESS, 240QFP
• Manufacturer: Renesas Electronics America
• Series: SH7200r

Specifications of DS72030W200FPV

• Core Size: 32bit
• Program Memory Size: 32KB
• Cpu Speed: 200MHz
• Digital Ic Case Style: QFP
• No. Of Pins: 240
• Supply Voltage Range: 1.1V To 1.3V
• Operating Temperature Range: -20°C To +85°C
• Svhc: No SVHC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 15 Serial Communication Interface with FIFO (SCIF)
15.6.7
Selection of Base Clock in Asynchronous Mode
In this LSI, when asynchronous mode is selected, the base clock frequency within a bit period can
be set to the frequency 16 or 8 times the bit rate by setting the ABCS bit in SCEMR.
Note that, however, if the base clock frequency 8 times the bit rate is used, receive margin is
decreased as calculated using equation 1 in section 15.6.6, Receive Data Sampling Timing and
Receive Margin (Asynchronous Mode).
If the desired bit rate can be set simply by setting SCBRR and the CKS1and CKS0 bits in
SCSMR, it is recommended to use the base clock frequency within a bit period 16 times the bit
rate (by setting the ABCS bit in SCEMR to 0). If an internal clock is selected as a clock source
and the SCK pin is not used, the bit rate can be increased without decreasing receive margin by
selecting double-speed mode for the baud rate generator (setting the BGDM bit in SCEMR to 1).
Rev. 3.00 Sep. 28, 2009 Page 789 of 1650
REJ09B0313-0300