DF2268FA13V Renesas Electronics America, DF2268FA13V Datasheet - Page 393

• Manufacturer Part Number: DF2268FA13V
• Description: IC H8S/2268 MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2268FA13V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 13MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 67
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

13.4.3
Either an internal clock generated by the on-chip baud rate generator or an external clock input at
the SCK pin can be selected as the SCI’s serial clock, according to the setting of the C/A bit in
SMR and the CKE0 and CKE1 bits in SCR. When an external clock is input at the SCK pin, the
clock frequency should be 16 times the bit rate used. When an external clock is selected, a base
clock with an average transfer rate can be selected by setting bits ACS2 to ACS0 in SEMR_0.
When the SCI is operated on an internal clock, the clock can be output from the SCK pin when
setting CKE1 = 0 and CKE0 = 1. The frequency of the clock output in this case is equal to the bit
rate, and the phase is such that the rising edge of the clock is in the middle of the transmit data, as
shown in figure 13.7.
SCK
TxD
Figure 13.7 Relationship between Output Clock and Transfer Data Phase
Clock
0
D0
D1
D2
(Asynchronous Mode)
D3
D4
1 frame
D5
Section 13 Serial Communication Interface (SCI)
D6
Rev. 5.00 Sep. 01, 2009 Page 341 of 656
D7
0/1
1
1
REJ09B0071-0500