DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 540

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• 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: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: -

Section 13 Serial Communication Interface
Restrictions on Usage of the Serial Clock
When transmitting data using an external clock as the serial clock, an interval of at least 5 states is
necessary between clearing the TDRE bit in SSR and the start (falling edge) of the first transmit
clock pulse corresponding to each frame (see figure 13.22). This condition is also needed for
continuous transmission. If it is not fulfilled, operational error will occur.
Rev. 3.00 Sep 27, 2006 page 512 of 872
REJ09B0325-0300
SCK
TDRE
TXD
Note: * Ensure that t
t *
X0
5 states.
Figure 13.22 Serial Clock Transmission (Example)
X1
X2
X3
X4
X5
X6
X7
t *
Y0
Continuous transmission
Y1
Y2
Y3