DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 751

• Manufacturer Part Number: DF71251AD50FPV
• Description: MCU RISC FLASH 32K 8K 64LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Tinyr

Specifications of DF71251AD50FPV

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

21.6
21.6.1
This LSI includes an internal step-down circuit to automatically reduce the internal power supply
voltage to an appropriate level. Between this internal stepped-down power supply (V
the V
be connected. Connection of the external capacitor is shown in figure 21.17. The external
capacitor should be located near the pin. Do not apply any power supply voltage to the V
SS
pin, a capacitor (ranging from 0.1 to 0.47 μF) for stabilizing the internal voltage needs to
Usage Note
Notes on Connecting V
External power-supply
stabilizing capacitor
Note:
Do not apply any power supply voltage to the V
Use multilayer ceramic capacitors (one capacitor ranging
from 0.1 to 0.47 µF for each V
located near the pin.
Figure 21.17 Connection of V
CL
Capacitor
One capacitor ranging from 0.1 to 0.47 µF
V
V
CL
SS
One capacitor ranging from 0.1 to 0.47 µF
CL
V
V
pin), which should be
SS
CL
CL
Rev. 5.00 Mar. 06, 2009 Page 731 of 770
Capacitor
CL
pin.
REJ09B0243-0500
CL
pin) and
CL
pin.