DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 31

• 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: -

1.4
Table 1.2 summarizes the pin functions.
Table 1.2
Classification
Power supply
Clock
Operating mode
control
Pin Functions
Pin Functions
Symbol
Vcc
Vss
V
PLLVss
EXTAL
XTAL
MD1
FWE
CL
I/O
I
I
O
I
O
I
I
I
Name
Power supply
Ground
Power supply for
internal power-
down
PLL ground
External clock
Crystal
Mode set
Flash memory
write enable
Function
Power supply pin
Connect all Vcc pins to the system.
There will be no operation if any pins
are open.
Ground pin
Connect all Vss pins to the system
power supply (0V). There will be no
operation if any pins are open.
External capacitance pins for internal
power-down power supply
Connect these pins to Vss via a 0.1
to 0.47 μF capacitor (placed close to
the pins).
Ground pin for the on-chip PLL
oscillator
Connected to a crystal resonator.
An external clock signal may also be
input to the EXTAL pin.
Connected to a crystal resonator.
Sets the operating mode. Do not
change values on this pin during
operation.
Pin for flash memory
Flash memory can be protected
against programming or erasure
through this pin.
Rev. 5.00 Mar. 06, 2009 Page 11 of 770
REJ09B0243-0500