DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 66

• 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: -

2.6
The CPU has the five processing states: reset, exception handling, program execution, and power-
down. Figure 2.4 shows the CPU state transition.
Rev. 5.00 Mar. 06, 2009 Page 46 of 770
REJ09B0243-0500
Processing States
When internal power-on reset by WDT
or internal manual reset by WDT occurs.
From any state
when RES = 0
Figure 2.4 Transitions between Processing States
Power-on reset state
Sleep mode
SSBY bit = 0
for SLEEP
instruction
RES = 1
processing
From any state
when RES = 1 and MRES = 0
Exception
source
occurs
execution state
handling state
Exception
Program
RES = 0
Exception
processing
ends
SSBY bit = 1 and
STBYMD bit = 1
RES = 1,
MRES = 1
for SLEEP
instruction
Manual reset state
standby mode
Software
Power-down mode
Reset state
NMI interrupt or IRQ
interrupt occurs