DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 86

• 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: -

4.4.2
OSCCR is an 8-bit readable/writable register that has an oscillation stop detection flag and selects
flag status output to an external pin. OSCCR can be accessed only in bytes.
Rev. 5.00 Mar. 06, 2009 Page 66 of 770
REJ09B0243-0500
Bit
7 to 3
2
1
0
Oscillation Stop Detection Control Register (OSCCR)
Bit Name
⎯
OSCSTOP 0
⎯
OSCERS
Initial value:
Initial
Value
All 0
0
0
R/W:
Bit:
R
7
0
-
R/W
R
R
R
R/W
R
6
0
-
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Oscillation Stop Detection Flag
[Setting condition]
•
[Clearing condition]
•
Reserved
This bit is always read as 0. The write value should
always be 0.
Oscillation Stop Detection Flag Output Select
Selects whether to output the oscillation stop detection
flag signal through the WDTOVF pin.
0: Outputs only the WDT overflow signal through the
1: Outputs the WDT overflow signal and the oscillation
R
5
0
-
WDTOVF pin
stop detection flag signal through the WDTOVF pin
When a stop in the clock input is detected during
normal operation
By a power-on reset input through the RES pin
R
4
0
-
R
3
0
-
STOP
OSC
R
2
0
R
1
0
-
R/W
OSC
ERS
0
0