DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 84

• 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: -

Rev. 5.00 Mar. 06, 2009 Page 64 of 770
REJ09B0243-0500
Bit
15
14 to 12
11 to 9
Bit Name
⎯
IFC[2:0]
BFC[2:0]
Initial
Value
0
011
011
R/W
R
R/W
R/W
Description
Reserved
This bit is always read as 0. The write value should
always be 0.
Internal Clock (Iφ) Frequency Division Ratio
Specify the division ratio of the internal clock (Iφ)
frequency with respect to the output frequency of PLL
circuit. If a prohibited value is specified, subsequent
operation is not guaranteed.
000: Setting prohibited
001: ×1/2
010: Setting prohibited
011: ×1/4 (initial value)
100: ×1/8
Other than above: Setting prohibited
Specify the division ratio of the bus clock (Bφ)
frequency with respect to the output frequency of PLL
circuit. If a prohibited value is specified, subsequent
operation is not guaranteed.
000: Setting prohibited
001: ×1/2
010: Setting prohibited
011: ×1/4 (initial value)
100: ×1/8
Other than above: Setting prohibited
Bus Clock (Bφ) Frequency Division Ratio