DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 660
DF71251AD50FPV
Manufacturer Part Number
DF71251AD50FPV
Description
MCU RISC FLASH 32K 8K 64LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH Tinyr
Datasheet
1.DF71243N50FPV.pdf
(794 pages)
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
-
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Part Number:
DF71251AD50FPV
Manufacturer:
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In response to the inquiry on operating frequency, the boot program returns the number of
operating frequencies and the maximum and minimum values.
Rev. 5.00 Mar. 06, 2009 Page 640 of 770
REJ09B0243-0500
Command
Response
⎯ Command H'23 (1 byte): Inquiry on operating frequency
⎯ Response H'33 (1 byte): Response to the inquiry on operating frequency
⎯ Size (1 byte): The total length of the number of frequency types, and maximum and
⎯ Number of frequency types (1 byte): The number of operating clock frequencies required
⎯ Minimum value of operating frequency (2 bytes): The minimum frequency of a frequency-
⎯ Maximum value of operating frequency (2 bytes): The maximum frequency of a frequency-
⎯ SUM (1 byte): Checksum
Inquiry on operating frequency
minimum values of operating frequency fields.
within the device.
For example, the value two indicates main and peripheral operating clock frequencies.
multiplied or -divided clock signal.
The value in this field and in the maximum value field is the frequency in MHz to two
decimal places, multiplied by 100 (for example, if the frequency is 20.00 MHz, the value
multiplied by 100 is 2000, so H'07D0 is returned here).
multiplied or -divided clock signal.
As many pairs of minimum values are included as there are frequency types.
H'33
Operating freq. (min)
…
SUM
H'23
Size
No. of frequency types
Operating freq. (max)
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