DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 676

• 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: -

• Sum checking of the user MAT
In response to the command for sum checking of the user MAT, the boot program adds all bytes of
data in the user MAT and returns the result.
• Blank checking of the user MAT
In response to the command for blank checking of the user MAT, the boot program checks to see
if the whole of the user MAT is blank; the value returned indicates the result.
Rev. 5.00 Mar. 06, 2009 Page 656 of 770
REJ09B0243-0500
Command
Response
Command
Response
Error
response
⎯ Command H'4B (1 byte): Sum checking of the user MAT
⎯ Response H'5B (1 byte): Response to sum checking of the user MAT
⎯ Size (1 byte): The number of characters in the checksum for the MAT (fixed to 4)
⎯ Checksum for the MAT (4 bytes): Result of checksum calculation for the user MAT:
⎯ SUM (1 byte): Checksum (for the transmitted data)
⎯ Command H'4D (1 byte): Blank checking of the user MAT
⎯ Response H'06 (1 byte): Response to blank checking of the user MAT
⎯ Error response H'CD (1 byte): Error response to blank checking of the user MAT
⎯ Error code H'52 (1 byte): Non-erased error
the total of all data in the MAT, in byte units.
The ACK code is returned when the whole area is blank (all bytes are H'FF).
H'4B
H'5B
H'4D
H'06
H'CD
Size
H'52
Checksum for the MAT
SUM