DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 656

• 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: -

All commands in the above table, except for the boot program state inquiry command (H'4F), are
valid until the boot program accepts the transition-to-programming/erasure state command (H'40).
That is, until the transition command is accepted, the host can continue to send commands listed in
the above table until it has made the necessary inquiries and selections. The host can send the boot
program state inquiry command (H'4F) even after acceptance of the transition-to-
programming/erasure state command (H'40) by the boot program.
(1)
In response to the inquiry on supported devices, the boot program returns the device codes of the
devices it supports and the product names of their respective boot programs.
Rev. 5.00 Mar. 06, 2009 Page 636 of 770
REJ09B0243-0500
Command
Response
⎯ Command H'20 (1 byte): Inquiry on supported devices
⎯ Response H'30 (1 byte): Response to the inquiry on supported devices
⎯ Size (1 byte): The length of data for transfer excluding the command code, this field (size),
⎯ Number of devices (1 byte): The number of device models supported by the boot program
⎯ Number of characters (1 byte): The number of characters in the device code and product
⎯ Device code (4 bytes): Device code of a supported device (ASCII encoded)
⎯ Product name (n bytes): Product code of the boot program (ASCII encoded)
⎯ SUM (1 byte): Checksum
Inquiry on supported devices
and the checksum. Here, it is the total number of bytes taken up by the number of devices,
number of characters, device code, and product name fields.
embedded in the microcomputer.
name fields.
This is set so that the total sum of all bytes from the command code to the checksum is
H'00.
H'20
H'30
Number of
characters
…
SUM
Size
Device code
No. of devices
Product name