DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 667

• 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: -

• Command Error
Command errors are generated by undefined commands, commands sent in an incorrect order, and
the inability to accept a command. For example, sending the clock-mode selection command
before device selection or an inquiry command after the transition-to-programming/erasure state
command generates a command error.
• Order of Commands
In the inquiry-and-selection state, commands should be sent in the following order.
1. Send the inquiry on supported devices command (H'20) to get the list of supported devices.
2. Select a device from the returned device information, and send the device selection command
3. Send the inquiry on clock mode command (H'21) to get the available clock modes.
4. Select a clock mode from among the returned clock modes, and send the clock-mode selection
5. After selection of the device and clock mode, send the commands to inquire about frequency
6. Taking into account the returned information on the frequency multipliers and operating
7. After the device and clock mode have been selected, get the information required for
8. After making all necessary inquiries and the new bit rate selection, send the transition-to-
Error
response
⎯ Error response H'80 (1 byte): Command error
⎯ Command H'xx (1 byte): Received command
(H'10) to select that device.
command (H'11).
multipliers (H'22) and operating frequencies (H'23) to get the information required to select a
new bit rate.
frequencies, send a new-bit-rate selection command (H'3F).
programming and erasure of the user MAT by sending the commands to inquire about the user
MAT (H'25), erasure block (H'26), and programming size (H'27).
programming/erasure state command (H'40) to place the boot program in the
programming/erasure state.
H'80
H'xx
Rev. 5.00 Mar. 06, 2009 Page 647 of 770
REJ09B0243-0500