DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 636

• 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: -

(1) On-Chip RAM Address Map when Programming/Erasing is Executed
Rev. 5.00 Mar. 06, 2009 Page 616 of 770
REJ09B0243-0500
Parts of the procedure program that are made by the user, like download request,
programming/erasing procedure, and decision of the result, must be executed in the on-chip
RAM. All of the on-chip program that is to be downloaded is in on-chip RAM. Note that on-
chip RAM must be controlled so that these parts do not overlap.
Figure 17.10 shows the program area to be downloaded.
programming/erasing
processing period
Unusable area in
(Size: 3 kbytes)
downloaded
Area to be
Figure 17.10 RAM Map after Download
(Return value: 1 byte)
programming program
System use area
Area that can be
Area that can be
or Initialization +
<On-chip RAM>
erasing program
Programming/
process entry
used by user
Initialization +
erasing entry
used by user
Initialization
(15 bytes)
DPFR
Address
RAMTOP (H'FFFFA000)
FTDAR setting
FTDAR setting + 16
FTDAR setting + 32
FTDAR setting + 3072
RAMEND (H'FFFFBFFF)