DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 602

• 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: -

17.2.2
When each mode pin and the FWE pin are set in the reset state and the reset signal is released, the
microcomputer enters each operating mode as shown in figure 17.2. For the setting of each mode
pin and the FWE pin, see tables 17.1 to 17.4.
• Flash memory can be read in user mode, but cannot be programmed or erased.
• Flash memory can be read, programmed, or erased on the board only in user program mode
Table 17.1 Relationship between FWE and MD Pins and Operating Modes
Rev. 5.00 Mar. 06, 2009 Page 582 of 770
REJ09B0243-0500
Pin
RES
FWE
MD1
and boot mode.
Operating Mode
Reset State
0
0/1
0/1
User mode
Figure 17.2 Mode Transition of Flash Memory
FWE = 0
FWE = 1
User Mode
1
0
1
User program
mode
Reset state
On-board programming mode
User Program
Mode
1
1
1
Boot mode
Boot Mode
1
1
0