DF71251AD50FPV Renesas Electronics America, DF71251AD50FPV Datasheet - Page 607

• 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: -

17.3
Flash memory is controlled by the pins as shown in table 17.3.
Table 17.3 Pin Configuration
17.4
17.4.1
The registers/parameters, which control flash memory when the on-chip flash memory is valid are
shown in table 17.4.
There are several operating modes for accessing flash memory, for example, read mode/program
mode. The correspondence of operating modes and registers/parameters for use is shown in table
17.5.
Pin Name
Power-on reset
Flash programming
enable
Mode 1
Transmit data
Receive data
Input/Output Pins
Register Descriptions
Registers
Symbol
RES
FWE
MD1
TXD1 (PA4)
RXD1 (PA3)
I/O
Input
Input
Input
Output
Input
Function
Reset
Hardware protection when
programming flash memory
Sets operating mode of this LSI
Serial transmit data output (used in
boot mode)
Serial receive data input (used in boot
mode)
Rev. 5.00 Mar. 06, 2009 Page 587 of 770
REJ09B0243-0500