DF2552BR26DV Renesas Electronics America, DF2552BR26DV Datasheet - Page 775

• Manufacturer Part Number: DF2552BR26DV
• Description: IC H8S/2552 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2552BR26DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

20.5.2
Software protection is set up in any of three ways: by disabling the downloading of on-chip
programs for programming and erasing, by means of a key code, and by the RAM-emulation
register.
Table 20.11 Software Protection
20.5.3
Error protection is a mechanism for aborting programming or erasure when an error occurs, in the
form of the microcomputer entering runaway during programming/erasing of the flash memory or
operations that are not according to the established procedures for programming/erasing. Aborting
programming or erasure in such cases prevents damage to the flash memory due to excessive
programming or erasing.
If the microcomputer malfunctions during programming/erasing of the flash memory, the FLER
bit in the FCCS register is set to 1 and the error-protection state is entered, and this aborts the
programming or erasure.
Item
Protection by the
SCO bit
Protection by the
FKEY register
Emulation protection •
Software Protection
Error Protection
Description
•
•
The program/erase-protected state is
entered by clearing the SCO bit in
FCCS which disables the downloading
of the programming/erasing programs.
Downloading and
programming/erasing are disabled
unless the required key code is written
in FKEY. Different key codes are used
for downloading and for
programming/erasing.
The program/erase-protected state is
entered by setting the RAMS bit in the
RAM emulation register (RAMER).
Rev. 6.00 Sep. 24, 2009 Page 727 of 928
Download
Function to Be Protected
Section 20 Flash Memory
Program/Erase
REJ09B0099-0600