DF2506BR26DV Renesas Electronics America, DF2506BR26DV Datasheet - Page 762

• Manufacturer Part Number: DF2506BR26DV
• Description: IC H8S/2506 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2506BR26DV

• 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: -

Section 20 Flash Memory
initialization are performed only once at the beginning. In this kind of operation, note the
following:
20.4.3
This LSI has user boot mode which is initiated with different mode pin settings than those in user
program mode or boot mode. User boot mode is a user-arbitrary boot mode, unlike boot mode that
uses the on-chip SCI.
Only the user MAT can be programmed/erased in user boot mode. Programming/erasing of the
user boot MAT is only enabled in boot mode or programmer mode.
(1)
For the mode pin settings to start up user boot mode, see table 20.1.
When the reset start is executed in user boot mode, the built-in check routine runs. The user MAT
and user boot MAT states are checked by this check routine.
While the check routine is running, NMI and all other interrupts cannot be accepted.
Next, processing starts from the execution start address of the reset vector in the user boot MAT.
At this point, H'AA is set to FMATS because the execution MAT is the user boot MAT.
(2)
For programming the user MAT in user boot mode, additional processing made by setting FMATS
are required: switching from user-boot-MAT selection state to user-MAT selection state, and
switching back to user-boot-MAT selection state after programming completes.
Figure 20.14 shows the procedure for programming the user MAT in user boot mode.
Rev. 6.00 Sep. 24, 2009 Page 714 of 928
REJ09B0099-0600
⎯ Be careful not to damage on-chip RAM with overlapped settings.
⎯ Be sure to initialize both the erasing program and programming program.
User Boot Mode Initiation
User MAT Programming in User Boot Mode
In addition to the RAM emulation area, erasing program area, and programming program
area, areas for the user procedure programs, work area, and stack area are reserved in on-
chip RAM. Do not make settings that will overwrite data in these areas.
Initialization by setting the FPEFEQ parameter must be performed for both the erasing
program and the programming program. Initialization must be executed for both entry
addresses: (download start address for erasing program) + 32 bytes (H'FFB020 in this
example) and (download start address for programming program) + 32 bytes (H'FFC020 in
this example).
User Boot Mode