DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 765

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• 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: 384KB (384K 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: -

The difference between the erasing procedures in user program mode and user boot mode depends
on whether the MAT is switched or not as shown in figure 20.15.
MAT switching is enabled by writing a specific value to FMATS. However note that while the
MATs are being switched, the LSI is in an unstable state, e.g. access to a MAT is not allowed until
MAT switching is completed, and if an interrupt occurs, from which MAT the interrupt vector is
read is undetermined. Perform MAT switching in accordance with the description in section 20.7,
Switching between User MAT and User Boot MAT.
Except for MAT switching, the erasing procedure is the same as that in user program mode.
The area that can be executed in the steps of the user procedure program (on-chip RAM and user
MAT) is shown in section 20.4.4, Procedure Program and Storable Area for Programming Data.
and bus master operation
JSR FTDAR setting + 32
Select on-chip program
Figure 20.15 Procedure for Erasing User MAT in User Boot Mode
Set the FPEFEQ and
Set FKEY to H'A5
Set SCO to 1 and
execute download
to be downloaded
FUBRA parameters
procedure program
Disable interrupts
Clear FKEY to 0
other than CPU
DPFR = 0 ?
Start erasing
Initialization
FPFR = 0 ?
1
Yes
Yes
Initialization error processing
Download error processing
No
No
User-boot-MAT
selection state
Note: The MAT must be switched by FMATS to perform
the erasing error processing in the user boot MAT.
No
than H'AA to select user MAT
JSR FTDAR setting + 16
Set FMATS to H'AA to
Set FMATS to value other
Rev. 6.00 Sep. 24, 2009 Page 717 of 928
select user boot MAT
Set FEBS parameter
procedure program
Set FKEY to H'A5
Clear FKEY to 0
block erasing is
Programming
End erasing
FPFR = 0 ?
completed?
Required
1
Yes
Yes
Clear FKEY and erasing
Section 20 Flash Memory
No
error processing
REJ09B0099-0600
switchover
switchover
MAT
MAT