DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 725

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(3)
Figure 18.17 shows the procedure for erasing the user MAT in user boot mode.
The difference between the erasing procedures in user program mode and user boot mode is the
memory MAT switching as shown in figure 18.17. For erasing the user MAT in user boot mode,
additional processing made by setting FMATS is required: switching from the user boot MAT to
the user MAT, and switching back to the user boot MAT after erasing completes.
User MAT Erasing in User Boot Mode
Note:
The MAT must be switched by FMATS to perform the erasing error processing in the user boot MAT.
Figure 18.17 Procedure for Erasing User MAT in User Boot Mode
JSR FTDAR setting + 32
Set SCO to 1 after initializing
VBR and execute download
and bus master operation
Select on-chip program
to be downloaded and
destination by FTDAR
Set the FPEFEQ and
procedure program
FUBRA parameters
specify download
Set FKEY to H'A5
Disable interrupts
Initialization
Clear FKEY to 0
other than CPU
Start erasing
DPFR = 0 ?
FPFR = 0 ?
1
Yes
Yes
Download error processing
Initialization error processing
No
No
User-boot-MAT
selection state
Section 18 Flash Memory (0.18-µm F-ZTAT Version)
No
than H'AA to select user MAT
Rev. 2.00 Jun. 28, 2007 Page 699 of 864
Set FMATS to value other
JSR FTDAR setting + 16
Set FMATS to H'AA to
select user boot MAT
Set FEBS parameter
procedure program
Set FKEY to H'A5
block erasing is
Clear FKEY to 0
End erasing
FPFR = 0 ?
completed?
Required
Erasing
1
Yes
Yes
Clear FKEY and erasing
No
error processing
REJ09B0341-0200
switchover
switchover
MAT
MAT