DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 607

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

18.2.3
Boot Mode
1. Initial state
3. Flash memory initialization
Note: Never apply 12 V to the H8/3048F-ONE (single power supply).
The old program version or data remains written
in the flash memory. The user should prepare the
programming control program and new
application program beforehand in the host.
H8/3048F-ONE
The erase program in the boot program area (in
RAM) is executed, and the flash memory is
initialized (to H'FF). In boot mode, total flash
memory erasure is performed, without regard to
blocks.
H8/3048F-ONE
On-Board Programming Modes
Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
Application program
Otherwise, the LSI will be permanently damaged.
preprogramming
Flash memory
Flash memory
Flash memory
Boot program
Boot program
(old version)
erase
Programming control
New application
New application
program
program
program
Host
Host
Boot program area
Programming control
program
RAM
RAM
SCI
SCI
2. Programming control program transfer
4. Writing new application program
H8/3048F-ONE
H8/3048F-ONE
When boot mode is entered, the boot program in
the H8/3048F-ONE (originally incorporated in the
chip) is started and the programming control
program in the host is transferred to RAM via SCI
communication. The boot program required for
flash memory erasing is automatically transferred
to the RAM boot program area.
The programming control program is recognized
if it corresponds to the H8/3048F-ONE.
The programming control program is then
transferred from the host to RAM is executed,
and the new application program in the host is
written into the flash memory.
Application program
New application
Flash memory
Flash memory
Rev. 3.00 Sep 27, 2006 page 579 of 872
Boot program
Boot program
(old version)
program
New application
program
Host
Host
Boot program area
Boot program area
Programming control
Programming control
Program execution state
program
program
RAM
RAM
REJ09B0325-0300
SCI
SCI