HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 583

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: Contains lead / RoHS non-compliant
• Eeprom Size: -

18.4.2
Example of Boot Mode Operation
1. Initial state
3. Flash memory initialization
On-Board Programming Modes
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.
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
H8/3024F-ZTAT version
H8/3024F-ZTAT version
prewrite-erase
Flash memory
Flash memory
Flash memory
Boot program
Boot program
(old version)
Application
program
Programming control
New application
New application
program
program
program
Host
Host
Boot program area
Programming control
program
RAM
RAM
SCI
SCI
Section 18 Flash Memory [H8/3024F-ZTAT Version]
2. Programming control program transfer
4. Writing new application program
When boot mode is entered, the boot program
in the H8/3024F-ZTAT version (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.
An identification check is carried out to see if
the programming control program is compatible
with the H8/3024F-ZTAT version.
The programming control program transferred
from the host to RAM is executed, and the new
application program in the host is written into
the flash memory.
H8/3024F-ZTAT version
H8/3024F-ZTAT version
Rev. 2.00 Sep 20, 2005 page 543 of 800
New application
Flash memory
Flash memory
Boot program
Boot program
(old version)
Application
program
program
New application
program
Host
Host
Program execution state
Boot program area
Boot program area
Programming control
Programming control
program
program
RAM
RAM
REJ09B0260-0200
SCI
SCI