HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 540

• 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: -

Section 17 Flash Memory [H8/3026F-ZTAT Version]
Rev. 2.00 Sep 20, 2005 page 500 of 800
REJ09B0260-0200
Notes: 1. Do not apply a constant high level to the FWE pin. A high level should be applied to the
2. For further information on FWE application and disconnection, see section 17.11, Flash
3. In order to execute a normal read of flash memory in user program mode, the
FWE pin only when programming or erasing flash memory (including execution of flash
memory emulation by RAM). Also, while a high level is applied to the FWE pin, the
watchdog timer should be activated to prevent overprogramming or overerasing due to
program runaway, etc.
Memory Programming and Erasing Precautions.
programming/erase program must not be executing. It is thus necessary to ensure that
bits 6 to 0 in FLMCR1 are cleared to 0.
Figure 17.8 Example of User Program Mode Execution Procedure
Write FWE assessment program and transfer
program (and programming/erase control
program if necessary) beforehand
Branch to programming/erase control
Transfer programming/erase control
Execute programming/erase control
Clear SWE bit, then release FWE
Branch to application program
(user program mode clearing)
(flash memory rewriting)
MD
program in RAM area
(user program mode)
2
program to RAM
program in RAM
in flash memory
–MD
FWE = high
Reset-start
0
= 101 or 111