HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 561

• 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: -

3. FWE application/disconnection
FWE application should be carried out when MCU operation is in a stable condition. If MCU
operation is not stable, fix the FWE pin low and set the protection state.
The following points must be observed concerning FWE application and disconnection to
prevent unintentional programming or erasing of flash memory:
• Apply FWE when the V
• Apply FWE when oscillation has stabilized (after the elapse of the oscillation settling
• In boot mode, apply and disconnect FWE during a reset.
• In user program mode, FWE can be switched between high and low level regardless of
• Do not apply FWE if program runaway has occurred.
• Disconnect FWE only when the SWE, ESU, PSU, EV, PV, E, and P bits in FLMCR1 are
If FWE is applied when the MCU’s V
MCU operation will be unstable and flash memory may be erroneously programmed or
erased.
time).
When V
settling time before applying FWE. Do not apply FWE when oscillation has stopped or is
unstable.
In a transition to boot mode, FWE = 1 input and MD
while the
programming setup time (t
transition from boot mode to another mode, also, a mode programming setup time is
necessary with respect to the reset release timing.
In a reset during operation, the
clock cycles.
R E S
FWE input can also be switched during execution of a program in flash memory.
During FWE application, the program execution state must be monitored using the
watchdog timer or some other means.
cleared.
Make sure that the SWE, ESU, PSU, EV, PV, E, and P bits are not set by mistake when
applying or disconnecting FWE.
input.
CC
R E S
power is turned on, hold the
input is low. FWE and MD
CC
MDS
voltage has stabilized within its rated voltage range.
) with respect to the reset release timing. When making a
R E S
pin must be held low for a minimum of 20 system
CC
Section 17 Flash Memory [H8/3026F-ZTAT Version]
R E S
power supply is not within its rated voltage range,
2
–MD
pin low for the duration of the oscillation
0
pin input must satisfy the mode
Rev. 2.00 Sep 20, 2005 page 521 of 800
2
–MD
0
setting should be performed
REJ09B0260-0200