DF3026X25V Renesas Electronics America, DF3026X25V Datasheet - Page 554
![MCU 3V 256K PB-FREE 100-TQFP](/photos/28/61/286123/100-tqfp__100-vqfp_sml.jpg)
DF3026X25V
Manufacturer Part Number
DF3026X25V
Description
MCU 3V 256K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3026X25V
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
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3026X25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 17 Flash Memory [H8/3026F-ZTAT Version]
The error protection function is invalid for abnormal operations other than the FLER bit setting
conditions. Also, if a certain time has elapsed before this protection state is entered, damage may
already have been caused to the flash memory. Consequently, this function cannot provide
complete protection against damage to flash memory.
To prevent such abnormal operations, therefore, it is necessary to ensure correct operation in
accordance with the program/erase algorithm, with the flash write enable (FWE) voltage applied,
and to conduct constant monitoring for MCU errors, internally and externally, using the watchdog
timer or other means. There may also be cases where the flash memory is in an erroneous
programming or erroneous erasing state at the point of transition to this protection mode, or where
programming or erasing is not properly carried out because of an abort. In cases such as these, a
forced recovery (program rewrite) must be executed using boot mode. However, it may also
happen that boot mode cannot be normally initiated because of overprogramming or overerasing.
Rev. 2.00 Sep 20, 2005 page 514 of 800
REJ09B0260-0200
RD: Memory read possible
VF:
PR: Programming possible
ER: Erasing possible
(When High Level is Applied to FWE Pin in Mode 5 or 7 (On-Chip ROM Enabled))
RD VF PR ER FLER = 0
Verify-read possible
Program mode
Erase mode
RD VF PR ER FLER = 1
Error
occurrence
Error protection mode
Figure 17.12 Flash Memory State Transitions
Error occurrence
(software standby)
RD: Memory read not possible
VF:
PR: Programming not possible
ER: Erasing not possible
INIT: Register initialization state
RES = 0 or STBY = 0
Software
standby mode
Software standby
mode release
Verify-read not possible
RES = 0 or
STBY = 0
RD VF PR ER INIT FLER = 1
RES = 0 or
STBY = 0
Error protection mode
FLMCR1, EBR1, EBR2
initialization state
RD VF PR ER INIT FLER = 0
(software standby)
(hardware protection)
Reset or standby
FLMCR1, FLMCR2,
EBR1, EBR2
initialization state
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