DF3026X25V Renesas Electronics America, DF3026X25V Datasheet - Page 558
![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]
17.9
All interrupts, including NMI input, should be disabled while flash memory is being programmed
or erased (while the P bit or E bit is set in FLMCR1), and while the boot program is executing in
boot mode *
1. NMI input during programming or erasing might cause a violation of the programming or
2. In the NMI exception handling sequence during programming or erasing, the vector would not
3. If NMI input occurred during boot program execution, it would not be possible to execute the
For these reasons, in on-board programming mode alone there are conditions for disabling NMI
input, as an exception to the general rule. However, this provision does not guarantee normal
erasing and programming or MCU operation. All interrupt requests (exception handling and bus
release), including NMI, must therefore be restricted inside and outside the MCU during FWE
application. NMI input is also disabled in the error protection state and while the P or E bit
remains set in FLMCR1 during flash memory emulation in RAM.
Notes: 1. This is the interval until a branch is made to the boot program area in the on-chip RAM
Rev. 2.00 Sep 20, 2005 page 518 of 800
REJ09B0260-0200
erasing algorithm, with the result that normal operation could not be assured.
be read correctly *
normal boot mode sequence.
2. The vector may not be read correctly in this case for the following two reasons:
NMI Input Disabling Conditions
(This branch takes place immediately after transfer of the user program is completed).
Consequently, after the branch to the RAM area, NMI input is enabled except during
programming and erasing. Interrupt requests must therefore be disabled inside and
outside the MCU until the user program has completed initial programming (including
the vector table and the NMI interrupt handling routine).
• If flash memory is read while being programmed or erased (while the P bit or E bit
• If the entry in the interrupt vector table has not been programmed yet, interrupt
1
, to give priority to the program or erase operation. There are three reasons for this:
is set in FLMCR1), correct read data will not be obtained (undetermined values will
be returned).
exception handling will not be executed correctly.
2
, possibly resulting in MCU runaway.
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