DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 633

• Manufacturer Part Number: DF2398TE20
• Description: IC H8S MCU FLASH 256K 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398TE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2398TE20; HD64F2398TE20

19.12
All interrupts, including NMI interrupt is disabled when flash memory is being programmed or erased (when the P or E bit
is set in FLMCR1), and while the boot program is executing in boot mode*
operation. There are three reasons for this:
1. Interrupt during programming or erasing might cause a violation of the programming or erasing algorithm, with the
2. In the interrupt exception handling sequence during programming or erasing, the vector would not be read correctly*
3. If interrupt occurred during boot program execution, it would not be possible to execute the normal boot mode
For these reasons, in on-board programming mode alone there are conditions for disabling interrupt, as an exception to the
general rule. However, this provision does not guarantee normal erasing and programming or MCU operation. All
requests, including NMI interrupt, must therefore be restricted inside and outside the MCU when programming or erasing
flash memory. NMI interrupt is also disabled in the error-protection state while the P or E bit remains set in FLMCR1.
Notes: 1. Interrupt requests must be disabled inside and outside the MCU until the programming control program has
result that normal operation could not be assured.
possibly resulting in MCU runaway.
sequence.
2. The vector may not be read correctly in this case for the following two reasons:
Interrupt Handling when Programming/Erasing Flash Memory
completed programming.
•
•
If flash memory is read while being programmed or erased (while the P or E bit is set in FLMCR1), correct
read data will not be obtained (undetermined values will be returned).
If the interrupt entry in the vector table has not been programmed yet, interrupt exception handling will not
be executed correctly.
1
, to give priority to the program or erase
Rev.6.00 Oct.28.2004 page 603 of 1016
REJ09B0138-0600H
2
,