DF3026X25V Renesas Electronics America, DF3026X25V Datasheet - Page 147
![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
- Current page: 147 of 843
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5.5
5.5.1
When an instruction clears an interrupt enable bit to 0 to disable the interrupt, the interrupt is not
disabled until after execution of the instruction is completed. If an interrupt occurs while a BCLR,
MOV, or other instruction is being executed to clear its interrupt enable bit to 0, at the instant
when execution of the instruction ends the interrupt is still enabled, so its interrupt exception
handling is carried out. If a higher-priority interrupt is also requested, however, interrupt exception
handling for the higher-priority interrupt is carried out, and the lower-priority interrupt is ignored.
This also applies to the clearing of an interrupt flag to 0.
Figure 5.8 shows an example in which an IMIEA bit is cleared to 0 in the 16-bit timer’s TISRA
register.
This type of contention will not occur if the interrupt is masked when the interrupt enable bit or
flag is cleared to 0.
Internal
address bus
Internal
write signal
IMIEA
IMIA
IMFA interrupt
signal
Figure 5.8 Contention between Interrupt and Interrupt-Disabling Instruction
Usage Notes
Contention between Interrupt and Interrupt-Disabling Instruction
TISRA write cycle by CPU
TISRA address
Rev. 2.00 Sep 20, 2005 page 107 of 800
IMIA exception handling
Section 5 Interrupt Controller
REJ09B0260-0200
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