DF2398TE20 Renesas Electronics America, DF2398TE20 Datasheet - Page 129
![IC H8S MCU FLASH 256K 120TQFP](/photos/28/61/286120/120-tqfp_sml.jpg)
DF2398TE20
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
HD64F2398TE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2398TE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 129 of 1049
- Download datasheet (5Mb)
5.5
5.5.1
When an interrupt enable bit is cleared to 0 to disable interrupts, the disabling becomes effective after execution of the
instruction.
In other words, when an interrupt enable bit is cleared to 0 by an instruction such as BCLR or MOV, if an interrupt is
generated during execution of the instruction, the interrupt concerned will still be enabled on completion of the instruction,
and so interrupt exception handling for that interrupt will be executed on completion of the instruction. However, if there
is an interrupt request of higher priority than that interrupt, interrupt exception handling will be executed for the higher-
priority interrupt, and the lower-priority interrupt will be ignored.
The same also applies when an interrupt source flag is cleared.
Figure 5-8 shows an example in which the TGIEA bit in the TPU’s TIER0 register is cleared to 0.
The above contention will not occur if an enable bit or interrupt source flag is cleared to 0 while the interrupt is masked.
5.5.2
Instructions that disable interrupts are LDC, ANDC, ORC, and XORC. After any of these instructions is executed, all
interrupts including NMI are disabled and the next instruction is always executed. When the I bit is set by one of these
instructions, the new value becomes valid two states after execution of the instruction ends.
Usage Notes
Contention between Interrupt Generation and Disabling
Instructions that Disable Interrupts
Internal
address bus
Internal
write signal
TGIEA
TGFA
TGI0A
interrupt signal
ø
Figure 5-8 Contention between Interrupt Generation and Disabling
TIER0 write cycle by CPU
TIER0 address
TGI0A exception handling
Rev.6.00 Oct.28.2004 page 99 of 1016
REJ09B0138-0600H
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