HD64F3048F16 Renesas Electronics America, HD64F3048F16 Datasheet - Page 143
HD64F3048F16
Manufacturer Part Number
HD64F3048F16
Description
IC H8 MCU FLASH 128K 100QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of HD64F3048F16
Core Processor
H8/300H
Core Size
16-Bit
Speed
8MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
70
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K 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
100-QFP
Package
100PQFP
Family Name
H8
Maximum Speed
16 MHz
Operating Supply Voltage
5 V
Data Bus Width
16|32 Bit
Number Of Programmable I/os
70
Interface Type
SCI
On-chip Adc
8-chx10-bit
On-chip Dac
2-chx8-bit
Number Of Timers
5
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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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.
Figure 5.8 shows an example in which an IMIEA bit is cleared to 0 in TIER of the ITU.
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
TIER write cycle by CPU
TIER address
Rev. 7.00 Sep 21, 2005 page 117 of 878
IMIA exception handling
Section 5 Interrupt Controller
REJ09B0259-0700
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