HD64F2612FA20 Renesas Electronics America, HD64F2612FA20 Datasheet - Page 115
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HD64F2612FA20
Manufacturer Part Number
HD64F2612FA20
Description
IC H8S MCU FLASH 128K 80QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2612FA20
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
43
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 12x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
80-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F2612FA20
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
HD64F2612FA20J
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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5.6
The interrupt controller has two modes: interrupt control mode 0 and interrupt control mode 2.
Interrupt operations differ depending on the interrupt control mode. The interrupt control mode is
selected by SYSCR. Table 5.3 shows the differences between interrupt control mode 0 and
interrupt control mode 2.
Table 5.3
Interrupt Control
Mode
0
2
5.6.1
In interrupt control mode 0, interrupt requests other than for NMI are masked by the I bit of the
CCR in the CPU. Figure 5.3 shows a flowchart of the interrupt acceptance operation in this case.
1. If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an
2. If the I bit is set to 1, only an NMI interrupt is accepted, and other interrupt requests are held
3. Interrupt requests are sent to the interrupt controller, the highest-ranked interrupt according to
4. When the CPU accepts an interrupt request, it starts interrupt exception handling after
5. The PC and CCR are saved to the stack area by interrupt exception handling. The PC saved on
6. Next, the I bit in CCR is set to 1. This masks all interrupts except NMI.
interrupt request is sent to the interrupt controller.
pending. If the I bit is cleared, an interrupt request is accepted.
the priority system is accepted, and other interrupt requests are held pending.
execution of the current instruction has been completed.
the stack shows the address of the first instruction to be executed after returning from the
interrupt handling routine.
Interrupt Control Modes and Interrupt Operation
Interrupt Control Mode 0
Interrupt Control Modes
Priority Setting
Registers
Default
IPR
Interrupt
Mask Bits
I
I2 to I0
Description
The priorities of interrupt sources are fixed at the
default settings.
Interrupt sources, except for NMI, are masked
by the I bit.
8 priority levels other than NMI can be set with
IPR.
8-level interrupt mask control is performed by
bits I2 to I0.
Rev. 7.00 Sep. 11, 2009 Page 79 of 566
Section 5 Interrupt Controller
REJ09B0211-0700
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