HD64F3644PV Renesas Electronics America, HD64F3644PV Datasheet - Page 94

• Manufacturer Part Number: HD64F3644PV
• Description: IC H8/3644 MCU FLASH 32K 64SDIP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD64F3644PV

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-SDIP (0.750", 19.05mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 3 Exception Handling
3.3.4
There are 21 internal interrupts that can be requested by the on-chip peripheral modules. When a
peripheral module requests an interrupt, the corresponding bit in IRR1 or IRR2 is set to 1.
Recognition of individual interrupt requests can be disabled by clearing the corresponding bit in
IENR1 or IENR2 to 0. All these interrupts can be masked by setting the I bit to 1 in CCR. When
internal interrupt handling is initiated, the I bit is set to 1 in CCR. Vector numbers from 23 to 9 are
assigned to these interrupts. Table 3.2 shows the order of priority of interrupts from on-chip
peripheral modules.
3.3.5
Interrupts are controlled by an interrupt controller. Figure 3.2 shows a block diagram of the
interrupt controller. Figure 3.3 shows the flow up to interrupt acceptance.
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REJ09B0326-0600
External or
internal
interrupts
External
interrupts or
internal
interrupt
enable
signals
Interrupt Operations
Internal Interrupts
Figure 3.2 Block Diagram of Interrupt Controller
Interrupt controller
I
CCR (CPU)
Interrupt
request