HD64F3644H Renesas Electronics America, HD64F3644H Datasheet - Page 94
HD64F3644H
Manufacturer Part Number
HD64F3644H
Description
IC H8 MCU FLASH 32K 64-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Lr
Datasheet
1.HD64F3644HV.pdf
(551 pages)
Specifications of HD64F3644H
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-QFP
Package
64PQFP
Family Name
H8
Maximum Speed
8 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
45
Interface Type
SCI
On-chip Adc
8-chx8-bit
Number Of Timers
4
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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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.
Rev. 6.00 Sep 12, 2006 page 72 of 526
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
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