HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 111

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

4.1
4.1.1
As table 4.1 indicates, exception handling may be caused by a reset, interrupt, or trap instruction.
Exception handling is prioritized as shown in table 4.1. If two or more exceptions occur
simultaneously, they are accepted and processed in priority order. Trap instruction exceptions are
accepted at all times in the program execution state.
Table 4.1
4.1.2
Exceptions originate from various sources. Trap instructions and interrupts are handled as follows.
1. The program counter (PC) and condition code register (CCR) are pushed onto the stack.
2. The CCR interrupt mask bit is set to 1.
3. A vector address corresponding to the exception source is generated, and program execution
Note: For a reset exception, steps 2 and 3 above are carried out.
Priority
High
Low
starts from that address.
Overview
Exception Handling Types and Priority
Exception Handling Operation
Exception Type
Reset
Interrupt
Trap instruction
(TRAPA)
Exception Types and Priority
Section 4 Exception Handling
Start of Exception Handling
Starts immediately after a low-to-high transition at the
Interrupt requests are handled when execution of the current
instruction or handling of the current exception is completed
Started by execution of a trap instruction (TRAPA)
Rev. 2.00 Sep 20, 2005 page 71 of 800
Section 4 Exception Handling
REJ09B0260-0200
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