DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 109

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• 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): 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: Lead free / RoHS Compliant
• Eeprom Size: -

4.1
4.1.1
As table 4.1 indicates, exception handling may be caused by a reset, trap instruction, or interrupt.
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
Priority
High
Low
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.
starts from the address indicated in that address.
Exception Handling Types and Priority
Exception Handling Operation
Overview
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
RES pin
current instruction or handling of the current exception is
completed
Interrupt requests are handled when execution of the
Started by execution of a trap instruction (TRAPA)
Rev. 3.00 Sep 27, 2006 page 81 of 872
Section 4 Exception Handling
REJ09B0325-0300