HD6412350F20 Renesas Electronics America, HD6412350F20 Datasheet - Page 327
HD6412350F20
Manufacturer Part Number
HD6412350F20
Description
IC H8S MPU ROMLESS 5V 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of HD6412350F20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
87
Program Memory Type
ROMless
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
128-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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3.3
The exception-handling state is a transient state that occurs when the CPU alters the normal
processing flow due to a reset, interrupt, or trap instruction. The CPU fetches a start address
(vector) from the exception vector table and branches to that address.
3.3.1
Exception handling is performed for traces, resets, interrupts, and trap instructions. Table 3.1
indicates the types of exception handling and their priority. Trap instruction exception handling is
always accepted, in the program execution state.
Exception handling and the stack structure differ according to the interrupt control mode set in
SYSCR.
Table 3.1
Priority
High
Low
Notes: 1. Traces are enabled only in interrupt control modes 2 and 3. Trace exception-handling is
For details on interrupt control modes, exception sources, and exception handling, refer to the
relevant microcontroller hardware manual.
2. Interrupts are not detected at the end of the ANDC, ORC, XORC, and LDC instructions,
3. Trap instruction exception handling is always accepted, in the program execution state.
Types of Exception Handling and Their Priority
Exception-Handling State
Type of Exception
Reset
Trace
Interrupt
Trap instruction
not executed at the end of the RTE instruction.
or immediately after reset exception handling.
Exception Handling Types and Priority
Detection Timing
When TRAPA instruction
Synchronized with clock
End of instruction
execution or end of
exception-handling
sequence *
End of instruction
execution or end of
exception-handling
sequence *
is executed
1
2
Rev. 4.00 Feb 24, 2006 page 311 of 322
Start of Exception Handling
Exception handling starts
immediately when RES changes
from low to high
When the trace (T) bit is set to 1, the
trace starts at the end of the current
instruction or current exception-
handling sequence
When an interrupt is requested,
exception handling starts at the end
of the current instruction or current
exception-handling sequence
Exception handling starts when a
trap (TRAPA) instruction is
executed *
Section 3 Processing States
3
REJ09B0139-0400
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