M16C/62P View Datasheet(PDF) - Mitsumi

Part Name

Description

Manufacturer

M16C/62P

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Mitsumi 

Udenvdeelropment

Preliminary Specifications Rev.1.0

Specifications in this manual are tentative and subject to change.

1.11 Precautions for Flash Memory Version

Mitsubishi microcomputers

M16C / 62P Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

1.11.6.3 Interrupts

EW0 Mode

• Any interrupt which has a vector in the variable vector table can be used providing that its vector is

transferred into the RAM area.

_______

• The NMI and watchdog timer interrupts can be used because the FMR0 register and FMR1 regis-

ter are initialized when one of those interrupts occurs. The jump addresses for those interrupt

service routines should be set in the fixed vector table.

_______

Because the rewrite operation is halted when a NMI or watchdog timer interrupt occurs, the rewrite

program must be executed again after exiting the interrupt service routine.

• The address match interrupt cannot be used because the flash memory’s internal data is refer-

enced.

EW1 Mode

• Make sure that any interrupt which has a vector in the variable vector table or address match

interrupt will not be accepted during the auto program or auto erase period.

• Avoid using watchdog timer interrupts.

_______

• The NMI interrupt can be used because the FMR0 register and FMR1 register are initialized when

this interrupt occurs. The jump address for the interrupt service routine should be set in the fixed

vector table.

_______

Because the rewrite operation is halted when a NMI interrupt occurs, the rewrite program must be

executed again after exiting the interrupt service routine.

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