EM78P311SXSSLASHXJ datasheet(52/68 Pages) EMC

52 / 68 page

EM78P311N

8-Bit Microcontroller

•

Product Specification (V1.0) 10.02.2006

(This specification is subject to change without further notice)

General Purpose Registers

Address Name

Reset Type

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit Name

Power-on

/RESET and WDT time out

0x10

0x3F

R10

R3F

Wake-up from Sleep, Idle mode

Legend: “

×” = not used

“P”

= previous value before reset

“u”

= unknown or don’t care

“t”

= check Table 7

5.14.4 The Status of RST, T, and P of the Status Register

The values of T and P are used to verify the event that triggered the processor to wake

up. Table 7 shows the events that may affect the status of T and P.

Table 7. The Values of RST, T and P after a reset

Reset Type

Power on

/RESET during Operation mode

/RESET wake-up during Sleep mode

/RESET wake-up during Idle mode

WDT during Operation mode

WDT wake-up during Sleep mode

WDT wake-up during Idle mode

*P: Previous status before reset

Table 8 The Events that may affect the T and P Status

Event

Power on

WDTC instruction

WDT time-out

SLEP instruction

Wake-Up during Sleep mode

*P: Previous value before reset

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