EM78P447NAM datasheet(20/57 Pages) EMC | 8-BIT MICRO-CONTROLLER

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EM78P447NAM Datasheet(PDF) 20 Page - ELAN Microelectronics Corp

Part #	EM78P447NAM

Description	8-BIT MICRO-CONTROLLER

Download	57 Pages

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Manufacturer	EMC [ELAN Microelectronics Corp]

Direct Link	http://www.emc.com.tw

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EM78P447N

OTP ROM

IOW

RB

MOV

A, @ xx01xxx1b ; Disable WDT

IOW

RE

Note:

After waking up from the SLEEP2 mode, WDT is automatically enabled. The WDT enabled/disabled

operation after waking up from SLEEP2 mode should be appropriately defined in the software.

To avoid reset from occurring when the port6 status changed interrupt enters into interrupt vector or is

used to wake-up the MCU, the WDT prescaler must be set above 1:1 ratio.

Table 4 The Summary of the Initialized Values for Registers

Address

Name

Reset Type

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit Name

C57

C56

C55

C54

C53

C52

C51

C50

Type

A

B

A

B

A

B

A

B

-

-

-

-

N/A

IOC5

Power-On

0

1

0

1

0

1

0

1

1

1

1

1

/RESET and WDT

0

1

0

1

0

1

0

1

1

1

1

1

Wake-Up from Pin

Change

0

P

0

P

0

P

0

P

P

P

P

P

Bit Name

C67

C66

C65

C64

C63

C62

C61

C60

N/A

IOC6

Power-On

1

1

1

1

1

1

1

1

/RESET and WDT

1

1

1

1

1

1

1

1

Wake-Up from Pin

Change

P

P

P

P

P

P

P

P

Bit Name

C77

C76

C75

C74

C73

C72

C71

C70

N/A

IOC7

Power-On

1

1

1

1

1

1

1

1

/RESET and WDT

1

1

1

1

1

1

1

1

Wake-Up from Pin

Change

P

P

P

P

P

P

P

P

Bit Name

/PHEN

/INT

TS

TE

PAB PSR2 PSR1 PSR0

N/A

CONT

Power-On

1

0

1

1

1

1

1

1

/RESET and WDT

1

P

1

1

1

1

1

1

Wake-Up from Pin

Change

P

P

P

P

P

P

P

P

Bit Name

-

-

-

-

-

-

-

-

0x00

R0(IAR)

Power-On

U

U

U

U

U

U

U

U

/RESET and WDT

P

P

P

P

P

P

P

P

Wake-Up from Pin

Change

P

P

P

P

P

P

P

P

Bit Name

-

-

-

-

-

-

-

-

0x01

R1(TCC)

Power-On

0

0

0

0

0

0

0

0

/RESET and WDT

0

0

0

0

0

0

0

0

Wake-Up from Pin

Change

P

P

P

P

P

P

P

P

Bit Name

-

-

-

-

-

-

-

-

0x02

R2(PC)

Power-On

1

1

1

1

1

1

1

1

/RESET and WDT

1

1

1

1

1

1

1

1

Wake-Up from Pin

Change

**0/P

**0/P

**0/P

**0/P

**0/P **0/P **0/P **0/P

Bit Name

GP

PS1

PS0

T

P

Z

DC

C

This specification is subject to change without prior notice.

10.21.2004 (V1.0)

20

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