SST89E554RC View Datasheet(PDF) - Silicon Storage Technology

Part Name

Description

View to exact match

SST89E554RC

FlashFlex51 MCU

Silicon Storage Technology 

FlashFlex51 MCU

SST89E564RD / SST89V564RD / SST89E554RC / SST89V554RC

Preliminary Specifications

Interrupt Priority (IP)

Location

7

B8H

-

6

5

4

3

2

1

PPC

PT2

PS

PT1

PX1

PT0

Symbol

PPC

PT2

PS

PT1

PX1

PT0

PX0

Function

PCA interrupt priority bit.

Timer 2 interrupt priority bit.

Serial Port interrupt priority bit.

Timer 1 interrupt priority bit.

External interrupt 1 priority bit.

Timer 0 interrupt priority bit.

External interrupt 0 priority bit.

Interrupt Priority High (IPH)

Location

7

B7H

-

6

PPCH

5

PT2H

4

PSH

3

PT1H

2

PX1H

1

PT0H

Symbol

PPCH

PT2H

PSH

PT1H

PX1H

PT0H

PX0H

Function

PCA interrupt priority bit high.

Timer 2 interrupt priority bit high.

Serial Port interrupt priority bit high.

Timer 1 interrupt priority bit high.

External interrupt 1 priority bit high.

Timer 0 interrupt priority bit high.

External interrupt 0 priority bit high.

Interrupt Priority A (IPA)

Location

7

6

5

4

3

2

1

F8H

-

-

-

-

PBO

-

-

Symbol

PBO

Function

Brown-out interrupt priority bit.

Interrupt Priority A High (IPAH)

Location

7

6

5

4

3

2

1

F7H

-

-

-

-

PBOH

-

-

Symbol

PBOH

Function

Brown-out Interrupt priority bit high.

0

Reset Value

PX0

x0000000b

0

PX0H

Reset Value

x0000000b

0

Reset Value

-

xxxx0xxxb

0

Reset Value

-

xxxx0xxxb

©2001 Silicon Storage Technology, Inc.

19

S71207-00-000 9/01 555

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