W78E54B/W78E054B Data Sheet

8-BIT MICROCONTROLLER

Publication Release Date: August 14, 2006

- 1 -

Revision A6

Table of Contents-

1.

GENERAL DESCRIPTION ......................................................................................................... 3

2.

FEATURES ................................................................................................................................. 3

3.

PIN CONFIGURATIONS ............................................................................................................ 4

4.

PIN DESCRIPTION..................................................................................................................... 5

5.

BLOCK DIAGRAM ...................................................................................................................... 6

6.

FUNCTIONAL DESCRIPTION ................................................................................................... 7

6.1

Timers 0, 1, and 2........................................................................................................... 7

6.2

New Defined Peripheral.................................................................................................. 7

6.2.1

6.2.2

PORT4 .............................................................................................................................8

6.2.3

Reduce EMI Emission ......................................................................................................8

6.3

Power-off Flag ................................................................................................................ 9

6.4

Watchdog Timer ............................................................................................................. 9

6.5

Clock ............................................................................................................................. 11

6.6

Power Management...................................................................................................... 11

6.7

Reset............................................................................................................................. 11

7.

ON-CHIP FLASH EPROM CHARACTERISTICS..................................................................... 11

7.1

Read Operation ............................................................................................................ 11

7.2

Output Disable Condition.............................................................................................. 11

7.3

Program Operation ....................................................................................................... 11

7.4

Program Verify Operation ............................................................................................. 12

7.5

Erase Operation............................................................................................................ 12

7.6

Erase Verify Operation ................................................................................................. 12

7.7

Program/Erase Inhibit Operation .................................................................................. 12

8.

SECURITY BITS ....................................................................................................................... 13

8.1

Lock Bit ......................................................................................................................... 13

8.2

MOVC Inhibit................................................................................................................. 13

8.3

Encryption ..................................................................................................................... 13

9.

ELECTRICAL CHARACTERISTICS......................................................................................... 14

9.1

Absolute Maximum Ratings .......................................................................................... 14

9.2

D.C. Characteristics...................................................................................................... 14

9.3

A.C. Characteristics ...................................................................................................... 16