W78E52C/W78E052C Data Sheet

8-BIT MICROCONTROLLER

Publication Release Date: November 6, 2006

- 1 -

Revision A4

Table of Contents-

1.

GENERAL DESCRIPTION ......................................................................................................... 2

2.

FEATURES ................................................................................................................................. 2

3.

PIN CONFIGURATIONS ............................................................................................................ 3

4.

PIN DESCRIPTION..................................................................................................................... 4

5.

FUNCTIONAL DESCRIPTION ................................................................................................... 5

5.1

Timers 0, 1, and 2 ........................................................................................................... 5

5.2

New Defined Peripheral.................................................................................................. 5

5.3

Watchdog Timer ............................................................................................................. 7

5.4

Clock ............................................................................................................................... 9

5.5

Power Management........................................................................................................ 9

5.6

Reset............................................................................................................................... 9

6.

SECURITY BITS ....................................................................................................................... 10

6.1

Lock Bit ......................................................................................................................... 10

6.2

MOVC Inhibit................................................................................................................. 10

6.3

Encryption ..................................................................................................................... 10

7.

ELECTRICAL CHARACTERISTICS......................................................................................... 11

7.1

Absolute Maximum Ratings .......................................................................................... 11

7.2

D.C. Characteristics...................................................................................................... 11

7.3

A.C. Characteristics ...................................................................................................... 13

8.

TIMING WAVEFORMS ............................................................................................................. 16

8.1

Program Fetch Cycle .................................................................................................... 16

8.2

Data Read Cycle........................................................................................................... 16

8.3

Data Write Cycle ........................................................................................................... 17

8.4

Port Access Cycle......................................................................................................... 17

9.

TYPICAL APPLICATION CIRCUITS ........................................................................................ 18

9.1

Expanded External Program Memory and Crystal ....................................................... 18

9.2

Expanded External Data Memory and Oscillator ......................................................... 19

10.

PACKAGE DIMENSIONS ......................................................................................................... 20

10.1

40-pin DIP ..................................................................................................................... 20

10.2

44-pin PLCC ................................................................................................................. 20

10.3

44-pin PQFP ................................................................................................................. 21

11.

REVISION HISTORY ................................................................................................................ 22