W78IE52/W78I052A

8-BIT MICROCONTROLLER

Publication Release Date: October 2, 2006

- 1 -

Revision A4

Table of Contents -

1.

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

2.

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

3.

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

4.

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

5.

FUNCTIONAL DESCRIPTION ................................................................................................... 6

5.1

Timers 0, 1, and 2 ........................................................................................................... 6

5.2

New Defined Peripheral.................................................................................................. 6

5.2.1

5.2.2

PORT4 .........................................................................................................................7

5.2.3

Reduce EMI Emission ..................................................................................................7

5.2.4

Power-off Flag ..............................................................................................................8

5.3

Watchdog Timer ............................................................................................................. 8

5.3.1

Watchdog Timer Control Register ................................................................................8

5.4

Clock ............................................................................................................................. 10

5.5

Power Management...................................................................................................... 10

5.5.1

Idle Mode....................................................................................................................10

5.5.2

Power-down Mode......................................................................................................10

5.6

Reset............................................................................................................................. 10

6.

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

6.1

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

6.2

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

6.3

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

6.4

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

6.5

Erase Operation............................................................................................................ 11

6.6

Erase Verify Operation ................................................................................................. 11

6.7

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

7.

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

7.1

Lock bit.......................................................................................................................... 13

7.2

MOVC Inhibit................................................................................................................. 14

7.3

Encryption ..................................................................................................................... 14

8.

ABSOLUTE MAXIMUM RATINGS ........................................................................................... 14

9.

DC CHARACTERISTICS .......................................................................................................... 15

10.

AC CHARACTERISTICS .......................................................................................................... 16