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W78L516A

8-BIT MICROCONTROLLER

Winbond 

W78LE516/W78L516A Data Sheet

8-BIT MICROCONTROLLER

Table of Contents-

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

2. FEATURES ................................................................................................................................. 3

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

4. PIN DESCRIPTION..................................................................................................................... 6

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

5.1 RAM ................................................................................................................................ 7

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

5.3 Clock ............................................................................................................................... 8

5.4 Crystal Oscillator............................................................................................................. 8

5.5 External Clock................................................................................................................. 8

5.6 Power Management........................................................................................................ 8

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

5.8 Reset............................................................................................................................... 9

5.9 Port 4 ............................................................................................................................ 10

5.10 INT2 / INT3 ................................................................................................................... 10

5.11 Port 4 Base Address Registers .................................................................................... 12

5.12 In-System Programming (ISP) Mode............................................................................ 14

5.13 In-System Programming Control Register (CHPCON)................................................. 16

6. SECURITY ................................................................................................................................ 20

6.1 Lock bit.......................................................................................................................... 20

6.2 MOVC Inhibit................................................................................................................. 20

6.3 Encryption ..................................................................................................................... 21

6.4 Oscillator Control .......................................................................................................... 21

7. ELECTRICAL CHARACTERISTICS......................................................................................... 22

7.1 Absolute Maximum Ratings .......................................................................................... 22

7.2 D.C. Characteristics...................................................................................................... 22

7.3 A.C. Characteristics ...................................................................................................... 24

8. TIMING WAVEFORMS ............................................................................................................. 26

8.1 Program Fetch Cycle .................................................................................................... 26

8.2 Data Read Cycle........................................................................................................... 26

8.3 Data Write Cycle ........................................................................................................... 27

8.4 Port Access Cycle......................................................................................................... 27

Publication Release Date: November 6, 2006

-1-

Revision A7

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