W81E381D/W81E381AD

Publication Release Date: January 2002

- 3 -

Revision 0.52

TABLE OF CONTENTS

1. General Descriptions: .........................................................................................................................................5

2. FEATURES: .......................................................................................................................................................6

3. PIn configuration ...............................................................................................................................................7

3.1 W81E381D 48-pin LQFP PINOUT............................................................................................................7

3.2 W81E381AD 100-pin LQFP PINOUT .....................................................................................................10

4. Programming interface.....................................................................................................................................13

4.1 Register map ..............................................................................................................................................13

4.2 FLASH Category – Descriptions Summary ............................................................................................14

4.3 SC Category - Descriptions Summary .....................................................................................................14

4.4 USB Category - Descriptions Summary...................................................................................................15

4.5 Individual register description .................................................................................................................16

4.5.1

Register Descriptions - USB Power Control Registers (E7)..........................................................16

4.5.2

Register Descriptions - USB Interrupt System SFRs (A2) ............................................................18

4.5.3

Register Descriptions - USB Interrupt System SFRs (C0) ............................................................19

4.5.4

Register Descriptions - USB Interrupt System SFRs (B1) ............................................................20

4.5.4

Register Descriptions - USB Interrupt System SFRs (B1) ............................................................20

4.5.5

Register Descriptions - USB Function SFRs (E1) .........................................................................21

4.5.6

Register Descriptions - USB Function SFRs (F1) .........................................................................23

4.5.7

Register Descriptions - USB Function SFRs (8F) .........................................................................24

4.5.8

Register Descriptions - USB Function SFRs (E6) .........................................................................26

4.5.9

Register Descriptions - USB Function SFRs (E4) .........................................................................27

4.5.10

Register Descriptions - USB Function SFRs (E3) .........................................................................28

4.5.11

Register Descriptions - USB Function SFRs (E5) .........................................................................30

4.5.12

Register Descriptions - USB Function SFRs (E2) .........................................................................32

4.5.13

Register Descriptions - USB Function SFRs (F6) .........................................................................34

4.5.14

Register Descriptions - USB Function SFRs (F4) .........................................................................35

4.5.15

Register Descriptions - USB Function SFRs (F3) .........................................................................36

4.5.16

Register Descriptions - USB Function SFRs (F5) .........................................................................38

4.5.17

Register Descriptions - USB Function SFRs (F2) .........................................................................40

4.5.18

Register Descriptions - USB Device SFRs (B7)............................................................................42

4.5.19

Register Descriptions - USB Device SFRs (BF)............................................................................43

4.5.20

Register Descriptions - SC Interrupt SFRs (AA)...........................................................................44

4.5.21

Register Descriptions - SC Interrupt SFRs (AB) ...........................................................................45

4.5.22

Register Descriptions - SC Control SFRs (A3)..............................................................................46

4.5.24

Register Descriptions - SC Control SFRs (AC).............................................................................47

4.5.25

Register Descriptions - SC Control SFRs (AD).............................................................................48

4.5.26

Register Descriptions - SC Control SFRs (AE, A4) ......................................................................49

4.5.27

Register Descriptions - SC Control SFRs (A5)..............................................................................50

4.5.28

Register Descriptions - SC Data SFRs (A6, A7) ...........................................................................51

4.5.29

Register Descriptions – ISP Registers (C4, C5).............................................................................52

4.5.30

Register Descriptions – ISP Registers (C6, C7).............................................................................53