HT82K74E datasheet(31/56 Pages) HOLTEK

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HT82K74E/HT82K74EE

Rev. 1.00

December 15, 2009

W S 2

W D T S R e g i s t e r

b 7

b 0

W D T p r e s c a l e r r a t e s e l e c t

W S 2

W S 1

W S 0

W D T R a t e

W D T i s d i s a b l e d

1 : 1

1 : 4

1 : 8

1 : 1 6

1 : 3 2

1 : 6 4

1 : 1 2 8

N o t u s e d

W S 1 W S 0

Watchdog Timer Register

Bit No.

MCU Name

Fun. Name

R/W

Description for mouse mode

0~2

PF0~PF2

Reserved bit

Always read 0

PF3

VA_wakeup

1: VA change before VB

0: default

PF4

VB_wakeup

1: VB change before VA

0: default

PF5

CNT_WK

1: MCU wake-up by period counter overflow

0: MCU Wake-up not by period counter

PF6

ZA_wakeup

1: ZA change before ZB

0: default

PF7

ZB_wakeup

1: ZB change before ZA

0: default

Wakeup Status Register

- WSR

6 - b i t C o u n t e r

7 - b i t P r e s c a l e r

8 - t o - 1 M U X

W D T T i m e - o u t

W S 0 ~ W S 2

C L R W D T F l a g

C L R

W D T O s c i l l a t o r

Watchdog Timer Register

HT82K74E Datasheet(PDF) 31 Page - Holtek Semiconductor Inc

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