HT13R90

40-Bit Programmable Timer

Block Diagram

Pin Assignment

Rev. 1.10

1

July 10, 2007

Features

maximum time of over one year

mode and single pulse mode)

oscillator with quick startup circuit.

setting.

General Description

The HT13R90 is a programmable timer, whose timing is

controlled by a 40bit counter. Providing a long bit coun-

ter enables long timer values of over one year to be pro-

grammed. When added to its other features, which

include multi-preloadable values, varied output wave-

form combinations and OTP configuration option set-

tings, give the device a flexibility making it suitable for a

wide range of product timing applications.

T i m i n g

G e n e r a t o r

R E S E T

1 8 - B i t P r e s c a l e r

( P C R 1 )

1 9 - 1 M U X

T M R 0

O S C 1

O S C 2

S T D _ B Y

C T _ S T P

P C R 0 M 0

P C R 0 M 1

P C R 0 M 2

7 - 1 M U X

6 - B i t P r e s c a l e r

( P C R 0 )

P C R 1 M 0

~

P C R 1 M 4

8 - B i t T i m e r

( T M R 0 )

T M R 0 _ O V

T M R 0 _ O V / 2 ~ T M R 0 _ O V / 2 5 6

8 - B i t T i m e r

( T M R 1 )

T M R 1 _ O V

2 - 1 M u x

( 8 - B i t )

T M R 1 A

T M R 1 B

T M R 0 _ O V / x

L x _ O p t

O x O P T

L E D 0 / O U T 0

L E D 1 / O U T 1 / B Z

L E D 2 / O U T 2 / B Z

T M R 1 _ O V

T M R 0 _ O V

S T D _ B Y

C T _ S T P

C T _ C L R

O U T &

L E D &

F l o w

C o n t r o l

1

2

3

4

8

7

6

5

H T 1 3 R 9 0

8 D I P - A / S O P - A

L E D 1 / O U T 1 / B Z

L E D 2 / O U T 2 / B Z

L E D 0 / O U T 0

V S S

R E S E T

O S C 1

O S C 2

V D D