MC33064/MC34064

PRODUCT DA T ABOOK 1996/1997

Copyright © 1999

Rev. 1.3

6/99

10

TYPICAL APPLICA TION CIRCUITS

(Cont'd.)

FIGURE 19. — LOW VOLTAGE MICROPROCESSOR RESET

with ADDITIONAL HYSTERESIS

Comparator hysteresis can be increased with the addition of resistor R

The

hysteresis equation has been simplified and does not account for the change of

input current I

An increase of the

lower threshold

∆V

4.59V. The equations are accurate to ±10% with R

between 1.5k

Ω and 10kΩ.

V

+ 0.02

∆V

-6

Where: R

R

4.6 R

H

R

L

TEST DATA

V

H

∆V

TH

R

H

R

L

(mV) (mV)

(

Ω)(Ω)

20

000

51

3.4101.5

40

6.8204.7

81

6.8201.5

71

10

30

2.7

112

10

30

1.5

100

16

47

2.7

164

16

47

1.5

190

34

100

2.7

327

34

100

1.5

276

51

150

2.7

480

51

150

1.5

FIGURE 20. — SOLAR POWERED BATTERY CHARGER

1.2 V

REF

MICROPROCESSOR

CIRCUIT

RESET

V

IN

POWER

SUPPLY

R

L

R

H

I

IN

1.2 V

REF

RESET

V

IN

SOLAR

CELLS

PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document

may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of

all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.