6

1

3

2

7

SENSE

≥1

≥1

≥1

RESET

5

COMP

S

VIT

S<VIT

Z1

Z2

Z3

RESIN

CT

CONTROL

RESET

3

2

1

1

CX

×

TLC7701-EP, TLC7705-EP, TLC7733-EP

SGLS013E

– MARCH 2003 – REVISED NOVEMBER 2011

www.ti.com

In addition to the power-on reset and undervoltage-supervisor function, the TLC77xx adds power-down control

support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor

contains additional logic intended for control of static memories with battery backup during power failure. By

driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL

driven by the memory bank select signal (CSH1) of the microprocessor (see Figure 11), the memory circuit is

automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the

battery.)

ORDERING INFORMATION

ORDERABLE PART

TOP-SIDE

TA

PACKAGE(1)

VID NUMBER

NUMBER

MARKING

TLC7701QPWREP

7701QE

V62/04604 - 01XE

-40

°C to 125°C

TSSOP - PW

Tape and reel

TLC7705QPWREP

7705QE

V62/04604 - 02XE

TLC7733QPWREP

7733QE

V62/04604 - 03XE

TLC7701MPWREP

7701ME

V62/04604 - 04XE

TSSOP - PW

Tape and reel

-55

°C to 125°C

TLC7733MPWREP

7733ME

V62/04604 - 06XE

SOIC - D

Tape and reel

TLC7701MDREP

7701ME

V62/04604 - 04YE

(1)

The PW package is only available left-end taped and reeled (indicated by the R suffix on the device type; e.g., TLC7701QPWREP).

Table 1. FUNCTION TABLE

CONTROL

RESIN

VI(SENSE) > VIT+

RESET

RESET

L

L

False

H

L

L

L

True

H

L

L

H

False

H

L

L

H

True

L(1)

H(1)

H

L

False

H

L

H

L

True

H

L

H

H

False

H

L

H

H

True

H

H(1)

(1)

RESET and RESET states shown are valid for t

> td.

(1)

This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Figure 1. Logic Symbol

2

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Product Folder Link(s): TLC7701-EP TLC7705-EP TLC7733-EP