9-9

August 1997

ICM7213

One Second/One Minute

Timebase Generator

Features

• Guaranteed 2V Operation

• Very Low Current Consumption (Typ) . . . . 100

µA at 3V

• All Outputs TTL Compatible

• On Chip Oscillator Feedback Resistor

• Oscillator Requires Only 3 External components:

Fixed Capacitor, Trim Capacitor, and A Quartz Crystal

• Output Inhibit Function

• 4 Simultaneous Outputs: One Pulse/s, One Pulse/Min,

16Hz and Composite 1024 + 16 + 2Hz Outputs

• Test Speed-Up Provides Other Frequency Outputs

Description

The ICM7213 is a fully integrated micropower oscillator and

frequency divider with four buffered outputs suitable for inter-

facing with most logic families. The power supply may be

either a two battery stack (Ni-cad, alkaline, etc.) or a regular

power supply greater than 2V. Depending upon the state of

the

WIDTH,

INHIBIT,

and

TEST

inputs,

using

a

4.194304MHz crystal will produce a variety of output fre-

quencies including 2048Hz, 1024Hz, 34.133Hz, 16Hz, 1Hz,

The ICM7213 utilizes a very high speed low power metal

gate CMOS technology which uses 6.4V zeners between the

drains and sources of each transistor and also across the

supply terminals. Consequently, the ICM7213 is limited to a

(See Figure 9).

Pinout

ICM7213

(PDIP)

TOP VIEW

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

ICM7213IPD

-25 to 85

14 Ld PDIP

E14.3

WIDTH

OUT 3

INHIBIT

OSC OUT

OSC IN

N/C

OUT 4

OUT 2

OUT 1

TEST

N/C

N/C

1

2

3

4

5

6

7

14

13

12

11

10

9

8

File Number

3165.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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