ELM327LP datasheet(7/94 Pages) ELM

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ELM327L Absolute Maximum Ratings

Storage Temperature....................... -65°C to +150°C

Ambient Temperature with

Power Applied....................................-40°C to +85°C

Voltage on VDD with respect to VSS..... -0.3V to +7.5V

Voltage on any other pin with

respect to VSS........................... -0.3V to (VDD + 0.3V)

Current through pins 3 or 4

(source or sink)...................................................2 mA

Current through all other output pins

(source or sink).................................................25 mA

Note:

These values are given as a design guideline only.

The ability to operate to these levels is neither

inferred nor recommended, and stresses beyond

those listed here will likely damage the device.

7 of 94

ELM327L DSA

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Notes:

1. This integrated circuit is based on Microchip Technology Inc.’s PIC18F25K80 device. For more detailed

device specifications, and possibly clarification of those given, please refer to the Microchip documentation

(available at www.microchip.com).

2. This spec must be met in order to ensure that a correct power on reset occurs. It is quite easily achieved

using most common types of supplies, but may be violated if one uses a slowly varying supply voltage, as

may be obtained through direct connection to solar cells or some charge pump circuits.

All values are for operation at 25°C. For more information, refer to note 1 below.

Characteristic

Minimum

Typical

Maximum

Conditions

Units

Supply voltage, VDD

2.0

5.5

VDD rate of rise

0.05

V/msec see note 2

AT RV to beginning of response

Brown-out reset voltage

1.7

1.8

1.9

A/D conversion time

msec

ELM327L

IgnMon debounce time

AT LP to PwrCtrl output time

LP ALERT to PwrCtrl output time

2.0

sec

msec

sec

1.0

Pin 18 wake pulse duration

µsec

128

to wake from Low Power mode

Reset time

AT Z

AT WS

msec

800

Measured from the end of the

command to the start of the ID

message (ELM327 v2.1)

ELM327L Electrical Characteristics

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