ELM329L
ELM329L Absolute Maximum Ratings
Storage Temperature....................... -65°C to +150°C
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.
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
ELM329L Electrical Characteristics
All values are for operation at 25°C. For more information, refer to note 1 below.
Characteristic
Minimum Typical Maximum Units
Conditions
Supply voltage, VDD
2.0
0.05
1.7
5.5
V
see note 2
VDD rate of rise
V/msec
V
see note 3
Brown-out reset voltage
A/D conversion time
Pin 18 wake pulse duration
IgnMon debounce time
1.8
7
1.9
AT RV to beginning of response
msec
128
50
µsec to wake from Low Power mode
msec
65
AT LP to PwrCtrl output time
1.0
2.0
sec
sec
LP ALERT to PwrCtrl output time
Measured from the end of the
command to the start of the ID
message (ELM329 v2.1)
Reset time
AT Z
AT WS
1000
2
msec
msec
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.
3. While the ELM329L is able to operate at lower voltages, the peripheral circuits may not. The MCP2551 and
MCP2561 CAN transceivers for example must have at least 4.0 volts.
ELM329L DSA
Elm Electronics – Circuits for the Hobbyist
7 of 87
www.elmelectronics.com
ELM [ ELM ELECTRONICS ]
