ELM325
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 +6.5V
Voltage on any other pin with
respect to VSS........................... -0.3V to (VDD + 0.3V)
Electrical Characteristics
All values are for operation at 25°C and a 5V supply, unless otherwise noted. For further information, refer to note 1 below.
Characteristic
Supply voltage, VDD
VDD rate of rise
Minimum Typical Maximum Units
Conditions
1.8
5.0
5.5
2.0
V
0.05
V/ms see note 2
Average current, IDD
Output low current
1.2
8.0
mA
mA
mA
mA
mA
bps
bps
see note 3
VDD = 5.0V
VDD = 3.3V
VOUT = 0.6V max
VOUT = 0.6V max
VOUT = 4.3V min
VOUT = 2.6V min
6.0
Output high current
VDD = 5.0V
VDD = 3.3V
3.5
3.0
J1708 Baud Rate
RS232 Baud Rate
Reset time
9600
57600
900
0.75
AT Z
msec measured from the end of the
command to the start of the ID
message (ELM325 v1.0)
AT WS
msec
Notes:
1. This integrated circuit is based on Microchip Technology Inc.’s PIC16F1823 device. For more detailed
device specifications, and possibly clarification of those given, please refer to the Microchip documentation
(available at http://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. ELM325 device only – does not include any load currents
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ELM325DSA
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