ELM329
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, V
DD
V
DD
rate of rise
normal
low power
Input logic levels
low
high
Schmitt trigger
input thresholds
rising
falling
Output low voltage
Output high voltage
Brown-out reset voltage
A/D conversion time
Pin 18 low level pulse duration to
wake the IC from low power mode
IgnMon debounce time
AT LP to PwrCtrl output time
LP ALERT to PwrCtrl output time
Notes:
Minimum
4.5
0.05
Typical
5.0
Maximum Units
5.5
V
V/ms
Conditions
see note 2
ELM329 device only - does not
include any load currents
Average current, I
DD
12
0.15
V
SS
3.0
2.9
1.0
1.5
0.3
4.4
4.11
4.33
9
128
-
4.55
0.8
V
DD
4.0
mA
mA
V
V
V
V
V
V
V
msec
µsec
Pins 5, 6, 7, and 24 only
Pins 1, 11, 12, 13, 15 and 18 only
current (sink) = 10 mA
current (source) = 10 mA
see note 3
50
65
1.0
2.0
msec
sec
sec
1. This integrated circuit is based on Microchip Technology Inc.’s PIC18F2480 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. This is the time between when the AT RV command is received, and when the voltage reading response
begins.
ELM329DSB
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