ELM627 Просмотр технического описания (PDF) - Elm Electronics
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ELM627 Datasheet PDF : 4 Pages
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ELM627
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 to +7.5V
Voltage on any other pin with
respect to VSS........................... -0.6V to (VDD + 0.6V)
Note:
Stresses beyond those listed here will likely damage
the device. These values are given as a design
guideline only. The ability to operate to these levels
is neither inferred nor recommended.
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
Minimum Typical Maximum Units
Conditions
Supply Voltage, VDD
VDD rate of rise
Average Supply Current, IDD
4.5
5.0
0.05
1.0
5.5
V
V/ms see note 2
2.4
mA see note 3
Input low voltage
Input high voltage
Output low voltage
Output high voltage
Output Pulse Width
Maximum Timing Error
Input Current
VSS
0.15 VDD
V
0.85 VDD
VDD
V
0.6
V Current (sink) = 8.7mA
VDD - 0.7
V Current (source) = 5.4mA
95
100
105
msec see notes 4 and 5
5
% see note 4
-0.5
+0.5
mA see note 6
Notes:
1. This integrated circuit is produced with a Microchip Technology Inc.’s PIC12C5XX as the core embedded
microcontroller. For further device specifications, and possibly clarification of those given, please refer to the
appropriate Microchip documentation.
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. Device only. Does not include any LED or drive currents.
4. Pulse timing is generated internally, and is affected by both temperature and supply voltage. Although the
limits cannot be absolutely guaranteed, these are generally the widest variation that would normally be
encountered.
5. This pulse is also generated immediately after circuit powerup.
6. This specification represents current flowing through the protection diodes when applying large voltages to
the TxD input (pin 5) through a current limiting resistance. Currents quoted are the maximum continuous.
ELM627DSA
Elm Electronics – Circuits for the Hobbyist
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