ELM412P 查看數據表（PDF） - Elm Electronics
零件编号
产品描述 (功能)
生产厂家
ELM412P Datasheet PDF : 4 Pages
| |||
ELM412
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
3.0
5.0
0.05
1.0
0.60
5.5
V
V/ms see note 2
2.4
mA VDD = 5V, see note 3
2.4
mA VDD = 3V, see note 3
Input low voltage
VSS
0.15 VDD
V
Input high voltage
0.85 VDD
VDD
V
Output low voltage
0.6
V Current (sink) = 8.7mA
Output high voltage
VDD - 0.7
V Current (source) = 5.4mA
Output Duty Cycle
67
%
Output series resistance
470
2200
Ω see note 4
Frequency Accuracy
2
% see note 5
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. Internal IC current only. Does not include any piezo or other currents.
4. A series resistor must be used to limit the current peaks due to the relatively large capacitance (~50nF) of a
piezo element. Maximum size is determined by the desired volume level.
5. Frequency error is both supply and temperature dependent, typically as shown in Figure 1 below.
-6
fast -4
-2
% Error 0
+2
slow +4
+6
VDD = 5V
VDD = 3V
ELM412DSB
-40
0
40
80
Temperature (°C)
Figure 1. Average Frequency Error
Elm Electronics – Circuits for the Hobbyist
< http://www.elmelectronics.com/ >
3 of 4
Share Link: 