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DA7282-00FVC bảng dữ liệu(PDF) 49 Page - Renesas Technology Corp

tên linh kiện DA7282-00FVC
Giải thích chi tiết về linh kiện  LRA/ERM Ultra-Low Power Haptic Driver with Multiple Input Triggers and Integrated Waveform Memory
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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DA7282
LRA/ERM Ultra-Low Power Haptic Driver with
Multiple Input Triggers and Integrated
Waveform Memory
Datasheet
Revision 3.1
10-Feb-2022
CFR0011-120-00
49 of 87
© 2022 Renesas Electronics
For lowest OFF mode current consumption control the enable function via a host-side GPIO push-
pull that connects the VDDIO/EN pin either to GND or to the system VDDIO supply.
If the VDDIO/EN pin is only needed as a device hardware reset, where it will only be pulled low for a
short time (therefore IDLE state power consumption is not an issue), a possible system solution is to
use an open-drain output with a pull-up resistor to the system VDDIO supply. In this configuration a
larger pull-up resistor might require an additional capacitor.
For recommended configurations and component values for the two examples, see Figure 24 and
Table 17.
Host
GPIO
Driver
DA7282
GPIO
system VDDIO supply
GND
VDDIO/EN
R
C
Host
GPIO
Driver
DA7282
GPIO
system VDDIO supply
GND
VDDIO/EN
R
C
Open Drain GPIO
(for hardware reset function only)
Push-Pull GPIO
(for best OFF mode current consumption)
Figure 24: VDDIO/EN Pin Control in Push-Pull Configuration and Open Drain Configuration
Table 17: VDDIO/EN Pin Control Recommended Values of R and C
Pullup Resistor R
(kΩ)
Decoupling Capacitor C (pF)
< 200
None
0.2 to 2.2
100
2.2 to 10
1000



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