stmpe812a STMicroelectronics, stmpe812a Datasheet - Page 14

• Manufacturer Part Number: stmpe812a
• Description: S-touch? Enhanced 4-wire Resistive Touchscreen Controller With Pwm And Dedicated Reset Pin
• Manufacturer: STMicroelectronics

Power modes
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Power modes
The STMPE812A operates in a 2 states: active and hibernate.
Active:
Hibernate:
-PWM/ADC must be “off” (clock disable bit SET)
-Any GPIO input, with interrupt enabled, causes a transition to “active” state, if an input
change is detected.
-Pen down even causes transition to “active” state if the touchscreen controller is enabled.
Table 6.
1. At Vcc=1.8V, TCS running at 100sets of X/Y per second, MAV disabled.
–
–
–
Current consumption
Interface (I
Power mode
GPIO hotkey
Touchscreen
Whenever PEN-DOWN is detected, the device remains in active mode
Whenever PWM is active, the device remains in active mode
Whenever ADC is active, the device remains in ACTIVE MODE
Power mode
2
C)
Doc ID 18225 Rev 2
280 µA (max)
Active
Yes
Yes
Yes
(1)
1.0 µA (max.)
Hibernate
Yes
Yes
Yes
STMPE812A