CRTOUCH Datasheet, PDF (61/68 Pages) Freescale Semiconductor, Inc – Capacitive and Resistive Touch Sensing Application Specific IC.

A.6 Current ratings
Electrical Specifications
Description
Typical¹
Max²
Unit
Run
• 3.3 V
11.8
• 1.8 V
11.8
mA
14.6
13.7
Sleep
• 3.3 V
0.39
• 1.8 V
0.39
mA
6.9
6.1
Shutdown
• 3.3 V
1
• 1.8 V
1
A
120
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1. Average current measured with the device in idle state.
2. Average current measured while touching the touch screen, with pressure and two touch gestures enabled. A screen with
impedances around 600 was used. This value varies depending on the current consumed by the screen when touched.
A.7 Operating mode transition timing specification
Description
Reset – Run¹
Run – Sutdown transiton
Sleep – Run⁴
Wake pulse
Min
Max
Unit
—
13
mS
2²
550³
S
5
—
S
10
—
S
1. Valid for power on reset, pin reset and shutdown wakeup.
2. Measured when only the shutdown bit is written without prior register writes.
3. Measured after writing a series of registers before shutdown. Time increases due to the time required to store values in non
volatile memory.
4. After a falling edge on Wake pin.
A.8 Resistive screen scan times specifications
Description
Min
Typical
Max
Unit
Signal settling time
14
100
300
S
Signal measurement time
S
• Normal mode
—
150
—
• Calibration mode
—
160
—
CRTouch Data Sheet, Rev. 3
Freescale Semiconductor
61