Symbol | Mode | PTC channel | Max Sensor Load (1) | Units |
---|---|---|---|---|
CLOAD | Self-capacitance | Y0 | 15 | pf |
Y1 | 22 | |||
Y2 | 18 | |||
Y3 | 22 | |||
Y4 | ||||
Y5 | ||||
Y6 | ||||
Y7 | ||||
Y8 | ||||
Y9 | ||||
Y10 | ||||
Y11 | ||||
Y12 | ||||
Y13 | ||||
Y14 | ||||
Y15 | ||||
Mutual-capacitance | All | 29 |
Symbol | Setting | Average |
---|---|---|
Gain | GAIN_1 | 1.0 |
GAIN_2 | 2.0 | |
GAIN_4 | 3.8 | |
GAIN_8 | 7.8 | |
GAIN_16 | 12.8 | |
GAIN_32 | - |
The values provided in the Power Consumption table below are measured values of power consumption under the following conditions:
Operating Conditions:
VDD = 3.3V
Clocks:
OSC8M used as main clock source, running undivided at 8 MHz.
CPU is running on flash with 0 wait states, at 8 MHz.
PTC running at 4 MHz.
PTC Configuration:
Mutual-Capacitance mode
One touch channel
System Configuration:
Standby Sleep mode enabled.
RTC running on OSCULP32K: used to define the PTC scan rate through the event system.
Drift Calibration disabled: no interrupts, PTC scans are performed in Standby mode.
Drift Calibration enabled: RTC interrupts (wakeup) the CPU to perform PTC scans. PTC drift calibration is performed every 1.5 sec.
Symbol | Parameters | Drift Calibration | PTC scan rate (msec) | Oversamples | Ta | Typ. | Max. | Units |
---|---|---|---|---|---|---|---|---|
IDD (2) | Current Consumption | Disabled | 10 | 4 | Max. 125°C Typ. 25°C | 67 | 487 | µA |
16 | 75 | 498 | ||||||
50 | 4 | 62 | 481 | |||||
16 | 64 | 484 | ||||||
100 | 4 | 62 | 481 | |||||
16 | 63 | 482 | ||||||
200 | 4 | 61 | 481 | |||||
16 | 62 | 482 | ||||||
Enabled | 10 | 4 | 71 | 495 | ||||
16 | 79 | 507 | ||||||
50 | 4 | 64 | 485 | |||||
16 | 65 | 489 | ||||||
100 | 4 | 63 | 485 | |||||
16 | 64 | 487 | ||||||
200 | 4 | 62 | 484 | |||||
16 | 63 | 484 |