Power Consumption
The values provided in the table below are measured values of power
consumption, and the values are based on these conditions:
Operating Conditions
Clocks
- OSC16M divided to 4 MHz used as main
clock source
- CPU is running on Flash with 0 wait
state, at 4 MHz
- PTC Acquisition Clock
(FPTC_ACQ) at 4 MHz
- Voltage Regulator mode:
LPEFF-enabled
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 (wake up) the CPU to perform PTC scans. PTC drift calibration is
performed every 1.5 seconds.
Table 1. Power Consumption
(1)
| Symbol |
Parameters |
Drift Calibration |
PTC scan rate (msec) |
Oversamples |
Ta |
Typ. |
Max. |
Units |
| IDD |
Current
Consumption |
Disabled |
10 |
4 |
Max 125°C,
Typ 25°C |
6.2 |
292.0 |
µA |
| 16 |
12.7 |
300.5 |
| 50 |
4 |
2.3 |
286.1 |
| 16 |
3.7 |
290.3 |
| 100 |
4 |
1.7 |
286.1 |
| 16 |
2.4 |
286.2 |
| 200 |
4 |
1.4 |
285.5 |
| 16 |
1.8 |
286.2 |
| Enabled |
10 |
4 |
8.3 |
293.9 |
| 16 |
14.2 |
304.9 |
| 50 |
4 |
3.0 |
289.2 |
| 16 |
4.8 |
290.5 |
| 100 |
4 |
2.3 |
289.2 |
| 16 |
2.8 |
289.5 |
| 200 |
4 |
1.9 |
287.9 |
| 16 |
2.4 |
289.0 |
Note:
- 1.These values are based on
characterization, and are not covered in test limits in the production.