STM8-TOUCH-LIB STMicroelectronics, STM8-TOUCH-LIB Datasheet - Page 4

• Manufacturer Part Number: STM8-TOUCH-LIB
• Description: STM8 touch sensing library
• Manufacturer: STMicroelectronics

Specifications of STM8-TOUCH-LIB

• Rc Acquisition: up to 24 keys and 2 wheels/sliders supported
• Ct Acquisition: up to 16 keys and 2 wheels/sliders supported

MCU resources
4
4.1
Table 2.
4/9
Group
Group
Maximum number
1
2
of channels
PB0
PB1
PD0
PD1
PB2
PB3
PD2
PD3
MCU resources
Table 1
taken when using them to avoid any misbehavior.
Table 1.
Number of charge transfer capacitive sensing channels
Table 2
channels for the STM8L101x and STM8L15x package, respectively.
STM8L101x resources used for CT acquisition
GPIOs
16-bit timer with 8-bit prescaler
(TIM2 or TIM3)
8-bit timer (TIM4)
Comparator (COMP)
Routing interface (RI)
shows the STM8 peripherals that are used by the STM8-TOUCH-LIB. Care must be
and
10
11
12
13
9
Peripheral
-
-
-
Table 3
List of STM8 peripherals used by the STM8-TOUCH-LIB
with 2 sampling capacitors
TSSOP20 / UFQFPN20
10
7
8
6
9
-
-
-
provide the maximum number of charge-transfer capacitive sensing
3
3
2
Doc ID 17896 Rev 1
I/O control
V
Generic timebase for the state
machine
Charge transfer
I/O control and charge transfer
IH
/V
1 channel
capacitor
capacitor
channels
sampling
sampling
with one
with one
IL
measurement
2
Function
12
13
14
15
10
11
8
9
with 2 sampling
WFQFPN28
capacitors
4
4
6
channels
sampling
capacitor
channels
sampling
capacitor
with one
with one
3
3
Acquisition principle
13
14
10
15
16
11
12
9
VFQFPN32 / LQFP32
STM8-TOUCH-LIB
RC, CT
RC, CT
with 2 sampling
RC
CT
CT
capacitors
4
4
6
channels
sampling
capacitor
channels
sampling
capacitor
with one
with one
3
3