XE8000EV110 Semtech, XE8000EV110 Datasheet - Page 180

EVAL BOARD FOR XE8802AMI035LF

XE8000EV110

Manufacturer Part Number
XE8000EV110
Description
EVAL BOARD FOR XE8802AMI035LF
Manufacturer
Semtech
Type
MCUr
Datasheets

Specifications of XE8000EV110

Contents
Fully Assembled Evaluation Board
For Use With/related Products
XE88LC02MI035
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
20.10 PWM mode
The counters can generate PWM signals (Pulse Width Modulation) on the PortB outputs PB(0) and PB(1).
The PWM mode is selected by setting CntPWM1 and CntPWM0 in the RegCntConfig1 register. See Table 20-12
and Table 20-13 for an exact description of how the setting of CntPWM1 and CntPWM0 affects the operating
mode of the counters A, B, C and D according to the other configuration settings.
When CntPWM0 is enabled, the PWMA or PWMAB output value overrides the value set in bit 0 of RegPBOut in
the Port B peripheral. When CntPWM1 is enabled, the PWMC or PWMCD output value overrides the value set in
bit 1 of RegPBOut. The corresponding ports (0 and/or 1) of Port B must be set in digital mode and as output and
either open drain or not and pull up or not through a proper setting of the control registers of the Port B.
Counters in PWM mode count down or up, according to the CntXDownUp bit setting. No interrupts and events are
generated by the counters that are in PWM mode. Counters do count circularly: they restart at zero or at the
maximal value (either 0xFF when not cascaded or 0xFFFF when cascaded) when respectively an overflow or an
underflow condition occurs in the counting.
© Semtech 2006
dow n counting
up counting
clock counter X
clock counter X
write RegCntX
write RegCntX
CntXDownUp
CntXDownUp
CntXEnable
CntXEnable
RegCntX_w
RegCntX_w
RegCntX_r
RegcntX_r
IrqX
IrqX
XX
XX
XX
XX
0
Figure 20-2. Up and down count interrupt generation.
3
3
1
XE8802 Sensing Machine Data Acquisition MCU
2
3
2
1
3
0
20-8
0
with ZoomingADC™ and LCD driver
3
1
2
2
1
3
0
0
3
1
2
2
1
3
www.semtech.com
0

Related parts for XE8000EV110