PICO-IMX6UL-EMMC REV. A1. HARDWARE MANUAL
– VER 1.00 – MAR 28 2016
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3.10. Pulse Width Modulation (PWM)
The PICO-IMX6UL-EMMC has 3 dedicated PWM pins at 1.8V and 1 PWM for LCD brightness control
at 3.3V.
The following features characterize the PWM:
16-bit up-counter with clock source selection
4 x 16 FIFO to minimize interrupt overhead
12-bit prescaler for division of clock
Sound and melody generation
Active high or active low configured output
Can be programmed to be active in low-power mode
Can be programmed to be active in debug mode
Interrupts at compare and rollover
For additional details, please
refer to the “Pulse Width Modulation (PWM)” chapter of the
“i.MX6Ultralite Application Processor Reference Manual”.
Table 18 - PWM Signal Description
PIN
CPU
BALL
CPU PAD NAME
Signal
V
I/O Description
E1_33
D15
ENET1_RX_ER
PWM8_OUT
1V8
I/O
General Purpose Input
Output with PWM control
E1_35
F14
ENET1_TX_CLK
PWM7_OUT
1V8
I/O
General Purpose Input
Output with PWM control
E1_37
J14
UART1_RTS
USDHC1_CD_B
1V8
I/O
General Purpose Input
Output with PWM control
X1_66
B4
NAND_ALE
PWM3_OUT
3V3
O
LCD Backlight brightness
Control