mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 207

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

11.9 I/O Signals
11.9.1 TIM Clock Pins (PTD4/KBI4/T1CLK, PTD5/KBI5/T2CLK)
11.9.2 TIM Channel I/O Pins (PTB2/T1CH0, PTB3/T1CH1, PTB4/T2CH0, PTB5/T2CH1)
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Port B shares four of its pins with the TIM channel I/O pins: T1CH0,
T1CH1, T2CH0, and T2CH1.
Port D shares two of its pins with the TIM clock input pins: T1CLK and
T2CLK
T[1,2]CLK is an external clock input that can be the clock source for the
TIM[1,2] counter instead of the prescaled internal bus clock. Select the
T[1,2]CLK input by writing logic 1’s to the three prescaler select bits,
PS[2:0]. (See
T[1,2]CLK pulse width, T[1,2]CLK
The maximum T[1,2]CLK frequency is:
T1CLK and T2CLK are available as standard I/Os or KBI pins when not
used as the TIM clock inputs.
Each channel I/O pin is programmable independently as an input
capture pin or an output compare pin. T1CH0 and T2CH0 can be
configured as buffered output compare or buffered PWM pins.
Timer Interface Module (TIM)
11.10.1 TIM Status and Control
------------------------------------ -
bus frequency
bus frequency ÷ 2
1
LMIN
or T[1,2]CLK
+
t
SU
Register.) The minimum
Timer Interface Module (TIM)
HMIN
, is:
Data Sheet
I/O Signals
207