MC68HC08JB1 Datasheet, PDF (143/216 Pages) Motorola, Inc – Microcontrollers

10.5 Functional Description
Figure 10-1 shows the structure of the TIM. The central component of
the TIM is the 16-bit TIM counter that can operate as a free-running
counter or a modulo up-counter. The TIM counter provides the timing
reference for the input capture and output compare functions. The TIM
counter modulo registers, TMODH:TMODL, control the modulo value of
the TIM counter. Software can read the TIM counter value at any time
without affecting the counting sequence.
The two TIM channels are programmable independently as input
capture or output compare channels.
TCLK
(Not available)
INTERNAL
BUS CLOCK
TSTOP
TRST
PRESCALER
16-BIT COUNTER
16-BIT COMPARATOR
TMODH:TMODL
CHANNEL 0
16-BIT COMPARATOR
TCH0H:TCH0L
16-BIT LATCH
CHANNEL 1
16-BIT COMPARATOR
TCH1H:TCH1L
16-BIT LATCH
PRESCALER SELECT
PS2
PS1
PS0
ELS0B ELS0A
CH0F
MS0A
ELS1B ELS1A
MS0B
MS1A
CH1F
TOF
INTERRUPT
TOIE
LOGIC
TOV0
CH0MAX
CH0IE
TOV1
CH1MAX
CH1IE
PORT
LOGIC
TCH0
INTERRUPT
LOGIC
PORT
LOGIC
INTERRUPT
LOGIC
TCH1
(Not available)
Figure 10-1. TIM Block Diagram
MC68HC08JB1 — Rev. 2.1
Freescale Semiconductor
Technical Data
143