MC908QY8CDWE Datasheet, PDF (178/232 Pages) Freescale Semiconductor, Inc – Addendum to MC68HC908QB8, rev. 3

Timer Interface Module (TIM)
PTA0/TCH0/AD0/KBI0
PTA1/TCH1/AD1/KBI1
PTA2/IRQ/KBI2/TCLK
PTA3/RST/KBI3
PTA4/OSC2/AD2/KBI4
PTA5/OSC1/AD3/KBI5
PTB0/SCK/AD4
PTB1/MOSI/AD5
PTB2/MISO/AD6
PTB3/SS/AD7
PTB4/RxD/AD8
PTB5/TxD/AD9
PTB6/TCH2
PTB7/TCH3
MC68HC908QB8
256 BYTES
USER RAM
V_DD
POWER SUPPLY
V_SS
M68HC08 CPU
MC68HC908QB8
8192 BYTES
USER FLASH
CLOCK
GENERATOR
KEYBOARD INTERRUPT
MODULE
EXTERNAL INTERRUPT
MODULE
AUTO WAKEUP
MODULE
LOW-VOLTAGE
INHIBIT
4-CHANNEL 16-BIT
TIMER MODULE
COP
MODULE
10-CHANNEL
10-BIT ADC
ENHANCED SERIAL
COMMUNICATIONS
INTERFACE MODULE
SERIAL PERIPHERAL
INTERFACE
DEVELOPMENT SUPPORT
MONITOR ROM
BREAK MODULE
RST, IRQ: Pins have internal pull up device
All port pins have programmable pull up device
PTA[0:5]: Higher current sink and source capability
Figure 16-1. Block Diagram Highlighting TIM Block and Pins
16.3.2 Input Capture
With the input capture function, the TIM can capture the time at which an external event occurs. When an
active edge occurs on the pin of an input capture channel, the TIM latches the contents of the counter into
the TIM channel registers, TCHxH:TCHxL. The polarity of the active edge is programmable. Input
captures can be enabled to generate interrupt requests.
MC68HC908QB8 Data Sheet, Rev. 3
176
Freescale Semiconductor