MC9S08QA2 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

MFG CO.

MC9S08QA2

8-bit HCS08 Central Processor Unit (CPU)

Freescale Semiconductor 

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Electrical Characteristics

RESET PIN

textrst

Figure 10. Reset Timing

tIHIL

KBIPx

IRQ/KBIPx

tILIH

Figure 11. IRQ/KBIPx Timing

3.8.2 TPM/MTIM Module Timing

Synchronizer circuits determine the shortest input pulses that can be recognized or the fastest clock that can be used as the

optional external source to the timer counter. These synchronizers operate from the current bus rate clock.

Table 10. TPM/MTIM Input Timing

Function

External clock frequency

External clock period

External clock high time

External clock low time

Input capture pulse width

Symbol

Min

fTCLK

0

tTCLK

4

tclkh

1.5

tclkl

1.5

tICPW

1.5

Max

fBus/4

—

—

—

—

Unit

Hz

tcyc

tcyc

tcyc

tcyc

tclkh

tTCLK

TCLK

tclkl

Figure 12. Timer External Clock

MC9S08QA4 Series MCU Data Sheet, Rev. 3

14

Freescale Semiconductor

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