MC9S08SH8CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC9S08SH8CSC

HCS08 Microcontrollers

Freescale Semiconductor 

Chapter 12

Modulo Timer (S08MTIMV1)

12.1 Introduction

The MTIM is a simple 8-bit timer with several software selectable clock sources and a programmable

interrupt.

The central component of the MTIM is the 8-bit counter, which can operate as a free-running counter or a

modulo counter. A timer overflow interrupt can be enabled to generate periodic interrupts for time-based

software loops.

Figure 12-1 shows the MC9S08SH8 block diagram with the MTIM module highlighted.

12.1.1 MTIM Configuration In ormation

The external clock for the MTIM module, TCLK, is selected by setting CLKS = 1:1 or 1:0 in MTIMCLK,

which selects the TCLK pin input. The TCLK input on PTA0 can be enabled as external clock inputs to

both MTIM and TPM modules simultaneously.

MC9S08SH8 MCU Series Data Sheet, Rev. 3

Freescale Semiconductor

183

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