MC68HC705J1ACPE Datasheet, PDF (109/162 Pages) Freescale Semiconductor, Inc – Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.
Technical Data — MC68HC705J1A
Section 9. Multifunction Timer Module
9.1 Contents
9.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
9.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
9.4 Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
9.5 I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
9.5.1 Timer Status and Control Register . . . . . . . . . . . . . . . . . . .112
9.5.2 Timer Counter Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
9.6 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
9.6.1 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
9.6.2 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
9.2 Introduction
The multifunction timer provides a timing reference with programmable
real-time interrupt (RTI) capability. Figure 9-1 shows the timer
organization.
Features include:
• Timer overflow
• Four selectable interrupt rates
• Computer operating properly (COP) watchdog timer
MC68HC705J1A — Rev. 4.0
Multifunction Timer Module
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Technical Data