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MC68340CAB16E Datasheet, PDF (345/441 Pages) Freescale Semiconductor, Inc – Integrated Processor with DMA Users Manual | |||
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Freescale Semiconductor, Inc.
SECTION 8
TIMER MODULES
Each MC68340 timer module contains a counter/timer (timer 1 and timer 2) as shown in
Figure 8-1. Each timer interfaces directly to the CPU32 via the intermodule bus (IMB).
Each timer consists of the following major areas:
⢠A General-Purpose Counter/Timer
⢠Internal Control Logic
⢠Interrupt Control Logic
TIMER 1
TIMER 1
TIN1
TOUT1
TGATE1
TIMER 2
TIMER 2
TIN2
TOUT2
TGATE2
INTERRUPT
CONTROL
LOGIC
INTERRUPT
CONTROL
LOGIC
IMB
INTERFACE
IMB
INTERFACE
Figure 8-1. Simplified Block Diagram
8.1 MODULE OVERVIEW
Each timer module consists of the following functional features:
⢠Versatile General-Purpose Timer
⢠8-Bit Prescaler/16-Bit Counter
⢠Timers Can Be Externally Cascaded for a Maximum Count Width of 48 Bits
⢠Programmable Timer Modes:
â Input Capture/Output Compare
â Square-Wave Generation
â Variable Duty-Cycle Square-Wave Generation
â Variable-Width Single-Shot Pulse Generation
MOTOROLA
MC68340 USERâS MANUAL
8-1
For More Information On This Product,
Go to: www.freescale.com
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