XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 343

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

Technical Data — MC68HC908AZ60A
21.1 Contents
21.2 Introduction
MC68HC908AZ60A — Rev 2.0
MOTOROLA
Section 21. Programmable Interrupt Timer (PIT)
21.2
21.3
21.4
21.5
21.6
21.6.1
21.6.2
21.7
21.8
21.8.1
21.8.2
21.8.3
This section describes the Programmable Interrupt Timer (PIT) which is
a periodic interrupt timer whose counter is clocked internally via software
programmable options.
For further information regarding timers on M68HC08 family devices,
please consult the HC08 Timer Reference Manual, TIM08RM/AD.
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .344
PIT Counter Prescaler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
PIT During Break Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . 347
I/O Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Programmable Interrupt Timer (PIT)
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
PIT Status and Control Register . . . . . . . . . . . . . . . . . . . 347
PIT Counter Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
PIT Counter Modulo Registers . . . . . . . . . . . . . . . . . . . . 351
Figure 21-1
is a block diagram of the PIT.
Technical Data
343