mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 137

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Technical Data — MC68HC912D60A
11.1 Contents
11.2 Introduction
MC68HC912D60A — Rev. 3.1
Freescale Semiconductor
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
11.10 Real-Time Interrupt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
11.11 Clock Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167
11.12 Clock Function Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Clock generation circuitry generates the internal and external ECLK
signals as well as internal clock signals used by the CPU and on-chip
peripherals. A clock monitor circuit, a computer operating properly
(COP) watchdog circuit, and a periodic interrupt circuit are also
incorporated into the MC68HC912D60A.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Clock Sources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Phase-Locked Loop (PLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Acquisition and Tracking Modes. . . . . . . . . . . . . . . . . . . . . . . 141
Limp-Home and Fast STOP Recovery modes . . . . . . . . . . . . 143
System Clock Frequency formulas . . . . . . . . . . . . . . . . . . . . . 162
Clock Divider Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Computer Operating Properly (COP) . . . . . . . . . . . . . . . . . . . 166
Clock Functions
Section 11. Clock Functions
Technical Data
137