MC908JB16DWE Datasheet, PDF (71/332 Pages) Freescale Semiconductor, Inc – Microcontrollers

Technical Data — MC68HC908JB16
Section 5. Configuration Register (CONFIG)
5.1 Contents
5.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
5.4 Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
5.2 Introduction
This section describes the configuration register, CONFIG. The
configuration register enables or disables these options:
• Low voltage inhibit (LVI) module control and voltage trip point
selection
• USB reset
• Stop mode recovery time (2048 or 4096 OSCDCLK cycles)
• COP timeout period (2¹⁸ – 2⁴ or 2¹³ – 2⁴ OSCDCLK cycles)
• STOP instruction
• Computer operating properly module (COP)
5.3 Functional Description
The configuration register is used in the initialization of various options.
The configuration register can be written once after each reset. All of the
configuration register bits are cleared during reset. Since the various
options affect the operation of the MCU, it is recommended that this
register be written immediately after reset. The configuration register is
located at $001F. The configuration register may be read at anytime.
MC68HC908JB16 — Rev. 1.1
Freescale Semiconductor
Configuration Register (CONFIG)
Technical Data
71