MC68HC05JJ6 Datasheet, PDF (148/216 Pages) Freescale Semiconductor, Inc – General Release Specification Microcontrollers

Core Timer
$0009
OVERFLOW
CORE TIMER COUNTER REGISTER
÷4
BITS 0–7 OF 15-STAGE
RIPPLE COUNTER
INTERNAL
CLOCK
RESET
÷2
OSC1
INTERNAL CLOCK ÷ 1024
CORE TIMER
INTERRUPT
REQUEST
$0008
CORE TIMER STATUS/CONTROL REGISTER
RESET
$1FF0
COP REGISTER
RESET
RTI RATE SELECT
÷2
÷2
÷2
÷2
÷2
÷2
÷2
÷2
÷2
÷2
÷2
POWER-ON
RESET
COP
WATCHDOG
RESET
Figure 10-1. Core Timer Block Diagram
General Release Specification
148
Core Timer
MC68HC05JJ6/MC68HC05JP6 — Rev. 3.2
Freescale Semiconductor