MC68HC05RC17 Datasheet, PDF (64/128 Pages) Freescale Semiconductor, Inc – General Release Specification

Core Timer
Freescale Semiconductor, Inc.
88
CTCR
INTERNAL BUS
$09 CORE TIMER COUNTER REGISTER (CTCR)
INTERNAL PERIPHERAL CLOCK (E)
E ÷ 2²
COP
CLEAR
E ÷ 210
5-BIT COUNTER
E ÷ 215 E ÷ 214 E ÷ 213 E ÷ 212
RTI SELECT CIRCUIT
÷ 4 ^{E ÷ 212} _POR
TCBP
OVERFLOW
DETECT
CIRCUIT
RTI_OUT
CTCSR _{CTOF RTIF TOFE RTIE TOFC RTFC RT1 RT0 $08 TIMER CONTROL &}
STATUS REGISTER
INTERRUPT CIRCUIT
COP WATCHDOG
TIMER (÷8)
2³
TO INTERRUPT
LOGIC
TO RESET
LOGIC
Figure 8-1. Core Timer Block Diagram
General Release Specification
MC68HC05RC17 — Rev. 2.0
Core Timer
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