mc68hc05bs8 Freescale Semiconductor, Inc, mc68hc05bs8 Datasheet - Page 55

• Manufacturer Part Number: mc68hc05bs8
• Description: Mc68hc05 Family Of Low-cost Single-chip Microcontrollers.
• Manufacturer: Freescale Semiconductor, Inc

This bit is set when the 8-bit ripple counter overflows from $FF to $00; a timer overflow interrupt
will occur, if TOFE (bit 5) is set. TOF is cleared by writing a ‘0’ to the bit.
MC68HC05BS8
8
8
Overflow
Detect
Circuit
CTOF RTIF CTOFE RTIE
CT7
f
op
Interrupt Circuit
Figure 6-6 Core Timer Block Diagram
/2
To Interrupt
CT6
10
Logic
CTimer Control & Status Reg.
Core Timer Counter Register
RTI Select Circuit
CT5
CTCSR ($0008)
CTCR ($0009)
CT4
7-bit Counter
CT3
–
TIMERS
Internal Bus
CT2
–
CT1
RT1
CT0
RT0
f
op
/2
2
Resetable Timer ( 8)
COP Watchdog
Processor
Clock (E)
f
To Reset
Internal
op
Logic
4
TPG
6