mc68hc705e5 Freescale Semiconductor, Inc, mc68hc705e5 Datasheet - Page 59

• Manufacturer Part Number: mc68hc705e5
• Description: M68hc05 Family Of Microcontrollers Mcus
• Manufacturer: Freescale Semiconductor, Inc

8.4 Timer Counter Register
MC68HC705E5
—
Rev. 1.0
Address:
The timer counter register (TCR) is a read-only register which contains
the current value of the 8-bit ripple counter at the beginning of the timer
chain. This counter is clocked at f
various functions including a software input capture. Extended time
periods can be attained using the TOF function to increment a temporary
RAM storage location, thereby simulating a 16-bit (or more) counter.
The power-on cycle clears the entire counter chain and begins clocking
the counter. After 4064 cycles, the power-on reset circuit is released,
which again clears the counter chain and allows the device to come out
of reset. At this point, if RESET is not asserted, the timer will start
counting up from zero and normal device operation will begin. When
RESET is asserted any time during operation other than POR, the
counter chain will be cleared.
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
$0009
Bit 7
0
Go to: www.freescale.com
Figure 8-3. Timer Counter Register (TCR)
= Unimplemented
6
0
Timer
5
0
op
4
0
divided by four and can be used for
3
0
General Release Specification
2
0
Timer Counter Register
1
1
Bit 0
Timer
1