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SC312XDP512F0MPVR датащи(PDF) 321 Page - Freescale Semiconductor, Inc

номер детали SC312XDP512F0MPVR
подробное описание детали  HCS12X Microcontrollers
PDF  1348 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
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SC312XDP512F0MPVR датащи(HTML) 321 Page - Freescale Semiconductor, Inc

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Chapter 7 Enhanced Capture Timer (S12ECT16B8CV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
321
7.3.2.5
Timer Count Register (TCNT)
Read: Anytime
Write: Has no meaning or effect
All bits reset to zero.
15
14
13
12
11
10
9
8
R
TCNT15
TCNT14
TCNT13
TCNT12
TCNT11
TCNT10
TCNT9
TCNT8
W
Reset
00000000
Figure 7-7. Timer Count Register High (TCNT)
76543210
R
TCNT7
TCNT6
TCNT5
TCNT4
TCNT3
TCNT2
TCNT1
TCNT0
W
Reset
00000000
Figure 7-8. Timer Count Register Low (TCNT)
Table 7-6. TCNT Field Descriptions
Field
Description
15:0
TCNT[15:0]
Timer Counter Bits — The 16-bit main timer is an up counter. A read to this register will return the current value
of the counter.
Access to the counter register will take place in one clock cycle.
Note: A separate read/write for high byte and low byte in test mode will give a different result than accessing them
as a word. The period of the first count after a write to the TCNT registers may be a different size because
the write is not synchronized with the prescaler clock.



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