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B.2 Functions
Register
acronym
TMC—Timer mode register C
Bit
numbers
Bit
Initial bit
values
Initial value
Read/Write
Possible types of access
R
Read only
W
Write only
R/W
Read and write
Register
name
H'B4
7
6
5
TMC7
TMC6
TMC5
0
0
0
R/W
R/W
R/W
Clock select
0
0 0
1 0
1 0 0
1 0
Counter up/down control
0 0
TCC is an up-counter
1
TCC is a down-counter
1 *
TCC up/down control is determined by input at pin
UD. TCC is a down-counter if the UD input is high,
and an up-counter if the UD input is low.
Auto-reload function select
0
Interval timer function selected
1
Auto-reload function selected
Address to which the
register is mapped
4
3
2
—
—
TMC2
1
1
0
—
—
R/W
Internal clock:
ø/8192
1
Internal clock:
ø/2048
Internal clock:
ø/512
1
Internal clock:
ø/64
Internal clock:
ø/16
1
Internal clock:
ø/4
Internal clock:
ø /4
W
1
External event (TMIC):
Rising or falling edge
*: Don't care
400
Name of
on-chip
supporting
module
Timer C
1
0
TMC1
TMC0
Names of the
0
0
bits. Dashes
R/W
R/W
(—) indicate
reserved bits.
Full name
of bit
Descriptions
of bit settings
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