r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 837
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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18.3.4
The TCR registers are 16-bit readable/writable registers. Each TCR selects the count clock,
specifies the edge when an external clock is selected, and controls interrupt generation when the
flag indicating TCNT underflow is set to 1. TCR2 is also used for input capture control and
control of interrupt generation in the event of input capture.
• TCR0, TCR1, TCR3, TCR4 and TCR5
• TCR2
Initial value:
Initial value:
Bit
15 to 10 —
9
8
R/W:
R/W:
BIt:
BIt:
Timer Control Registers (TCRn) (n = 0 to 5)
Bit Name
ICPF*
UNF
15
15
—
—
R
R
0
0
1
14
14
—
—
R
R
0
0
13
13
—
—
R
R
0
0
Initial
Value
All 0
0
0
12
12
—
—
R
R
0
0
R/W
R
R/W
R/W
11
—
11
—
R
R
0
0
10
10
—
—
R
R
0
0
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Input Capture Interrupt Flag
Status flag, provided in channel 2 only, which indicates
the occurrence of input capture.
0: Input capture has not occurred
[Clearing condition]
When 0 is written to ICPF
1: Input capture has occurred
[Setting condition]
When input capture occurs*
Underflow Flag
Status flag that indicates the occurrence of TCNT
underflow.
0: TCNT has not underflowed
[Clearing condition]
When 0 is written to UNF
1: TCNT has underflowed
[Setting condition]
When TCNT underflows*
ICPF
R/W
—
R
9
0
9
0
UNF
UNF
R/W
R/W
8
0
8
0
ICPE1
R/W
—
R
7
0
7
0
ICPE0
Rev.1.00 Jan. 10, 2008 Page 807 of 1658
R/W
—
R
6
0
6
0
UNIE
UNIE
R/W
R/W
5
0
5
0
2
2
CKEG1
CKEG1
R/W
R/W
4
0
4
0
CKEG0
CKEG0
R/W
R/W
3
0
3
0
18. Timer Unit (TMU)
REJ09B0261-0100
TPSC2
TPSC2
R/W
R/W
2
0
2
0
TPSC1
TPSC1
R/W
R/W
1
0
1
0
TPSC0
TPSC0
R/W
R/W
0
0
0
0
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