UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
849 of 1269
NXP Semiconductors
UM10503
Chapter 29: LPC43xx Timer0/1/2/3
29.5 Pin description
Input signals to each timer capture channel can originate from the external pins or from
several other internal sources. The GIMA (see
) and (for capture channel 3 of
each timer) the CTOUTCTRL bit of CREG6 determine which signal is captured by the
timer.
The match outputs are connected to the Tn_MATm pin functions. In addition, the match
outputs ORed with the SCT outputs can be monitored on the CTOUT pins provided that
the CTOUTCTRL bit is set to 0 (default) in the CREG6 register (see
Table 679. Timer0 inputs and outputs
Input/output From/to
multiplexed pin
function
From/to internal signal
Default (see
GIMA,
)
CTOUTCTRL
bit (see
Timer0 inputs
CAP0
CTIN_0
-
yes
-
-
SGPIO3
no
-
T0_CAP0
-
no
-
CAP1
CTIN_1
-
yes
-
-
USART2 TX active
no
-
T0_CAP1
-
no
-
CAP2
CTIN_2
-
yes
-
-
SGPIO3_DIV
no
-
T0_CAP2
-
no
-
CAP3
-
SCT output 15 OR T3 match
channel 3
yes
0
-
SCT output 15
yes
1
T0_CAP3
-
no
-
-
T3 match channel 3
no
-
Timer0 outputs
MAT0
T0_MAT0
-
-
-
CTOUT_0; if
match ORed with
SCT output
-
-
0
-
ADC start0 input (ADC
CR register START bits
= 0x2)
no
-
MAT1
T0_MAT1
-
no
-