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MAXQ7667 User’s Guide
6.1.2 Type 2 Timer/Counter I/O Pins
E
ach of the three timer/counters, typically, has a pair of pins associated with it to support the enhanced input/output functionality. The pair
of pins are referred to as the primary and secondary pins and are designated the symbols T2P0 and T2PB0, respectively. Because there
are three Type 2 timers, the pairs are referred to as follows: T2P0, T2PB0; T2P1; T2P2, T2PB2 (secondary pin is not available for timer 1).
A
slightly different naming convention is also used for the primary and secondary pins, as shown by the following:
T
imer 0:
T
2P0, T2PB0 = T0, T0B
T
imer 1:
T
2P1 = T1 (no secondary output on T1B)
Timer 2: T2P2, T2PB2 = T2, T2B
To generalize, T2Px, T2PBx = Tx, TxB where x = 0, 1, 2.
Both naming conventions are commonly used for the MAXQ microcontrollers.
Table 6-1. Type 2 Timer/Counter Input and Output Pins
TYPE 2 TIMER/COUNTER F U N CTION PIN
MU L TIPLEXED WIT H
PORT PIN
FUN CTION
Timer 0 Input/Output—T0 (T2P0) 12 P0.3/AD C CTL
D ig ital GPIO and ADC Control Input. As T0 this pin is the pr i mar y
timer/PW M0 input or output. As AD CCTL this user- p rogra m mab le r is ing
or falling edge controls the SAR ADC samp l ing instant and start of con-
version. Optionally, the other edge can be used to enable the ADC and
begin acquir ing p r ior to sampl ing.
Timer 0 Secondary Output—T0B (T2PB0)
13
P0.4
D ig ital GPIO, Time r 0 I/O, and Com parator Output. As T0B this p in is the
secondary ti mer/PWM1 input or output. As C M PO this pin is the output of
the di g ital comparator for the lowpass filter.
Timer 1 Input/Output—T1 (T2P1)*
14
P0.5
D ig ital GPIO and Ti mer 1 I/O. As T1 this p in is the pr imary ti mer/PWM2
input or output.
Timer 2 Input/Output—T2 (T2P2)
15
P0.6
D ig ital GPIO and Ti mer 2 I/O. As T2 this p in is the pr imary ti mer/PWM2
input or output.
Timer 2 Secondary Output—T2B (T2PB2)
16
P0.7
D ig ital G PIO and Ti mer 2 I/O. As T2B this pin is the secondary
timer/PWM2 input or output.
*The secondary pin is not supported for timer 1 in the MAXQ7667.
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