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8XC251SA, SB, SP, SQ USER’S MANUAL
Index-8
T2, 7-1, 8-3
T2CON, 3-17, 3-19, 8-1, 8-2, 8-10, 8-17, 10-13, C-
2, C-4, C-27
baud rate generator, 10-12
T2EX, 7-1, 8-3, 8-11, 10-12
T2MOD, 3-17, 3-19, 8-1, 8-2, 8-10, 8-16, 13-11,
C-2, C-4, C-28
Target address, 5-4
TCON, 3-17, 3-19, 8-1, 8-2, 8-3, 8-6, 8-8, C-2, C-
4, C-29
interrupts, 6-1
Tech support, 1-7
TH2, TL2
baud rate generator, 10-12, 10-14
THx, TLx (x = 0, 1, 2), 3-17, 3-19, 8-2, C-2, C-4,
C-31, C-32
Timer 0, 8-3–8-8
applications, 8-9
auto-reload, 8-5
interrupt, 8-3
mode 0, 8-3
mode 1, 8-4
mode 2, 8-5
mode 3, 8-5
pulse width measurements, 8-10
Timer 1
applications, 8-9
auto-reload, 8-9
baud rate generator, 8-6
interrupt, 8-6
mode 0, 8-6
mode 1, 8-9
mode 2, 8-9
mode 3, 8-9
pulse width measurements, 8-10
Timer 2, 8-10–8-17
auto-reload mode, 8-12
baud rate generator, 8-14
capture mode, 8-11
clock out mode, 8-14
interrupt, 8-11
mode select, 8-15
Timer/counters, 8-1–8-17
external input sampling, 8-3
internal clock, 8-3
interrupts, 8-1
overview, 8-1–8-3
registers, 8-2
SFRs, 3-19, C-4
signal descriptions, 8-3
See also Timer 0, Timer 1, Timer 2
TMOD, 3-17, 3-19, 8-1, 8-2, 8-3, 8-6, 8-7, 10-11,
C-2, C-4, C-30
Tosc, 2-6
See also Oscillator
TRAP instruction, 5-16, 6-3, 6-5, 6-15, A-25
TXD, 7-1, 10-1
mode 0, 10-4
modes 1, 2, 3, 10-6
U
UART, 10-1
UCON, 4-4–4-6
UCONFIG0, 4-2
UCONFIG1, 4-2
UD flag, 5-18, C-20
V
Vcc, 11-2
during reset, 11-5
power off flag, 12-1
power-on reset, 11-7
powerdown mode, 12-5, 12-6
See also Power supply
Vcc2, 11-2
Vpp, 14-1
requirements, 14-3
Vss1, 11-2
Vss2, 11-2
W
Wait states, 4-12, 5-1, 13-8, A-1, A-11
configurable, 13-8
configuration bits, 4-12
extending ALE, 4-13, 13-10
extending RD#/WR#/PSEN#, 13-8
RD#/WR#/PSEN#, 4-12, 4-13
real-time, 13-10
WAIT# (Wait State) Input, 13-2
Watchdog timer (hardware), 8-16–8-18
enabling, disabling, 8-16
in idle mode, 8-18
in powerdown mode, 8-18
initiating reset, 11-6
overflow, 8-16