Datasheet

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SBAS203J − MARCH 2002 − REVISED JANUARY 2008
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Serial Data Buffer 1 (SBUF1)
7 6 5 4 3 2 1 0 Reset Value
SFR C1h 00h
SBUF1.7−0 Serial Data Buffer 1. Data for serial Port 1 is read from or written to this location. The serial transmit and receive
bits 7−0 buffers are separate registers, but both are addressed at this location.
Enable Wake Up (EWU) Waking Up from IDLE Mode
7 6 5 4 3 2 1 0 Reset Value
SFR C6h — — — — — EWUWDT EWUEX1 EWUEX0 00h
Auxiliary interrupts will wake up from IDLE. They are enabled with EAI (EICON.5, SFR D8h).
EWUWDT Enable Wake Up Watchdog Timer. Wake using watchdog timer interrupt.
bit 2 0 = Don’t wake up on watchdog timer interrupt.
1 = Wake up on watchdog timer interrupt.
EWUEX1 Enable Wake Up External 1. Wake using external interrupt source 1.
bit 1 0 = Don’t wake up on external interrupt source 1.
1 = Wake up on external interrupt source 1.
EWUEX0 Enable Wake Up External 0. Wake using external interrupt source 0.
bit 0 0 = Don’t wake up on external interrupt source 0.
1 = Wake up on external interrupt source 0.