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P89LPC901/902/903
INDEX
User’s Manual - Preliminary -
2003 Dec 8 111
FLASH code 93
organization 25
O
Oscillator
high speed crystal option 27, 28
low speed crystal option 27
medium speed crystal option 27
R-C option 28
watchdog (WDT) option 29
P
Pin configuration 7, 8
Port 0 12, 14, 15
Port 3 12
Ports
additional features 42
I/O 39
input only configuration 41
open drain output configuration 40
Port 0 analog functions 41
Port 2 in 20-pin package 41
push-pull output configuration 41
quasi-bidirectional output configuration 39
Power monitoring functions 73
Power reduction modes 57
normal mode 57
power down mode (partial) 57
Power-down mode (total) 57
Power-on detection 56
R
Real time clock 51
clock sources 51
interrupt/wake up 53
Reset 73
enabling the external reset input pin 73, 100
software reset 91
sources 73