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Philips Semiconductors
General Description
1. General Description
The P89LPC920/921/922 is a single-chip microcontroller designed for applications demanding high-integration, low cost
solutions over a wide range of performance requirements. The P89LPC920/921/922 is based on a high performance processor
architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. Many system level
functions have been incorporated into the P89LPC920/921/922 in order to reduce component count, board space, and system
cost.
Pin configuration
20-Pin TSSOP, DIP Package
Logic symbol
KBI0
KBI1
KBI2
KBI3
KBI4
KBI5
KBI6
KBI7
CLKOUT
2003 Dec 8
KBI0/CMP2/P0.0
P1.7
P1.6
RST/P1.5
VSS
XTAL1/P3.1
CLKOUT/XTAL2/P3.0
INT1/P1.4
SDA/INT0/P1.3
SCL/T0/P1.2
CMP2
CIN2B
CIN2A
CIN1B
CIN1A
CMPREF
CMP1
T1
XTAL2
XTAL1
P0.1/CIN2B/KBI1
1
20
P0.2/CIN2A/KBI2
2
19
P0.3/CIN1B/KBI3
3
18
P0.4/CIN1A/KBI4
4
17
P0.5/CMPREF/KBI5
5
16
VDD
6
15
P0.6/CMP1/KBI6
7
14
P0.7/T1/KBI7
8
13
P1.0/TXD
9
12
P1.1/RXD
10
11
V
V
DD
SS
P89
LPC920
/921/
922
9
User's Manual - Preliminary -
P89LPC920/921/922
TxD
RxD
T0
SCL
INT0
SDA
INT1
RST
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