DS89C450-K00 Datasheet, PDF (11/12 Pages) Maxim Integrated Products – DS89C450 Evaluation Kit

5
4
3
VCC5
U11
D
TX0
TX1
2
1
T1IN
T2IN
T1OUT
T2OUT
5
18
RX0
RX1
3
20
R1OUT
R2OUT
R1IN
R2IN
4
19
13
14
10
17
8
C1+
C1-
V-
Vb-
V+
C2+
C2b+
C2-
C2b-
12
15
16
11
6 _GNDa
GNDb ⁹
MAX203ECW P
C
nLED
P1[7..0]
RN3
SW 5
B
1
2
3
P10
P11
4
P12
5
P13
6
P14
7
P15
8
P16
9
P17
10
RESISTOR SIP - 330 OHM
SW DIP-8
TURN ON TO PULL
PORT 1 LINES LOW
VCC5
U9
1
19
nOE1
nOE2
P10
P11
P12
P13
P14
P15
P16
P17
2
3
4
5
6
7
8
9
I0
I1
I2
I3
I4
I5
I6
I7
nO0
nO1
nO2
nO3
nO4
nO5
nO6
nO7
18
17
16
15
14
13
12
11
74AC540
A
5
4
3
2
1
J2
5
9
DTR0
4
DB9 RS232 FEMALE
CTS0
8
RX0_232
3
RTS0
7
SERIAL PORT 0
LOADER
D
TX0_232
2
DSR0
6
D CD0
1
TX1_232
RX1_232
J3
5
9
DTR1
4
DB9 RS232 FEMALE
CTS1
8
RX1_232
3
RTS1
7
SERIAL PORT 1
TX1_232
2
DSR1
6
D CD1
1
C
U10
20
1
19
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
11
10
LXB10XX
10-SEGMENT RED LED
RN4
2
3
4
5
6
7
8
9
10
VCC3
1
RESISTOR SIP - 330 OHM
VCC5
B
R5
680 Ohm
DS89C4x0 Evaluation Kit - Serial / Port 1
A
Rev B
Copyright (C) 2003 - Dallas Semiconductor / MAXIM
Size A
Document Number 87-2C420-KIT
W ednesday, August 25, 2004
2
Sheet 5 o f 6
1