Datasheet

5 5
4 4
3 3
2 2
1 1
D D C C B B A A
P10 P11 P12 P13 P14 P15 P16 P17 P30 P31 P32 P33 P34 P35
AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0
A8 A9
A10 A11 A12 A13 A14 A15
VCC5
VUNREG
VUNREG VCC3VUNREG
VCC5
VCC5
P1[7..0]
RST
P3[5..0]
AD[7..0]
A[15..8]
XTAL2 XTAL1
nPSEN
ALE
nWR
nRD
nEA_IN
Size Document Number
Sheet o f
Copyright (C) 2003 - Dallas Semiconductor / MAXIM
87-2C420-KIT
Rev B
DS89C450 Evaluation Kit - Power and Header
A
1 6Friday, August 03, 2007
C2
22uF
10v
12
U1 MAX1659
SET
1
SHDN
2
IN3
3
OUT4
4
OUT5
5
IN6
6
IN7
7
GND
8
TP8
VCC3
1 2
+
C6 100uF, 25v
12
TP7
VCC5
1 2
TP9
GND
1 2
JP1
Solder Jumper (closed)
1 2
J4
Header 2x20
P1.0/T2
1
P1.1/T2EX
2
P1.2/RXD1
3
P1.4/INT2
5
P1.5/nINT3
6
P1.3/TXD1
4
P1.6/INT4
7
P1.7/nINT5
8
RST
9
P3.0/RXD0
10
P3.1/TXD0
11
P3.2/nINT0
12
P3.3/nINT1
13
P3.4/T0
14
P3.5/T1
15
P3.6/nWR
16
P3.7/nRD
17
XTAL2
18
XTAL1
19
GND
20
P2.0
21
P2.1
22
P2.2
23
P2.3
24
P2.4
25
P2.5
26
P2.6
27
P2.7
28
PSEN
29
ALE/PROG
30
EA/VPP
31
P0.0/AD0
39
P0.1/AD1
38
P0.2/AD2
37
P0.3/AD3
36
P0.4/AD4
35
P0.5/AD5
34
P0.6
33
P0.7
32
VCC
40
C7
22uF
10v
12
U2 MAX1658
SET
1
SHDN
2
IN3
3
OUT4
4
OUT5
5
IN6
6
IN7
7
GND
8
+
C1 100uF, 25v
12
J1
PJ-002A
IN
1
G1
2
G2
3
JP2
Solder Jumper (closed)
1 2
C14
100nF
10v
12