DS89C450-K00 Datasheet, PDF (8/12 Pages) Maxim Integrated Products – DS89C450 Evaluation Kit

5
P3[5..0]
D
nW R
nRD
P1[7..0]
C
RST
nEA_IN
nPSEN
nLOADER
VCC5
U4A
14
2
3
7
B
74AC125
VCC5
U 4C
14
12
11
7
74AC125
nEA_OUT
A
5
4
3
2
1
VCC5
U3
P30
P31
P32
P33
P34
P35
10
11
12
13
14
15
16
17
P3.0/RXD0
P3.1/TXD0
P3.2/INT0
P3.3/INT1
P3.4T0
P3.5/T1
P3.6/W R
P3.7/RD
P10
P11
P12
P13
P14
P15
P16
P17
1
2
3
4
5
6
7
8
P1.0/T2
P1.1/T2EX
P1.2/RXD1
P1.3/TXD1
P1.4/INT2
P1.5/INT3
P1.6/INT4
P1.7/INT5
9 _RST
31 _EA
29 _PSEN
P0.0/AD0
P0.1/AD1
P0.2/AD2
P0.3/AD3
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
39
38
37
36
35
34
33
32
P2.0/A8
P2.1/A9
P2.2/A10
P2.3/A11
P2.4/A12
P2.5/A13
P2.6/A14
P2.7/A15
21
22
23
24
25
26
27
28
ALE ³⁰
XTAL1 ¹⁹
XTAL2 ¹⁸
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
A8
A9
A10
A11
A12
A13
A14
A15
DS89C4X0
DS89C4x0 DIP-40
Y1
1
2
16.384 MHz
SOCKETED
C16
22pF
10v
C17
22pF
10v
VCC5
AD[7..0]
D
A[15..8]
ALE
C
XTAL1
XTAL2
B
VCC5
14
8
9
7
U 4D
74AC125
14
5
6
7
U4B
74AC125
DS89C4x0 Evaluation Kit - Processor
A
Rev B
Copyright (C) 2003 - Dallas Semiconductor / MAXIM
Size A
Document Number 87-2C420-KIT
Wednesday, August 25, 2004
Sheet 2 o f 6
4
3
2
1