Douwe Egberts Contenta - CPU Circuit Diagram and Connections

1 2 3 4
A
B
C
D
4321
D
C
B
A
Title
Number RevisionSize
Orcad A
Date: 30-Jan-2004 Sheet of
File: Cont_V24C.ddb Drawn By:
1110
V2.4C810900
CONTENTA CPU
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
ENABLE SAFETY
+24V RET. CHECK
WATER LEVEL CHECK
BOILER WATER LEVEL
COLD WATER EMPTY DET.
B2 EMPTY DETECTION
MAIN ON/OFF SWITCH
HOT WATER SWITCH
CUP OF COFFEE SWITCH
COOLING ERROR LED
MAIN POWER LED
COFFEE EMPTY LED
WATER EMPTY LED
B2 COIL
PELTIER
SERIAL OUT
SERIAL IN
HEATER
HOT WATER VALVE
COFFEE VALVE
POT OF COFFEE SWITCH
STOP SWITCH
GND
GND
AGND GND
GND
GND
GND
Uref
ADC CE
I2C DATA
EEPROM CE
+5V
I2C CLOCK
BOILER COLD LED
G1000
12MHz
1 2
C6000
220nF
12
C6010
220nF
1 2
C6030
27pF
V4010
1N4148
12
C2020
10nF
12
C1020
10nF
12
C1000
10nF
12
C6020
27pF
EA/VP
31
X1
19
X2
18
RESET
9
INT0
12
INT1
13
T0
14
T1
15
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
P0.0
39
P0.1
38
P0.2
37
P0.3
36
P0.4
35
P0.5
34
P0.6
33
P0.7
32
P2.0
21
P2.1
22
P2.2
23
P2.3
24
P2.4
25
P2.5
26
P2.6
27
P2.7
28
RD
17
WR
16
PSEN
29
ALE/P
30
TXD
11
RXD
10
D1000
80C52
RC
14
CX
15
+T
12
-T
11
Q
10
Q
9
R
13
N2020B
4538
RC
2
CX
1
+T
4
-T
5
Q
6
Q
7
R
3
N2020A
4538
1 2
R5000
100k
1 2
R5010
100k
1 2
R5030
25k5/1%
1 2
R5020
68k1/1%
1 2
R5050
8k2
1
2
3
D1020A
74HC00
4
5
6
D1020B
74HC00
9
10
8
D1020C
74HC00
12
C6070
10uF
3
2
1
411
+
-
N2010A
LM324
13 12
D1050F
74HC04
9 8 7 6 5 4 3 2
1
R5095
SIL9-1-10k
9 8 7 6 5 4 3 2
1
R5090
SIL9-1-10k
+5V
AGND
COLD WATER VALVE
12
C1005
10nF
+5V
GND
12
C6170
150pF
12
C6180
150pF
AGND
AGND
SDA COIN
SCL COIN