DS2408 Maxim, DS2408 Datasheet - Page 29

• Manufacturer Part Number: DS2408
• Description: The DS2408 is an 8-channel, programmable I/O 1-Wire® chip
• Manufacturer: Maxim

Figure 18. DS2408 AS SLAVE INTERFACE FOR INTELLIGENT DISPLAY
Figure 19. DS2408 AS MICROCONTROLLER PORT EXPANDER
5VDC
GND
1W
VCC
MICROCONTROLLER
WITH FEW I/O PINS
1
2
3
4
PIC12C508
VCC
OSC1/P5
OSC2/P4
CLR/P3
24 I/O LINES OR
3 BYTE-WIDE
BUSES FROM A
SINGLE PIN
P2/CK
VCC
GND
P0
P1
3
4
5
DS2408
VCC
GND
IO
8
7
6
5
VCC
RSTZ
P0
P1
P2
P3
P4
P5
P6
P7
10K
2
14
13
12
11
9
8
7
10
1
1
2
3
2
DS9503
VC
C
3
4
29 of 39
5
6
5
4
6
7
8
9
10
VCC
VCC
VCC
47U
3
4
5
3
4
5
3
4
5
VCC
47
VCC
IO
GND
VCC
IO
GND
VCC
IO
GND
DS2408
VCC
DS2408
DS2408
RSTZ
RSTZ
RSTZ
P0
P1
P2
P3
P4
P5
P6
P7
P0
P1
P2
P3
P4
P5
P6
P7
P0
P1
P2
P3
P4
P5
P6
P7
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
GND
VCC
D/ C
R/ W
S TB
D0
D1
D2
D3
D4
D5
D6
D7
LEDA
LEDK
CONTRAST
2
14
13
12
11
9
8
7
10
2
14
13
12
11
9
8
7
10
2
14
13
12
11
9
8
7
10
LCD Display
Local iButton Probe
Select
Down
Up
DS2408