DS2407 Dallas Semiconducotr, DS2407 Datasheet - Page 20

• Manufacturer Part Number: DS2407
• Description: Dual Addressable Switch Plus 1K.Bit Memory
• Manufacturer: Dallas Semiconducotr

DS2407 EQUIVALENT CIRCUIT Figure 10
BUS MASTER CIRCUIT Figure 11
The diode and Programming Pulse circuit are not required if one does not intend to program the EPROM cells.
DS2407
The interface is reduced to the 5k
012099 20/31
R
T
X
X
V
V
100
MOSFET
DD
DD
DS5000 OR 8051 EQUIVALENT
1–WIRE INTERFACE
R
T
B) Standard TTL
X
X
BUS MASTER
BUS MASTER
A) Open Drain
T
X
GROUND
R
X
TTL–Equivalent
Open Drain
Port Pins
Port Pin
DATA
5 A
Typ.
pull–up resistor if one does not intend to program the EPROM cells.
5k
V
PGM
PUP
5k
V
5k
PUP
2N7000
S
2N7000
(10 mA min.)
10k
1–WIRE DATA
D
12V
FROM PIO
CONTROL
CONTROL
PROGRAMMING PULSE
D
S
TO PIO
2N7000
D
S
10k
ACTIVITY
TO DATA CONNECTION
OF DS2507
FLIP–FLOP
CHANNEL
LATCH
Q
Q
D
RESET
PIO CHANNEL
470 pF
R
CAPACITOR ADDED TO REDUCE
COUPLING ON DATA LINE DUE TO
PROGRAMMING SIGNAL SWITCHING
D
Q
Q
12V
“1”
S
D
VP0106N3
VP0300L
BSS110
DETECTOR
OR
OR
EDGE
TO DATA CONNECTION
OF DS2506
GROUND
PIO
10M
Typ.