DS2480 Dallas Semiconducotr, DS2480 Datasheet - Page 4

• Manufacturer Part Number: DS2480
• Description: Serial 1.Wire Line Driver
• Manufacturer: Dallas Semiconducotr

STATE TRANSITION DIAGRAM Figure 2
N.C. = UNCONDITIONAL
LEGEND: V
DS2480
042498 4/26
E1h
RESET
SS
P
T
Q
H
ZZZ
VVV
X
110XSS01
DATA MODE
110XSS01
N.C.
MASTER RESET
BINARY VALUE (TYPE OF WRITE TIME SLOT)
1–WIRE SPEED SELECTION CODE
IF LOGIC 1, GENERATES STRONG PULL–UP TO 5V IMMEDIATELY FOLLOWING THE TIME SLOT
TYPE OF PULSE; 0 = STRONG PULL–UP (5V), 1 = PROGRAMMING PULSE (12V)
1 = ARM STRONG PULL–UP AFTER EVERY BYTE; 0 = DISARM
SEARCH ACCELERATOR CONTROL; 1 = ACCELERATOR ON, 0 = ACCELERATOR OFF
CONFIGURATION PARAMETER CODE (WRITE), 000 = READ CONFIGURATION PARAMETER
CONFIGURATION PARAMETER VALUE CODE (WRITE), CONFIGURATION PARAMETER CODE (READ)
DON’T CARE
SOFTWARE
N.C.
TX E3h
111T11Q1
PULSE
CODE = E3h
E3h
111T11Q1
N.C.
ALL OTHER
CODES
POWER OFF
COMMAND MODE
CONFIGURATION
N.C.
STR. PULL–UP NOT ARMED
INACTIVE
CHECK
MODE
N.C.
0ZZZVVV1
0ZZZVVV1
POWER
ACCELERATOR FLAG
ON
ARRIVAL
CHECK SEARCH
PERFORM SEARCH
ACC. OFF
SEQUENCE
N.C.
N.C.
ARRIVAL
101HSS01
CODE
101HSS01
TX
SEARCH
ACCEL.
ACC.ON
100VSSP1
100VSSP1
TX BYTE
N.C.
GENERATE STRONG
N.C.
POWER OFF
PULL–UP TO 5V
STR. PULL–UP
SINGLE BIT
FUNCTION
ARMED