ds2482-101 Maxim Integrated Products, Inc., ds2482-101 Datasheet - Page 5

• Manufacturer Part Number: ds2482-101
• Description: Single-channel 1-wire Master With Sleep Mode
• Manufacturer: Maxim Integrated Products, Inc.

Figure 1. Block Diagram
Note 12: Applies to SDA, SCL, and AD0.
Note 13: The input/output pins of the DS2482-101 do not obstruct the SDA and SCL lines if V
Note 14: The DS2482-101 provides a hold time of at least 300ns for the SDA signal (referred to the V
Note 15: The maximum t
Note 16: A fast-mode I
Note 17: C
Single-Channel 1-Wire Master with Sleep Mode
SO
1
2
3
4
5
6
7
8
PIN
bridge the undefined region of the falling edge of SCL.
then be met. This is automatically the case if the device does not stretch the low period of the SCL signal. If such a device
does stretch the low period of the SCL signal, it must output the next data bit to the SDA line t
250 = 1250ns (according to the standard-mode I
Bus Specification Version 2.1 are allowed.
B
—Total capacitance of one bus line in pF. If mixed with high-speed-mode devices, faster fall times according to I
WLP
B3
C3
C2
B1
B2
A1
A2
A3
_______________________________________________________________________________________
NAME
PCTLZ
2
SLPZ
GND
SDA
AD0
C bus device can be used in a standard-mode I
SCL
V
HD:DAT
IO
CC
SLPZ
SDA
SCL
AD0
Power-Supply Input
Input/Output Driver for 1-Wire Line
Ground Reference
I
I
Active-Low Control Output for an External p-Channel MOSFET. Provides extra power to the 1-Wire
line, e.g., for use with 1-Wire devices that require a higher current temporarily to operate.
Active-Low Control Input to Activate Low-Power Sleep Mode. This pin should be driven by a
push-pull port.
I
need only be met if the device does not stretch the low period (t
2
2
2
C Serial Clock Input. Must be connected to V
C Serial Data Input/Output. Must be connected to V
C Address Input. Must be connected to V
CONFIGURATION
CONTROLLER
INTERFACE
REGISTER
I
2
C
2
C bus specification) before the SCL line is released.
INPUT/OUTPUT
CONTROLLER
T-TIME OSC
READ DATA
REGISTER
REGISTER
STATUS
2
C bus system, but the requirement t
CC
FUNCTION
DS2482-101
or GND.
CC
through a pullup resistor.
XCVR
LINE
CC
through a pullup resistor.
CC
is switched off.
LOW
IO
PCTLZ
IH(MIN)
) of the SCL signal.
R(MAX)
Pin Description
of the SCL signal) to
SU:DAT
+ t
SU:DAT
≥ 250ns must
= 1000 +
2
C-
5