se95u NXP Semiconductors, se95u Datasheet - Page 8

• Manufacturer Part Number: se95u
• Description: Ultra High Accuracy Digital Temperature Sensor And Thermal Watchdoge
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SE95_5
Product data sheet
8.2 Register list
8.3 Register pointer
false alert if the address 0Ch is sent and cannot be active on the I
used. Consider using the SE98 since it supports SMBus ARA as well as time-out features
and provides 1 C accuracy.
Table 4.
The SE95 contains 7 data registers. The registers can be 1 byte or 2 bytes wide, and are
defined in
register during I
and reserved for manufacturer use. Note that when reading a two-byte register, the host
must provide enough clock pulses as required by the I
for the device to completely return both data bytes. Otherwise the device may hold the
SDA line in LOW state, resulting in a bus hang condition.
Table 5.
The register pointer or pointer byte is an 8-bit data byte that is equivalent to the register
command in the I
accessed for a write or read operation. Its values are listed as pointer values in
For the device register I
be included within the command as illustrated in the I
Section
The command statements for writing data to a register must always include the pointer
byte; while the command statements for reading data from a register may or may not
include it. To read a register that is different from the one that has been recently read, the
pointer byte must be included. However, to re-read a register that has been recently read,
the pointer byte may not have to be included in the reading.
Register
name
Conf
Temp
Tos
Thyst
ID
Reserved
Reserved
MSB
1
8.7.
Table
Address table
Register table
Pointer
value
01h
00h
03h
02h
05h
04h
06h
Ultra high accuracy digital temperature sensor and thermal watchdog
2
5. The registers are accessed by the value in the content of the pointer
C-bus communication. The types of registers are: read only, read/write,
2
0
C-bus definitions and is used to identify the device register to be
R/W
R/W
read
only
R/W
R/W
read
only
N/A
N/A
Rev. 05 — 13 December 2007
2
C-bus communication, the pointer byte may or may not need to
POR
state
00h
N/A
5000h
4B00h
A1h
N/A
N/A
0
Description
configuration register: contains a single 8-bit data byte;
to set an operating condition
temperature register: contains two 8-bit data bytes; to
store the measured T
overtemperature shutdown threshold register: contains
two 8-bit data bytes; to store the overtemperature
shutdown limit; default T
hysteresis register: contains two 8-bit data bytes; to
store the hysteresis limit; bit 7 to bit 0 are also used in
OTP (One Time Programmable) test mode to supply
OTP write data; default T
identification register: contains a single 8-bit data byte
for the manufacturer ID code
reserved
reserved
1
2
2
C-bus protocol figures in
C-bus protocol (see
A2
emp
os
hyst
= 80 C
= 75 C
2
C-bus if this address is
A1
© NXP B.V. 2007. All rights reserved.
Section
SE95
Table
LSB
A0
8.7)
8 of 24
5.