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NE1617A View Datasheet(PDF) - NXP Semiconductors.

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NE1617A Datasheet PDF : 30 Pages
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NXP Semiconductors
NE1617A
Temperature monitor for microprocessor systems
Table 3. Device slave address …continued
n.c. = not connected
ADD0[1]
ADD1[1]
Address byte
n.c.
n.c.
0101 010
n.c.
VDD
0101 011
VDD
GND
1001 100
VDD
n.c.
1001 101
VDD
VDD
1001 110
[1] Any pull-up/pull-down resistor used to connect to GND or VDD should be 2 k.
8.3 Registers
The device contains more than 9 registers. They are used to store the data of device
set-up and operation results. Depending on the bus communication (either read or write
operations), each register may be called by different names because each register may
have different sub-addresses or commands for read and write operations. For example,
the configuration register is called as WC for write mode and as RC for read mode.
Table 4 shows the names, commands and functions of all registers as well as the register
POR states.
Remark: Attempting to write to a read-command or read from a write-command will
produce an invalid result. The reserved registers are used for factory test purposes and
should not be written.
NE1617A
Product data sheet
Table 4. Register assignments
Register name Command byte
RIT
00h
RET
01h
RS
02h
RC
03h
RCR
04h
RIHL
05h
RILL
06h
REHL
07h
RELL
08h
WC
09h
WCR
0Ah
WIHL
0Bh
WILL
0Ch
WEHL
0Dh
WELL
0Eh
OSHT
0Fh
-
10h
-
11h
-
12h
-
13h
POR state
0000 0000
0000 0000
n/a
0000 0000
0000 0010
0111 1111
1100 1001
0111 1111
1100 1001
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Function
read internal or local temp byte
read external or remote temp byte
read status byte
read configuration byte
read conversion rate byte
read internal temp high limit byte
read internal temp low limit byte
read external temp high limit byte
read external temp low limit byte
write configuration byte
write conversion rate byte
write internal temp high limit byte
write internal temp low limit byte
write external temp high limit byte
write external temp low limit byte
one-shot command
reserved
reserved
reserved
reserved
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 20 March 2012
© NXP B.V. 2012. All rights reserved.
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