ds1859 Maxim Integrated Products, Inc., ds1859 Datasheet - Page 13

• Manufacturer Part Number: ds1859
• Description: Ds1859 Dual, Temperature-controlled Resistors With Internally Calibrated Monitors
• Manufacturer: Maxim Integrated Products, Inc.

A description of the registers is below. The registers
are read only (R) or read/write (R/W). The R/W registers
are writable only if write protect has not been asserted
(see the Memory Description section).
Auxiliary Device
Main Device
Note: SRAM defaults are power-on defaults. EEPROM defaults are factory defaults.
MEMORY LOCATION
LOCATION
MEMORY
0C to 0D
0A to 0B
00 to 01
02 to 03
04 to 05
06 to 07
08 to 09
0E to 0F
10 to 11
(hex)
00 to 7F
(hex)
Dual, Temperature-Controlled Resistors with
EEPROM/
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
SRAM
EEPROM/SRAM
EEPROM
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Register Map
____________________________________________________________________
DEFAULT
SETTING
R/W
R/W
(hex)
00
00
00
00
00
00
00
00
00
Internally Calibrated Monitors
DEFAULT SETTING
MON1limhi (MSB to LSB)
TMPwrnhi (MSB to LSB)
TMPwrnlo (MSB to LSB)
V
V
TMPlimhi (MSB to LSB)
TMPlimlo (MSB to LSB)
V
V
NAME OF LOCATION
CC
CC
CC
CC
wrnhi (MSB to LSB)
wrnlo (MSB to LSB)
limhi (MSB to LSB)
limlo (MSB to LSB)
(hex)
00
Bytes designated as "Reserved" have been set aside
for added functionality in future revisions of this device.
NAME OF LOCATION
Standards Data
Contains upper limit settings for temperature.
If the limit is violated, an alarm flag in Main
Device byte 70h is set.
Contains lower limit settings for temperature. If
the limit is violated, an alarm flag in Main
Device byte 70h is set.
Contains upper limit settings for temperature.
If the limit is violated, a warning flag in Main
Device byte 74h is set.
Contains lower limit settings for temperature. If
the limit is violated, a warning flag in Main
Device byte 74h is set.
Contains upper limit settings for V
limit is violated, an alarm flag in Main Device
byte 70h is set.
Contains lower limit settings for V
limit is violated, an alarm flag in Main Device
byte 70h is set.
Contains upper limit settings for V
limit is violated, a warning flag in Main Device
byte 74h is set.
Contains lower limit settings for V
limit is violated, a warning flag in Main Device
byte 74h is set.
Contains upper limit settings for MON1. If the
limit is violated, an alarm flag in Main Device
byte 70h is set.
FUNCTION
FUNCTION
CC
CC
—
CC
CC
. If the
. If the
. If the
. If the
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