Rainbow Electronics DS1857 - Manual (Page 12)

DS1857
Register Map
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).
Dual Temperature-Controlled Resistors with
External Temperature Input and Monitors
12 ____________________________________________________________________
MEMORY LOCATION
(hex)
EEPROM/SRAM R/W
DEFAULT SETTING
(hex)
NAME OF LOCATION FUNCTION
00 to 7F EEPROM R/W 00 Standards Data —
Auxiliary Device
MEMORY
LOCATION
(hex)
EEPROM/
SRAM
R/W
DEFAULT
SETTING
(hex)
NAME OF LOCATION FUNCTION
00 to 01 EEPROM R/W 00 TMPlimhi (MSB to LSB)
Contains upper limit settings for temperature.
If the limit is violated, a flag in Main Device
byte 70h is set.
02 to 03 EEPROM R/W 00 TMPlimlo (MSB to LSB)
Contains lower limit settings for temperature. If
the limit is violated, a flag in Main Device byte
70h is set.
04 to 07 EEPROM R 00 Reserved —
08 to 09 EEPROM R/W 00 V CC limhi (MSB to LSB)
Contains upper limit settings for V CC . If the
limit is violated, a flag in Main Device byte 70h
is set.
0A to 0B EEPROM R/W 00 V CC limlo (MSB to LSB)
Contains lower limit settings for V CC . If the
limit is violated, a flag in Main Device byte 70h
is set.
0C to 0F EEPROM — 00 Reserved —
10 to 11 EEPROM R/W 00 MON1limhi (MSB to LSB)
Contains upper limit settings for MON1. If the
limit is violated, a flag in Main Device byte 70h
is set.
12 to 13 EEPROM R/W 00 MON1limlo (MSB to LSB)
Contains lower limit settings for MON1. If the
limit is violated, a flag in Main Device byte 70h
is set.
14 to 17 EEPROM — 00 Reserved —
18 to 19 EEPROM R/W 00 MON2limhi (MSB to LSB)
Contains upper limit settings for MON2. If the
limit is violated, a flag in Main Device byte 70h
is set.
1A to 1B EEPROM R/W 00 MON2limlo (MSB to LSB)
Contains lower limit settings for MON2. If the
limit is violated, a flag in Main Device byte 70h
is set.
Main Device
Note: SRAM defaults are power-on defaults. EEPROM defaults are factory defaults.