DS1854 Ver la hoja de datos (PDF) - Maxim Integrated
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DS1854 Datasheet PDF : 22 Pages
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Dual Temperature-Controlled Resistors with
Two Monitors
PROT
AUX AD
PROT
MAIN MD
PROT
MAIN MD
AD (AUXILIARY DEVICE ENABLE A0h)
DEVICE
ADDRESS MD (MAIN DEVICE ENABLE)
DEVICE ADDRESS ADDRESS
R/W
ADEN ADFIX
EEPROM
128 x 8 BIT
00h-7Fh
STANDARDS
TABLE
SELECT
ADDRESS
R/W
EEPROM
72 x 8 BIT
80h-C7h
TABLE 02
RESISTOR 0
LOOK-UP
TABLE
TABLE
SELECT
ADDRESS
R/W
EEPROM
72 x 8 BIT
80h-C7h
TABLE 03
RESISTOR 1
LOOK-UP
TABLE
SDA
SCL
OUT1
2-WIRE
INTERFACE
ADDRESS
DATA BUS
R/W
Tx FAULT
TxF
ADDRESS
MINT
R/W
PROT
MAIN MD
EEPROM
72 x 8 BIT
80h-C7h
MONITORS LIMIT
HIGH
MONITORS LIMIT
LOW
IN1
OUT2 LOS
INV1
RxL
TEMP INDEX
SRAM
TxF
32 x 8 BIT
60h-7Fh
MINT (BIT)
NOT PROTECTED
TABLE SELECT
TEMP INDEX
TEMP INDEX
RHIZ
H0
RESISTOR 0
50kΩ FULL SCALE
256 POSITIONS
L0
RHIZ
H1
RESISTOR 1
50kΩ FULL SCALE
256 POSITIONS
L1
IN2
RHIZ
MON1
MON2
VCC
GND
WPEN
INV2 VCC
RRHIZ
INTERNAL
VCC TEMP
MUX
VCC
VCC
MUX
CTRL
RWPEN APEN
MPEN
MEASUREMENT
PROT
MAIN MD R/W
A/D
12-BIT
A/D
CTRL
PROT AUX
ALARM FLAGS
TABLE SELECT
ADDRESS
DEVICE ADDRESS
MONITORS LIMIT HIGH
MEASUREMENT
MONITORS LIMIT LOW
TABLE 01
EEPROM
16 x 8 BIT
80h-8Fh
VENDOR
INV1 (BIT)
INV2 (BIT)
APEN (BIT)
MPEN (BIT)
ADEN (BIT)
ADFIX (BIT)
MASKING (TMP, VCC, MON1, MON2)
MINT
INTERRUPT
PROT MAIN
COMP CTRL
COMPARATOR
ALARM FLAGS
Figure 1. DS1854 Block Diagram
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