SA56004AD,112 NXP Semiconductors, SA56004AD,112 Datasheet - Page 5

• Manufacturer Part Number: SA56004AD,112
• Description: IC TEMP SENSOR 8-SOIC
• Manufacturer: NXP Semiconductors

Specifications of SA56004AD,112

• Package / Case: 8-SOIC (3.9mm Width)
• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Temperature Threshold: + 165 C
• Full Temp Accuracy: 1 %
• Digital Output - Bus Interface: SMBus
• Digital Output - Number Of Bits: 11 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Description/function: Digital Temperature Sensor
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Current: 500 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-3615 - DEMO BOARD I2C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-3329-5; 935274525112; SA56004AD

NXP Semiconductors
7. Functional description
SA56004X_5
Product data sheet
7.1 Serial bus interface
7.2 Slave address
7.3 Register overview
Refer to
The SA56004X should be connected to a compatible two-wire serial interface System
Management Bus (SMBus) as a slave device using the two device terminals SCLK and
SDATA. The ALERT pin can optionally be used with the SMBus protocol to implement the
ARA response. The controller will provide a clock signal to the device SCLK pin and
write/read data to/from the device through the device SDATA pin. External pull-up
resistors, about 10 k each, are needed for these device pins due to open-drain circuitry.
Data of 8-bit digital byte or word are used for communication between the controller and
the device using SMBus 2.0 protocols which are described more in
interface”. The operation of the device to the bus is described with details in the following
sections.
The SA56004X has a 7-bit slave address register which is factory programmed in OTP
memory. Eight unique devices are available with different slave addresses as defined in
Table 2 “Ordering
conflict, provided that their addresses are unique.
The SA56004X contains three types of SMBus addressable registers. These are
read-only (R), write-only (W), and read-write (R/W). Attempting to write to any R-only
register or read data from any W-only register will produce an invalid result. Some of the
R/W registers have separate addresses for reading and writing operations.
The registers of the SA56004X serve four purposes:
Table 4
register. The data of the temperature-related registers is in 2’s complement format in
which the MSB is the sign bit. The 8-bit data of other registers is in 8-bit straight format.
•
•
•
•
Control and configuration of the SA56004X
Status reporting
Temperature measurement storage
ID and manufacturer test registers
describes the names, addresses, Power-On Reset (POR), and functions of each
Figure 1 “Block
options”. Up to eight devices can reside on the same SMBus without
Rev. 05 — 22 May 2008
diagram”.
Digital temperature sensor with overtemperature alarms
Section 7.10 “SMBus
SA56004X
© NXP B.V. 2008. All rights reserved.
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