DS1615 Maxim Integrated Products, DS1615 Datasheet - Page 14

• Manufacturer Part Number: DS1615
• Description: IC RECORDER TEMP 5V 16-DIP
• Manufacturer: Maxim Integrated Products
• Type: Temperature Recorderr

Specifications of DS1615

• Memory Size: 32B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: 3-Wire Serial
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TLF - Temperature Low Flag - A logic 1 in the Temperature Low Flag bit indicates that the temperature
is/has been less than or equal to the value in the Temperature Low Threshold register. If TLIE is also a
logic 1, the
THF - Temperature High Flag - A logic 1 in the Temperature High Flag bit indicates that the temperature
is/has been greater than or equal to the value in the Temperature High Threshold register. If THIE is also
a logic 1, the
ALMF - Alarm Flag - A logic 1 in the Alarm Flag bit indicates that the current time has matched the time
of day Alarm registers. If the AIE bit is also a logic 1, the
writing this bit to a logic 0.
SAMPLE RATE REGISTER
The data sample rate for the DS1615 can range from once per minute to once per 255 minutes. The rate
is equal to the value written to the Sample Rate register multiplied by one minute.
This register can only be written to a new value when the MEM CLR bit in the Status register is set to 1.
In other words, once a datalog mission has started, it cannot be changed without first issuing the Clear
Memory command.
The Sample Rate register is cleared by issuing the Clear Memory command.
START DELAY RESISTER
The Start Delay register determines the amount of delay before the DS1615 begins to take temperature
measurements. The amount of the delay is roughly equal to the value in the register multiplied by one
minute. If the register contains 00h, the first sample will begin when the seconds register rolls over from
59 to 00.
The value in this register decrements each time the seconds register rolls over from 59 to 00 until the Start
Delay register reaches a value of 00h.
TEMPERATURE HIGH THRESHOLD REGISTER
This register determines the high threshold for interrupt generation from the thermal sensor. If the
temperature is greater than or equal to the value in this register, an interrupt will be activated if the
Temperature High Interrupt Enable (THIE) bit is set to a logic 1.
TEMPERATURE LOW THRESHOLD REGISTER
MSb
MSb
MSb
MSb
SR7
TH7
TL7
D15
D7
INT
INT
pin will go low. TLF is cleared by writing this bit to a logic 0.
SR6
TL6
D14
TH6
pin will go low. THF is cleared by writing this bit to a logic 0.
D6
SR5
TL5
D13
TH5
D5
SR4
D12
TL4
D4
TH4
14 of 24
SR3
D11
TL3
D3
TH3
INT
pin will go low. ALMF is cleared by
D10
SR2
TL2
D2
TH2
SR1
TL1
D9
D1
TH1
SR0
TL0
D8
D0
TH0
LSb
LSb
LSb
LSb