DS1921H-F5# Maxim Integrated Products, DS1921H-F5# Datasheet - Page 21

• Manufacturer Part Number: DS1921H-F5#
• Description: IBUTTON THERMOCHRON F5
• Manufacturer: Maxim Integrated Products
• Series: iButton®r

Specifications of DS1921H-F5#

• Rohs Information: IButton RoHS Compliance Plan
• Memory Size: 512B
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MEMORY/CONTROL FUNCTION FLOW CHART Figure 10-4
From Figure 10
To Figure 10
3
3
rd
rd
Part
Part
DS1921 clears Alarm Time
N
DS1921 clears Mission
Stamps and Durations
Sample Rate Register
Time Stamp, Mission
Mission Start Delay,
Histogram Memory
Samples Counter,
DS1921 clears
EMCLR = 1?
MEMCLR = 1
DS1921 sets
DS1921 sets
EMCLR = 0
TX Reset?
Memory
Master
Clear
3CH
Y
Y
Y
N
N
Y
N
Conversion Process
21 of 45
DS1921 Starts
DS1921 sets
Temperature
EMCLR = 0
TX Reset?
Progress?
Mission in
Convert
Master
Temp.
44H
Y
Y
N
N
DS1921 copies Result
DS1921 Performs a
Temp. Conversion
to Address 0211h
Temperature Con-
version Process
End of Process
DS1921 sets
DS1921 sets
TCB\ = 0
TCB\ = 1
N
TX Reset?
Master
Y
DS1921H/Z