DS1921H-F5# Maxim Integrated Products, DS1921H-F5# Datasheet - Page 20

• 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 10-3
From Figure 10
To Figure 10
2
2
nd
nd
Part
Part
Decision made
Decision made
by DS1921
by Master
Master RX
00 Byte
Y
Y
20 of 45
TA1 (T7:T0), TA2 (T15:T8)
(1
Command, Address, Data
from Memory Address
DS1921 sets Memory
st
Master RX Data Byte
(Subsequent Passes)
Master RX CRC16 of
Address = (T15:T0)
Pass); CRC16 of Data
End of Page?
DS1921 sets
Read Mem.
Master TX
EMCLR = 0
TX Reset?
CRC OK?
Master TX
Memory?
w/CRC
Reset
Master
End of
A5H
N
N
Y
Y
N
Y
N
N
ments Address
DS1921 Incre-
Counter
From Figure 10
To Figure 10
4
4
th
th
Part
Part
DS1921H/Z