Rainbow Electronics DS28EA00 - Manual (Page 16)

DS28EA00 1-Wire Digital Thermometer with Sequence Detect and PIO
16 of 29
Figure 10-4. Control Function Flow Chart (continued)
To Figure 10
5
th
Part
To Figure 10
3
rd
Part
From Figure 10
3
rd
Part
Y
F5h
PIO Access
Read?
Y
N
Master
TX Reset?
Bus Master RX
PIO Pin Status
Y
N
A5h
PIO Access
Write?
Bus Master TX new
PIO Output Data Byte
Bus Master TX
inverted new PIO
Output Data Byte
Transmission
OK?
DS28EA00
Updates PIO
Bus Master RX
Confirmation AAh
DS28EA00
Samples PIO Pin
Bus Master RX
PIO Pin Status
Y
N
Master
TX Reset?
N
Y
Bus Master
RX “1”s
Y
N
Master
TX Reset?
Note 1)
See the command
description for the
exact timing of the
PIO pin sampling
and updating.
N
Y
DS28EA00
Samples PIO Pin
1)
1)
1)
From Figure 10
5
th
Part