X95840 Datasheet, PDF (12/13 Pages) Intersil Corporation – Quad Digital Controlled Potentiometers

X95840
STOP condition) following the last bit of the last Data Byte
(See Figure 18).
The Data Bytes are from the memory location indicated by
an internal pointer. This pointer initial value is determined by
the Address Byte in the Read operation instruction, and
increments by one during transmission of each Data Byte.
After reaching the memory location 01Fh (8 decimal) the
pointer “rolls over” to 00h, and the device continues to output
data for each ACK received.
The byte at address 00001000 bin (8 decimal) determines if
the Data Bytes being read are from volatile or non-volatile
memory. See “Memory Description” on page 9.
S
Identification
Signals
t
Byte
from the a
with
Master
r
R/W=0
t
Address
Byte
S _{Identification}
t
Byte
a
with
r
R/W=1
t
S
A
A
C
C
K
K
t
o
p
Signal at SDA
10 10
Signals from the
Slave
0
A
C
K
10 10
A
C
K
1
A
C
K ^{First Read Data}
Byte
Last Read Data
Byte
FIGURE 18. READ SEQUENCE
12
FN8213.1
September 27, 2005