PCA9691BS/1 NXP Semiconductors, PCA9691BS/1 Datasheet - Page 6

• Manufacturer Part Number: PCA9691BS/1
• Description: IC, ADC/DAC, 8-BIT, I2C, 16-HVQFN
• Manufacturer: NXP Semiconductors

Specifications of PCA9691BS/1

• Brief Features: 8bit Successive Approximation A/D Conversion, Low Standby Current
• Supply Voltage Range: 2.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: VQFN
• No. Of: RoHS Compliant
• Ic Function: 8-bit A/D & D/A Converter
• Rohs Compliant: Yes

NXP Semiconductors
PCA9691_2
Product data sheet
7.2 Control byte
Table 4.
The second byte sent to a PCA9691 is stored in its control register and is required to
control the PCA9691 function.
The upper nibble of the control register is used for enabling the analog output, and for
programming the analog inputs as single-ended or differential inputs. The lower nibble
selects one of the analog input channels defined by the upper nibble (see
If the auto-increment flag is set, the channel number is incremented automatically after
each A/D conversion.
If the auto-increment mode is selected and the internal oscillator is used, the analog
output enable flag in the control byte (bit 6) must be set. This allows the internal oscillator
to run continuously, thereby preventing conversion errors resulting from oscillator start-up
delay. The analog output enable flag can be reset at other times to reduce quiescent
power consumption.
Pin
A2
V
V
V
V
V
V
V
V
V
V
V
V
SCL
SCL
SDA
SDA
SDA
SDA
SCL
SCL
SDA
SCL
SCL
SCL
SDA
SDA
SS
DD
SS
SS
SS
SS
DD
DD
DD
DD
SS
DD
A1
SCL
SCL
V
V
V
V
V
V
V
V
SDA
SDA
SDA
SDA
SCL
SCL
V
V
V
V
SCL
SDA
SCL
SDA
SCL
SDA
SS
SS
DD
DD
SS
SS
DD
DD
SS
DD
SS
DD
PCA9691 address map
A0
SDA
SDA
V
V
V
V
V
V
V
V
SCL
SCL
V
V
V
V
SCL
SCL
SDA
SDA
SCL
SCL
SDA
SDA
SDA
SCL
SS
DD
SS
DD
SS
DD
SS
DD
SS
DD
SS
DD
Rev. 02 — 27 January 2010
Bit
A6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
…continued
A4
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A3
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A2
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
A1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
8-bit A/D and D/A converter
R/W
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PCA9691
© NXP B.V. 2010. All rights reserved.
Address Number
8Ch
8Eh
90h
92h
94h
96h
98h
9Ah
9Ch
9Eh
A0h
A2h
A4h
A6h
A8h
AAh
ACh
AEh
B0h
B2h
B4h
B6h
B8h
BAh
BCh
BEh
Figure
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
6).
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