UZZ9001 NXP Semiconductors, UZZ9001 Datasheet - Page 8

• Manufacturer Part Number: UZZ9001
• Manufacturer: NXP Semiconductors

Specifications of UZZ9001

• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
Magnet lost condition
If both offset corrected input signal of sensor 1 and
sensor 2 are below the lost magnet threshold then the
failure ‘Magnet lost’ is assumed.
Offset trimming
To achieve a linear output characteristic, it is necessary to
shift the offsets of the two input signals to the input stage
of the UZZ9001. For this reason a sensor offset
cancellation procedure has been implemented in the
UZZ9001 which is started by sending a special serial data
protocol to the UZZ9001. This trimming procedure is
required for both input signals.
Table 3 Definition of the trim interface signals
2000 Nov 27
handbook, full pagewidth
low level of DATA_CLK, SMODE
high level of DATA_CLK, SMODE
rise and fall time of DATA_CLK and SMODE signal edges
(10 to 90% V
DATA_CLK frequency
Sensor Conditioning Electronic
DATA_CLK
(input at pin 9)
SMODE
(input at pin 10)
TOUT
(output at pin 22)
DD
condition
) and (90 to 10% V
start
PARAMETER
1
Fig.5 Protocol used to set UZZ9001 into trim mode.
DD
)
2
statusbit #
3
8
4
Trim interface
two terminals SMODE (pin 10) and DATA_CLK (pin 9).
The structure of this protocol is shown in Figure 5.
All signal levels of DATA_CLK and SMODE must lie within
the ranges set out in Table 3. The protocol starts with
a falling edge at the SMODE, which must occur at a high
DATA_CLK level. The following five bits are used to code
the message sent to the UZZ9001. They are transferred
via the SMODE and are sampled with the rising edge of
the DATA_CLK. During the fifth high level output of
DATA_CLK (counted from the start condition onwards),
a rising edge must appear at the SMODE and the
DATA_CLK follows this with one more change to low level
in order to successfully complete the protocol.
The UZZ9001 trim mode serial interface consists of the
5
MIN.
0.1
95
0
8
condition
stop
MAX.
100
T1
5
1
T0
Product specification
UZZ9001
%V
%V
MHB702
UNIT
MHz
ns
DD
DD