ADXL180WCPZ-RL Analog Devices Inc, ADXL180WCPZ-RL Datasheet - Page 14

• Manufacturer Part Number: ADXL180WCPZ-RL
• Description: IC ACCELEROMETER CONFIG 16-LFCSP
• Manufacturer: Analog Devices Inc
• Series: iMEMS®r

Specifications of ADXL180WCPZ-RL

• Axis: X or Y
• Acceleration Range: ±50g, 100g, 150g, 200g, 250g, 350g, 500g
• Voltage - Supply: 5 V ~ 14.5 V
• Output Type: Analog
• Bandwidth: 100Hz ~ 800Hz Selectable
• Mounting Type: Surface Mount
• Package / Case: 16-LFQFN, CSP Exposed Pad
• Package Type: LFCSP EP
• Operating Supply Voltage (min): 5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• Operating Temperature Classification: Automotive
• Product Depth (mm): 5mm
• Product Height (mm): 1.43mm
• Product Length (mm): 5mm
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Interface: -
• Lead Free Status / Rohs Status: Compliant
• Other names: ADXL180WCPZ-RLCT

ADXL180
MANCHESTER DATA ENCODING
To encode data within the current modulation, the ADXL180
uses Manchester encoding. Manchester encoding works on the
principle of transitions representing binary 1s and 0s, as shown
in Figure 8. Manchester encoding uses a set of predefined start
bits to transmit the clocking within each message, see Figure 9.
The pattern of the start bits allows the receiver to synchronize
itself to the bit stream. These start bits are user selectable.
BUS
CURRENT
BUS
CURRENT
Figure 8. Manchester-1, Start Bits and Phase
I
I
I
I
SIG
IDLE
SIG
IDLE
Figure 9. Manchester-2, Bit Coding
LOGIC 1
LOGIC 0
START BITS
START BITS
LOGIC 0
LOGIC 0
LOGIC 0 LOGIC 1
LOGIC 0 LOGIC 1
Rev. A | Page 14 of 60
Table 6. MAN Options
MAN
0
1
The phase of the Manchester encoded data can be selected via
a bit in the configuration registers. See Figure 8 and Figure 9
for details. The configuration bit that sets the phase of the Man-
chester encoder also sets the value of the two start bits. The start
bits are 1, 0 for Manchester-1 and 0, 0 for Manchester-2. For
phase and start bit information, see Table 6.
OPERATION AT LOW V
The ADXL180 monitors its internal regulator voltage to ensure
proper operation. If the bus voltage drops, or the internal regu-
lator voltage drops below the V
resets. See the Voltage Regulator Monitor Reset Operation
section.
OPERATION AT HIGH V
If the regulator pin detects a high voltage, such as from a
short or leakage condition, the ADXL180 detects an error.
See the Voltage Regulator Monitor Reset Operation section
for more details.
Manchester
Coding
Manchester-1
(Default)
Manchester-2
Start
Bits
1, 0
0, 0
BP
DD
PUR
OR LOW V
reset threshold, the device
Logic 0
Falling edge
Rising edge
DD
Logic 1
Rising edge
Falling edge