AVDD
DVDD
VSS
X-axis
Transducer
Y-axis
Transducer
SDA
SCL
INTERNAL
OSC
CLOCK
GEN
MUX
C-to-V
CONVERTER
AMP
ADC
I
2
C
Z-axis
Transducer
OFFSET
TRIM
GAIN
TRIM
CONTROL LOGIC
INT
Figure 3. Simplified Accelerometer Functional Block Diagram
Table 2. Maximum Ratings
(Maximum ratings are the limits to which the device can be exposed without causing permanent damage.)
Rating
Maximum Acceleration (all axes, 100
μs)
Analog Supply Voltage
Digital I/O pins Supply Voltage
Drop Test
Storage Temperature Range
Symbol
g
max
AV
DD
DV
DD_IO
D
drop
T
stg
Value
10,000
-0.3 to +3.6
-0.3 to +3.6
1.8
-40 to +125
Unit
g
V
V
m
°C
ELECTRO STATIC DISCHARGE (ESD)
WARNING: This device is sensitive to electrostatic discharge.
Although the Freescale accelerometer contains internal 2000 V ESD protection circuitry, extra precaution must be taken by
the user to protect the chip from ESD. A charge of over 2000 V can accumulate on the human body or associated test equipment.
A charge of this magnitude can alter the performance or cause failure of the chip. When handling the accelerometer, proper ESD
precautions should be followed to avoid exposing the device to discharges which may be detrimental to its performance.
Table 3. ESD And Latch-up Protection Characteristics
Rating
Human Body Model
Machine Model
Charge Device Model
Latch-up current at T
A
= 85°C
Symbol
HBM
MM
CDM
Value
±2000
±200
±500
±100
Unit
V
V
V
mA
MMA7660FC
Sensors
Freescale Semiconductor
7
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
