1
Pin Connections
TEST7
TEST6
TEST5
12 V
SSA
11 C
REGA
10 TEST4
9 C
REG
5
PCM
6
VSSB
7
BUSIN
8
H
CAP
Definition
This pin must be left unconnected in the application.
This pin must be grounded in the application.
This pin must be grounded in the application.
This pin is the common return for power and signalling.
This pin provides a 4 MHz PCM signal proportional to the acceleration data for test purposes. The output can be enabled or
disabled via OTP. If unused, this pin must be left unconnected in the application. Reference
This pin must be grounded in the application.
This pin is connected to the DSI positive bus node and provides the power supply and communication to the system master.
An external capacitor must be connected to between this pin and the BUSRTN pin. Reference
Figure 1.
This pin rectifies the supply voltage on the BUSIN pin to create the supply voltage for the device. An external capacitor must
be connected between this pin and the BUSRTN pin to store energy for operation during master communication signalling.
Reference
Figure 1.
This pin is connected to the power supply for the internal digital circuitry. An external capacitor must be connected between
this pin and V
SS
. Reference
Figure 1.
This pin must be grounded in the application.
This pin is connected to the power supply for the internal analog circuitry. An external capacitor must be connected between
this pin and V
SSA
. Reference
Figure 1.
This pin is the power supply return node for analog circuitry.
This pin enables test mode, and provides the SPI programming voltage in test mode. This pin is must be grounded in the
application.
This pin must be grounded in the application.
This pin must be grounded in the application.
This pin is the power supply return node for the digital circuitry.
This pin is the die attach flag, and should be connected to VSS in the application. Reference
The corner pads are internally connected to V
SS
.
16 15 14 13
TEST2 1
TEST3 2
TEST1 3
BUSRTN
4
17
Figure 4. Block Diagram
Table 1. Pin Description
Pin
1
2
3
4
5
6
7
Pin
Name
TEST2
TEST3
TEST1
BUSRTN
PCM
VSSB
BUSIN
Formal Name
Test Pin
Test Pin
Test Pin
Ground
PCM
Output
Ground
Supply /
Comm
Hold Capacitor
Digital
Supply
Test Pin
Analog
Supply
Analog GND
Test Pin
Test Pin
Test Pin
Digital GND
Die Attach Pad
Corner Pads
8
HCAP
9
10
11
12
13
14
15
16
17
C
REG
TEST4
C
REGA
VSSA
TEST5
TEST6
TEST7
V
SS
PAD
Corner
Pads
MMA26xxNKW
4
Sensors
Freescale Semiconductor, Inc.
V
SS
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
