MMA81XXTKEG

Sensors

8

Freescale Semiconductor

1.4

MODULE INTERCONNECT

A typical satellite module configuration supporting daisy-chain configuration is shown in Figure 1-6. Capacitors C1 and C2

form a filter network for the internal voltage regulator. Two capacitors are shown for redundancy; this configuration improves

reliability in the event of an open capacitor connection. A single 1

μF capacitor may be used in place of C1 and C2, however

BUSOUT. The value of this capacitor is typically 1

μF; however, this depends upon data rates and bus utilization.

Figure 1-6. Typical Satellite Module Diagram

1.5

DEVICE IDENTIFICATION

Thirty-two OTP bits are factory-programmed with a unique serial number during the manufacturing and test. Five additional bits

are factory-programmed to indicate the full-scale range and axis of sensitivity. Device identification data may be read at any time

while the device is active.

BUSRTN

1 nF

CHASSIS

1.00 k

Ω, 1%

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

MMA81XXTKEG/MMA82XXTKEG

N/C

N/C

BUSRTN

BUSIN

CLK

BUSOUT

BUSRTN

GROUND-LOSS DETECTION DISABLED

GROUND-LOSS DETECTION ENABLED

(SINGLE-ENDED SYSTEMS ONLY)

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

MMA81XXTKEG/MMA82XXTKEG

N/C

N/C

BUSRTN

BUSIN

CLK

BUSOUT

BUSRTN

BUSOUT

C1

1

μF

C2

1

μF

N/C

BUSIN

SEE NOTE

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

MMA81XXTKEG/MMA82XXTKEG

N/C

N/C

BUSRTN

BUSIN

CLK

BUSOUT

NOTE: LEAVE OPEN OR CONNECT TO SIGNAL MONITOR.