mma2602wr2 Freescale Semiconductor, Inc, mma2602wr2 Datasheet - Page 27
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mma2602wr2
Manufacturer Part Number
mma2602wr2
Description
Dsi Inertial Sensor
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MMA2602WR2.pdf
(48 pages)
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3.6
process as described in the following tables:
Table 9. Power-up or Under-Voltage Reset Initialization Process
Table 10. DSI Clear Command Initialization Process
Internal Delay
Sensors
Freescale Semiconductor
V
#
1 Power up to a Known State
3 Read Fuse Array and Copy to Memory Array (Mirror Registers)
4 Initialize DSI State Machine (the device is ready for DSI Messages)
5 Initialize the DSP (Acceleration Data is Valid)
#
1 the device logic comes out of reset
3 Read Fuse Array and Copy to Memory Array (Mirror Registers)
4 Initialize DSI State Machine (the device is ready for DSI Messages)
5 Initialize the DSP (Acceleration Data is Valid)
V
V
PORVREGA_r
DSI Ready
Following power-up, under-voltage reset or reception of a DSI Clear Command, the device proceeds through an initialization
PORHCAP_r
PORVREG_r
DSP_OUT
BUSIN’
V
V
V
REGA
HCAP
POR
Device Initialization
REG
Description
Description
t
INT_INIT
t
DSI_INIT
t
DSP_INIT
Figure 20. Initialization Timing
t
t
t
t
DSP_INIT
DSP_INIT
DSI_INIT
DSI_INIT
Time
Time
0
0
S Flag ST Flag
S Flag ST Flag
N/A
1
1
0
1
1
1
0
N/A
0
0
0
0
0
0
0
DSI Read Acceleration Data Long response = invalid data.
DSI Read Acceleration Data Long response = invalid data.
DSI Read Acceleration Data Short response = zero.
DSI Read Acceleration Data Short response = zero.
DSI Response
DSI Response
No Response
No Response
No Response
No Response
Normal
Normal
MMA26xxWR
27
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