MMA6222EG
Sensors
Freescale Semiconductor 11
2.4 CONTROL TIMING
V
L
≤ (V
CC
- V
SS
) ≤ V
H
, T
L
≤ T
A
≤ T
H
, |ΔT
A
| < 4 K/min unless otherwise specified
Notes:
1. Functionality verified 100% via scan. Timing characteristic is directly determined by internal oscillator frequency.
2. Verified by characterization, not tested in production.
3. Parameters tested 100% at final test.
4. Parameters tested 100% at unit probe.
5. Devices are trimmed at 100 Hz with 1000 Hz low-pass filter option selected.
6. Cutoff frequencies shown are -4dB referenced to 0 Hz response, to correspond with previous specifications.
Ref Characteristic Symbol Min Typ Max Units
106
107
DSP Low-Pass Filter (5)
Cutoff frequency (6)
DSP Low-Pass Filter
Cutoff frequency (-3dB, referenced to 0 Hz)
380
335
400
353
420
371
Hz
Hz
(1)
(1)
108
109
DSP High-Pass Filter
Cutoff frequency
Filter Order
f
C(HPF)
O
HPF
0.095
—
0.1
1
0.105
—
Hz
1
(1)
(1)
110
111
Power-On Recovery Time
POR negated to CS
low
Power applied to X
OUT
, Y
OUT
valid
t
OP
t
XY
—
—
—
—
840
10
μs
ms
(1)
(2)
112 Internal Oscillator Frequency f
OSC
3.8 4.0 4.2 MHz (3)
113 Clock Monitor Threshold f
MON
3.6 — 4.4 MHz (1)
114 Chip Select to Internal Reset (See Figure 2-3) t
CSRES
486 512 538 μs (1)
115
116
117
118
119
120
121
Serial Interface Timing (See Figure 2-4)
Clock period
CS asserted to SCLK high
Data setup time
Data hold time
SCLK low to data out
SCLK high to CS negated
CS negated to CS asserted
t
SCLK
t
CSCLK
t
DC
t
CDIN
t
CDOUT
t
CHCSH
t
CSN
120
60
20
10
—
60
526
—
—
—
—
—
—
—
—
—
—
—
50
—
—
ns
ns
ns
ns
ns
ns
ns
(1)
(1)
(1)
(1)
(1)
(1)
(1)
122
DAC Low-Pass Filter
Cutoff Frequency
f
C
5 10 20 kHz (4)
123 Sensing Element Rolloff Frequency (-3 dB) BW
GCELL
— 3 — kHz (2)
