STEVAL-MKI024V1
MEMS 3-axis ±2g /±8g smart digital output demonstration board
based on the "nano" accelerometer LIS331DL
Features
■ Graphical user interface
■ Mini USB connector
■ Control switches
■ MEMS sensor
■ LED indicators
■ ST72F65x - USB microcontroller
Description
The STEVAL-MKI024V1 is a demonstration board
designed to provide the user with a complete,
ready-to-use platform for evaluation of the
LIS331DL, the new MEMS belonging to the
"nano" family of ST motion sensors.
STEVAL-CBL005V1
The LIS331DL is the smallest consumer low
power three axes linear accelerometer and it
features digital I2C/SPI serial interface standard
output, smart embedded functions, it has
dynamically user selectable full scales of ±2g
/±8g and it is capable of measuring accelerations
with an output data rate of 100 Hz or 400 Hz.
Data brief
The device may be configured to generate inertial
wake-up/free-fall interrupt signals when a
programmable acceleration threshold is crossed
at least in one of the three axes. Thresholds and
timing of interrupt generators are programmable
by the end user.
In addition to the MEMS sensor, the
demonstration board utilizes an ST72F65x - USB
microcontroller which functions as a bridge
between the sensor and the PC, on which it is
possible to use the graphical user interface (GUI)
included with the kit or dedicated software
routines for customized applications.
April 2009 Doc ID 15563 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic STEVAL-MKI024V1
1 Circuit schematic
Figure 1. Schematic diagram
A
B
C
D
8
TP2
100n F
C19
VCC
5
8877665
2233441
U4
2
1
1
+
C18
2.2uF
Vdd_ dutVddf
C13
+
C11
LE25
D3
D4
10uF
100R
R9
100R
R10
INT2
R13
13
12
GND
Reserved
Vdd_ IO1SCL
0R
0R
R12
INT1
10
9
11
Int2
Int1
GND
CS
cs_pad
8
Reserved
SDO
7
miso
SDA
6
mosi
GND
NC2NC
3
4
5
sck
100n F
Motion Sensor
U1
VDD
14
15
GND
16
7
Current_Measure
6
5
4
J5
iccsel
1
J4
2
6
8
7
GND
SHDN
VOUT
C2-
C1-1C1+
U3
2
3
220n F
220n F
C14
C15
100R
R3
Vddf
100R
R2
C12
100n F
5
VCC
C2+
ST662 ABD
4
2STR2215
Q1
VCC
GR
D2
C17
4.7uF 16V
+
+
C16
4.7uF 16V
3
2
R5
1
R4
10K
RledGled
SO642
Q2
31
470R
2
1K
R8
DFU_SEL
Cosc2
33pF
12MHz
Yoscm
oscin oscout
33pF
Cosc1
100n F
C7
NReset
SW1
Riccsel
10K
icccl k
nRESET
iccsel
iccdata
1 2
3 4
56789 10
ICP
J2
TP1
VCC
1
INT2
2
INT1
3
mosi
4
miso
5
sck
6
cs_pad
7
CS1
SPI
J3
8
7
6
5
4
3
2
180R
1
A
R1
D1
B
2/4 Doc ID 15563 Rev 1
100n F
C6
PD037PD1
36
PB213PB314PB4
+10uF
220n F
C8
VCC
33
+
4.7uF
PC4
PC534PC635PC7
PB5
16
15
47nF
C3
Vss1
32
Vdd1
31
SCK
30
sck
MOSI
mosi
29
MISO
28
miso
SS
Vddf
27
PA7
26
PA6
INT2
25
PA5
INT1
24
PA4
PA3
PA2
PA1
PA0
PB7
PB6
10K
R11
23
ST
PD
22
21
cs_pad
20
19
18
17
R7
10K
D
3
SW3
SW2
2
1
41
42
40
38
43
46
48
47
U2
ST726 5X_TQFP6 4
PWM1
49
PWM0
50
icc sel
RESET
nRESET
51
SCL
52
SDA
53
AIN0
54
AIN1
55
USBEN
56
57
iccclk
58
icc data
Vdd2
59
Vdda
60
Vssa
100n F
C5
+
4.7uF
C2
C4
100n F
+10uF
VCC
C1
5
4
1
3
2
nc
V+
DP
DM
GND
USB_mini_B
J1
61
Vss2
62
OSCIN
63
oscin
oscout
64
UVss1UDM2UDP3UVcc4UVdd
PD239PD3
AIN6
AIN2
AIN344AIN445AIN5
Vpp/ICCSEL
OCMP2
OCMP1
ICCCLK
ICCDATA
OSCOUT
C
5
Vddf6Vssf7PE58PE69PE7
Vddf
1.5K
R6
PB011PB1
12
10
DFU_SEL
CS1
Gled
Rled
C10
C9
STEVAL-MKI024V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
06-Apr-2009 1 Initial release.
Doc ID 15563 Rev 1 3/4
STEVAL-MKI024V1
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4/4 Doc ID 15563 Rev 1
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