AH-6120LR EB02 /
AP-6110LR EB02
Operation manual
(Evaluation Board for 6-Axis Motion Sensor and Analog Front End IC)
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Evaluation board/kit and Development tool important notice
1. This evaluation board/kit or development tool is designed for use for engineering evaluation, demonstration,
or development purposes only. Do not use it for other purpose. It is not intended to meet the requirement of
design for finished product.
2. This evaluation board/kit or development tool is intended for use by an electronics engineer, and it is not the
product for consumer. The user should use this goods properly and safely. Seiko Epson dose not assume any
responsibility and liability of any kind of damage and/or fire coursed by usage of it. User should cease to use
it when any abnormal issue occurs even during proper and safe use.
3. The part used for this evaluation board/kit or development tool is changed without any notice.
NOTICE
No part of this material may be reproduced or duplicated in any form or by any means without the written
permission of Seiko Epson. Seiko Epson reserves the right to make changes to this material without notice.
Seiko Epson does not assume any liability of any kind arising out of any inaccuracies contained in this material or
due to its application or use in any product or circuit and, further, there is no representation that this material is
applicable to products requiring high level reliability, such as, medical products. Moreover, no license to any
intellectual property rights is granted by implication or otherwise, and there is no representation or warranty that
anything made in accordance with this material will be free from any patent or copyright infringement of a third
party. This material or portions thereof may contain technology or the subject relating to strategic products
under the control of the Foreign Exchange and Foreign Trade Law of Japan and may require an export license
from the Ministry of Economy, Trade and Industry or other approval from another government agency.
All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective
companies.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Contents
Part 1 : Hardware section
1.
Feature ............................................................................................................................................... 1
2.
Block Diagram ..................................................................................................................................... 1
3.
Hardware Information .......................................................................................................................... 2
4
3.1
Layout Information ......................................................................................................................... 2
3.1
Outside dimension ......................................................................................................................... 3
3.2
SW Function.................................................................................................................................. 4
3.3
Connector pin assignment ............................................................................................................. 4
3.4
Circuit drawing............................................................................................................................... 6
3.5
Parts List ....................................................................................................................................... 7
Typical Operation ................................................................................................................................ 8
4.1
Power Connection Settings ............................................................................................................ 8
4.2
Host Serial Interface Settings......................................................................................................... 8
4.3
Example Sequence ....................................................................................................................... 8
Part 2 : Interface section
1.
2.
3.
4.
Outline................................................................................................................................................. 11
Feature................................................................................................................................................ 11
Block diagram......................................................................................................................................12
PKG Spec ...........................................................................................................................................13
4.1. QFP12-48PIN ...............................................................................................................................13
4.2. PKG Pin Layout（QFP12-48 Pin） ..........................................................................................13
5. Pin Map ...............................................................................................................................................14
5.1. Voltage Supply ..............................................................................................................................14
5.2. Sensor Connection Pin .................................................................................................................14
5.3. Control Pin ....................................................................................................................................15
5.4. Test pin .........................................................................................................................................15
6. Function ..............................................................................................................................................16
6.1. System Interface ...........................................................................................................................16
6.2. Measurement Circuit .....................................................................................................................19
6.3. ADC circuit....................................................................................................................................20
6.4. Digital filter ....................................................................................................................................20
6.5. Power supply and configration control option.................................................................................21
6.5.1. VDDA regulator ......................................................................................................................21
6.5.2. AGND regulator .....................................................................................................................21
6.5.3. VDDL regulator ......................................................................................................................21
6.6. Power supply and connection example options .............................................................................22
6.7. Reset circuit ..................................................................................................................................23
6.7.1. Power on and circuit initialization timing .................................................................................23
6.7.2. External reset control (XRES=H->L->H） ...............................................................................23
6.7.3. Software reset ........................................................................................................................24
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
7.
Command............................................................................................................................................25
7.1. Command table.............................................................................................................................25
7.2. Parameter default table .................................................................................................................25
7.3. Command function ........................................................................................................................26
7.3.1. Measurement start (command: AFh parameter: NONE) ..........................................................26
7.3.2. Measurement stop (command: AEh parameter: NONE) ..........................................................26
7.3.3. REG_ON (command: BFh parameter: NONE) ........................................................................26
7.3.4. REG_OFF (command: BEh parameter: NONE) ......................................................................26
7.3.5. Measurement setting (command: CAh parameter: 3) ..............................................................27
7.3.6. Digital filter setting (command: CCh parameter: 1) ..................................................................29
7.3.7. Read data (command: 5-h Read Data: 2).............................................................................30
7.3.8. General port setting (command: D5h parameter: 1) ................................................................30
7.3.9. Software reset (command: 99h parameter: NONE) .................................................................30
7.3.10.
NOP (command: 00h parameter: NONE) ............................................................................31
7.4. Power on sequence ......................................................................................................................31
8. Absolute maximum ratings...................................................................................................................32
9. Recommended operation conditions ....................................................................................................32
10. DC characteristics ...............................................................................................................................33
11. AC characteristics................................................................................................................................35
11.1.
Oscillating frequency .................................................................................................................35
11.2.
Serial interface ( default : DOUT hold mode ) .............................................................................36
11.3.
Reset ........................................................................................................................................37
12. Package outer dimension ....................................................................................................................38
12.1.
QFP12-48PIN............................................................................................................................38
13. Digital filter characteristics ...................................................................................................................39
14. Wiring example....................................................................................................................................40
15. The method of output code stabilization………………………………………………………………………...41
16. The method of analog output monitor…………………………………………………………………………...42
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Part 1 : Hardware section
1. Feature
AH-6120LR EB02 or AP-6110LR EB02 is an evaluation board which carries motion sensor (AH-6120LR
or AP-6110LR) and Analog Front End IC (S1A15001).
It has SPI interface terminal to connect external microcontroller to evaluate as a motion sensor module
with digital output and/or a motion sensor.
I/F Signal terminal: XCS, SCLK, DOUT, DIN, DE
Power supply: VDDI, VDD, VSS
Sampling rate: 977 sps (clock frequency 2.0MHz.)
It is possible to input clock externally 2.048MHz to achieve 1k samples per second.
2. Block Diagram
AH 6120LR EB02
AP-6110LR EB02
S1A15001 (U2)
VDD
CN1
VDDI
CN2
External Power
VSS
CN9
External Power
VDDA
CN3
VDDL
CN4
External Power
(VDD)
Reset SW
RESET
Power
Supply
(RSW1)
SG-8003CE
Crystal Oscillator
CLK
(VDDI)
(VSS)
(U13)
XCS, SCLK,
DIN, DOUT,
AH-6120LR or
AP-6110LR
Motion Sensor
(U1)
Pins
CN10
Target Board
DE, DIO
CN11 / CN12
Signal monitor
Fig. 2.1 Block Diagram
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
1
3. Hardware Information
3.1. Layout Information
VDDL-IN
VDDA_G-IN
VSS-IN
VDD-IN
VDDI-IN
VDDA-IN
CN2
CN1
CN9_1
CN4
CN3
CN8
Power
Supply
I/F Terminal
Pin
CN12
CN10
Extension
connector
U1
U2
S1A15001
AH-6120LR
or
AP-6110LR
CN5
U14
CN9_2
CN6
CN7
CN11
Extension
connector
U13
VSS-IN
RSW
1
Crystal
Oscillator
SG-8003CE
Extension
connector
CLK Pin
Reset SW
Fig. 3.1 Parts Layout (Surface)
SW101
SW102
Fig. 3.2 Parts Layout (Back)
External dimension: 45 x 35 mm
Through-hole distance: 39 x 29 m
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
2
3.2. Outside dimension
Fig. 3.3 Outside dimension (unit:mm)
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
3
3.3. SW Function
Table 3.1 SW Function
Location
Function
SW101 XEN18
VDDL regulator
“L”: Enable
“H”: Disable External Power
XEN28
VDDA regulator
“L”: Enable
“H”: Disable External Power
SW102 TEST1
Fixed: connect to “L”=VSS
TEST2
Fixed: connect to “L”=VSS
3.4. Connector pin assignment
Table 3.2 CN10 Connecter pin Assignment
Pin No
Name
-
DIO
-
DE
Note
General I/O port
Non-measuring (Before measurement start command input)
Enable I/F signal acceptance condition
“H” is reset released.
Under measuring flag. (start to stop) Enable ADC data read.
“H” is data updated.
-
DIN
-
DOUT
-
SCLK
-
XCS
Data input terminal
Data
output terminal
All terminals
disable when chip select is non-active
All terminals disable when chip select is non-active
Data transmitting clock input. Max:10MHz
Chip select terminal
“L”: active. It’s possible data/command input
“H”: non active
Table 3.3 CN11 Connecter pin Assignment
Pin No
Name
4
VOAX
Accelerometer X monitor
5
VOAY
Accelerometer Y monitor
6
VOAZ
Accelerometer Z monitor
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Note
4
Table 3.4 CN12 Connecter pin Assignment
Pin No
Name
Note
2N
VREF_GY
Gyro sensor Vref Y monitor
P2
VOUT_GY
Gyro sensor Vout Y monitor
1N
VREF_GX
Gyro sensor Vref X monitor
P1
VOUT_GX
Gyro sensor Vout X monitor
P3
VOUT_GZ
Gyro sensor Vout Z monitor
N3
VREF_GZ
Gyro sensor Vref Z monitor
Table 3.5 CN5 Connecter pin Assignment
Pin No
Name
Note
-
CLK
Clock input(Please refer to Fig.3.1 Parts Layout(Surface))
-
VSS
GND
Table 3.6 CN6 Connecter pin Assignment
Pin No
Name
Note
-
ITRS
Test pin
-
ITRS
Test pin
Table 3.7 CN7 Connecter pin Assignment
Pin No
Name
7
AIN7
Analog signal input
8
AIN8
Analog signal input
-
TSEN
Test pin
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Note
5
3.5. Circuit drawing
open
Fig3.4 AH-6120LR EB02 / AP-6110LR EB02 Circuit Drawing
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
6
3.6. Parts List
Table 3.8 AH-6120LR EB02 / AP-6110LR EB02 Parts List
Location
Parts Name
Spec
Number
Manufacture
Motion Sensor
U1
AH-6120LR / AP-6110LR
1
Seiko Epson
Analog front end IC
U2
S1A15001
1
Seiko Epson
Crystal Oscillator
U13
SG-8003CE
1
Seiko Epson
Universal Logic
U14
SN74LVC1G34DCKR
1
Texas Instruments
1
Rohm
6
Rohm
6
KOA
1
Murata
GRM188B11E104KA01D
0.1uF,25V+-10%
10
Murata
Tip Resistance
R11
Tip Resistance
R1,R2,R3,R4,R5,R6
Tip Resistance
R101,R103,R104,
R107,R108,R109
Ceramic Capacitor
C11
Ceramic Capacitor
C12,C52,C62,C72A,
C72B,C82,C101,
C102,C103,C104
MCR03EZPJ103
10k ohm
MCR03EZPJ303
30k ohm
RK73Z1ETTP
0 ohm
GRM188B11E103KA01D
0.01uF,25V+-10%
Ceramic Capacitor
C51,C61,C71,C81,
C105
GRM21BB31A106KE18
10uF,10V+-10%
5
Murata
Ceramic Capacitor
C1,C2,C3,C4,C5,C6
,
C7,C8,C9
GRM188B11H223KA01D
22nF 16V+-10%
9
Murata
Switch
SW101,102
CAS-D20TB2
2
Copal.
Switch
RSW1
SKRTLBE010
1
Alps Electric
CN1,CN2,CN3,CN4,
Connecter
CN5,CN6,CN8,
CN9_1,CN9_2
WL-1(2pin)
9
Mac8
Connecter
CN7,CN11
WL-1(3pin)
2
Mac8
Connecter
CN10,CN12
WL-1(6pin)
2
Mac8
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
7
4. Typical operation
The operation of the EB02 board requires a compatible serial host interface connection through the
appropriate pins on CN10. For full technical information on the interface please refer to the S1A15001
AFE IC Specification.
The following is a brief description of the typical operation and sequence to enable sampling of the U1
6DoF Motion Sensor. Please adjust the settings and configuration to suit your specific application.
4.1. Power Connection Settings
Connect the voltage supply to the EB02 board for system GND and voltage supply refer to Table 4.1.
Table 4.1 Typical Power Connection Settings
External
EB02 Board
XEN28 = LOW
XEN18=LOW
System GND
System 3.3V
VSS
VDD and VDDI
Comment
Use internal regulator controlled by
REG_ON/REG_OFF command
Use internal regulator triggered by
VDD power on
VDDI is the interface voltage supply
(from 1.65V to VDD). In this example,
we assume the interface voltage is
3.3V
4.2. Host Serial Interface Settings
For more detailed information please refer to Section 6.1 and Section 11.2 of the S1A15001 AFE IC
Specification.
8-bit SPI interface
Polarity = 0, Phase = 0 (SCLK is idle LOW, data capture on rising edge)
Connection through I/F Pin Terminal or CN1
SCLK Frequency Max 10MHz
4.3. Example Sequence
The example sequence will configure the S1A15001 AFE IC with the following settings:
3-axis Gyro AIN1, AIN2, AIN3
3-axis Accelerometer AIN4, AIN5, AIN6
Temp-Volt
Sampling Rate = 2MHz/2048 = 977sps
FIFO Setting = 1 Register/Channel
Digital Filter = All channels 250Hz
The following is description of a typical sequence and serial communication for obtaining sensor data
using the EB02 board.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
8
1. The general sequence from power-on condition is to first issue a SOFTWARE RESET to place
the S1A15001 U2 into a known state.
2. A short delay is required for reset recovery before any further commands are issued.
a. The host should wait for atleast 3 CLK periods to guarantee 2 rising edge CLK cycle
periods has taken place, or
b. The host can sample the DE output pin for a “HIGH” state after issuing the SOFTWARE
RESET command to determine when the reset is completed.
3. Send the MEASUREMENT SETTING to select which analog inputs will be enabled for sampling.
a. For typical case, AIN1 ~ AIN6 is enabled for sampling of the 3-axis gyro and 3-axis
accelerometer sensors, and Temp-Volt is enabled to sample the temperature.
4. Send the DIGITAL FILTER SETTING command to select the desired cutoff frequency of each
analog input (250Hz, 125Hz or bypass).
5. Send the REG_ON which will turn on the internal voltage supply regulator for VDDA (which
typical supplies power to the 6DoF sensor IC)
6. A minimum 500msec delay is required to allow the regulator supply to stabilize
7. Send the MEASUREMENT START to enable the internal sampling logic.
The DE signal of that time goes LOW.
8. Wait for the DE signal to go HIGH.
9. Send READ DATA with the desired AINx channel in one CONTINUOUS DATA READ or
individual READ DATA commands. This should be completed before the DE signal goes LOW.
10. To read another set of sensor data goto to step 8.
11. When sensor sampling is complete, send MEASUREMENT STOP to disable the internal
sampling logic.
12. Send REG_OFF which will turn off the internal regulator supply VDDA to the 6DoF sensor.
13. Sequence Complete.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
9
System Power
On
No
DE =
HIGH?
Software Reset,
TXdata={0x99}
RXdata={0x--}
Delay 1uS or
Wait for DE = HIGH
Continuous Data Read
TXdata={0x50,0x00,0x51,0x00,0x52,
0x00,0x53,0x00,0x54,0x00,
0x55,0x00,0x58,0x00,0x00}
RXdata={0x--,Byte1,Byte0,Byte1,Byte0,
Byte1,Byte0,Byte1,Byte0,Byte1,Byte0,
Byte1,Byte0,Byte1,Byte0}
Measurement Setting
TXdata={0xCA, 0x13, 0x00}
RXdata={0x--, 0x--}
No
Done?
Digital Filter Setting
TXdata={0xCC, 0x00,0x00}
RXdata={0x--, 0x--, 0x--}
Yes
Measurement Stop
TXdata={0xAE}
RXdata={0x--}
REG_ON
TXdata={0xBF}
RXdata={0x--}
REG_OFF
TXdata={0xBE}
RXdata={0x--}
Delay 500mS
End
Measurement Start
TXdata={0xAF}
RXdata={0x--}
Fig. 4.1 Example Sequence Flow Diagram
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
10
Part 2 : Interface section
1. Outline
This product offers an optimum AFE (Analog Front End)-IC for motion sensing that transfers analog signals
from a multi axis sensor into a digital signal to a CPU.
Analog signals from gyroscope and accelerometer will be converted to digital signal by an embedded 12-bit
A/D converter.
Gyroscope signals are measured with high accuracy by the Out-Vref differential voltage measurement and
removal of common mode voltage on the x, y, z for each axis.
The AFE IC provides a 1 chip solution for a high accuracy measurement circuit and reduce system
component count for the addition of motion sensing function being easily added to an equipment.
2. Feature
Embedded 8ch motion sensor measurement circuit (Gyro=3 channel , Acceｌerometer=3 channel)
Gyro sensor input: Differential 3ch
The Gyroscope signal is measured with high accuracy by Out-Vref differential voltage
measurement.
Available common “0 point voltage” of x, y, z each axis.
Accelerometer input: Single input 3 channel
Maximum input range: 0V to VDDA
Embedded 12-bit SAR ADC
ADC resolution: 12bits
Sampling rate: 0.5~8kHz ( at CLK=2.048MHz )
Embedded digital filter: LPF (at sampling frequency fs = 1kHz)
250Hz, 125Hz, or bypass
Embedded voltage regulator for sensor drive / analog circuit
VDDA=3.0V (VDD>=3.2V)
VDDL=1.8V
Embedded Temperature voltage circuit
Scale Factor 3.6mV/℃
System interface: SPI
Voltage range: VDD-VSS = 3 to 3.6V (HISD：2.85 to 3.3V typ=3.0V)
VDDA=2.85V to VDD
VDDI=VDDL to VDD
VDDL=1.65 to 1.95V
Operating temperature range : -40 to +85°C
Packaging style: PKG QFP12-48pin
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
9.00mm×9.00mm(body
with pin)
11
3. Block diagram
VDD
VSS
AIN1_P
AIN1_N
AIN2_N
AIN3_P
AIN4
VDDI
CLK
SCLK
M
Control
Logic
Digital
Filter
XCS
DIN
DOUT
interface
ADC
12bit
U X
AIN6
Circuit
AIN5
VDDL
System
AIN3_N
Measurement
AIN2_P
VDDA
Voltage
Circuit
DE
DIO1
TEST1
TEST2
AIN7
XEN18
AIN8
XEN28
Temp Voltage
Fig 1 Block diagram
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
12
4. PKG Spec
4.1. QFP12-48PIN
QFP12-48PIN 7.00mm×7.00mm（body）
、9.00mm×9.00mm（with Pin）
、PINpitch：0.5mm
Top View
25PIN
36PIN
37PIN
24PIN
48PIN
13PIN
1PIN
12PIN
Fig 2 PKG
4.2. PKG
PIN Layou
Pin Layout（QFP12-48 Pin）
Table 1 PKG Pin Layout
PIN No
1
2
3
4
5
6
7
8
9
10
11
12
Pin
Name
AIN8
TSEN
NC
VSS(A)
NC
VDDA
VDD
VSS
CLK
NC
NC
NC
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
PIN No
13
14
15
16
17
18
19
20
21
22
23
24
Pin
Name
XRES
XCS
SCLK
VSS
TEST2
TEST1
DOUT
DIN
DIO
DE
XEN28
NC
PIN No
25
26
27
28
29
30
31
32
33
34
35
36
Pin
Name
NC
XEN18
VDDI
VSS(L)
VDDL
VDD
VSS
VSS(A)
VDDA
AIN2N
AIN2P
NC
PIN No
37
38
39
40
41
42
43
44
45
46
47
48
Pin
Name
NC
AIN1N
AIN1P
AIN3P
AIN3N
VSS(A)
ITRS
AIN6
AIN5
AIN4
AIN7
NC
13
5. Pin Map
5.1. Voltage Supply
Table 2 Voltage Supply
Number of
pins
Name
I/O
Connect to
Note
VDD
Power
External power
Voltage supply
Both of 2 VDD (Pin No.7,30) is not connected each in IC.
VSS
VSS(A)
Power
External power
VDDA
Power
VDDL
VDDI
2
Please connect supply each.
Ground terminal
Connect to 0V (GND)
7
Capacitor
Sensor power / Analog circuit power
2
Power
Capacitor
Internal logic power
1
Power
External power
I/F power
1
5.2. Sensor Connection Pin
Table 3 Sensor Connection
I/O
Connect to
AIN1_P
I
G sensor
Gyro sensor out
1
AIN1_N
I
G sensor
Gyro sensor Vref out
1
AIN2_P
I
G sensor
Gyro sensor out
1
AIN2_N
I
G sensor
Gyro sensor Vref out
1
AIN3_P
I
G sensor
Gyro sensor out
1
AIN3_N
I
G sensor
Gyro sensor Vref out
1
AIN4
I
A sensor
Accelerometer out
1
AIN5
I
A sensor
Accelerometer out
1
AIN6
I
A sensor
Accelerometer out
1
AIN7
I
sensor
Sensor out
1
AIN8
I
sensor
Sensor out
1
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Note
Number of
pins
Name
14
5.3. Control Pin
Table 4 Control Pin
Name
I/O
Connect to
XCS
I
MPU
Number of
Note
pins
Chip select terminal
1
“L”: active. It’s possible data/command input
“H”: non active
DIN
I
MPU
Data input terminal
1
All terminals disable when chip select is non-active
DOUT
O
MPU
Data output terminal
1
All terminals disable when chip select is non-active
SCLK
I
MPU
CLK
I
External
Data transmitting clock input. Max:10MHz
1
Clock input. 2.048MHz
1
When sensor signal measurement is not active
1
clock
DE
O
MPU
(Before measurement start command input)
I/F signal is ready condition “H” is reset released.
When sensor signal measurement is active.(measurement start to stop)
Indicates that sensor ADC data read is ready condition.
“H” is data updated and ready.
XRES
I
MPU
System reset
“L”: active
“H”:non active
1
DIO
I/O
－
General I/O port
1
XEN18
I
－
VDDL regulator
1
“L”: Enable（=VSS）
“H”: Disable（=VDDI）
XEN28
I
－
VDDA regulator
1
“L”: Enable（=VSS）
“H”: Disable（=VDDI）
5.4. Test pin
Table 5 test Pin
Name
I/O
Connect to
TEST1
I
－
Number of
pins
Note
Test setting terminal
1
Fixed “L”=VSS
TEST2
I
－
Test setting terminal
1
Fixed “L”=VSS
ITRS
O
－
Test terminal
Left open No connection
1
TSEN
O
－
Test terminal
1
Left open No connection
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
15
6. Function
6.1. System interface
This IC communicates with the host MCU using a SPI serial bus interface.
This serial interface consists of four lines (chip selection (XCS), serial clock (SCLK), serial data input (DIN),
and serial data output (DOUT)).
Data communication is enabled using an active LOW chip select (XCS="L").
The data transfer is done in eight bits. The host MCU inputs serial data sequentially and latched from MSB on
the rising edge of the SCLK serial clock.
It is recommended that the XCS signal be set "H" every eight bits to prevent the malfunction by the noise.
(The internal serial counter is reset at the time the XCS signal is driven HIGH.)
When D0 (or the 8th bit) is latched with the serial transfer clock SCLK, the byte is internally processed. Even if
more data is driven on the serial interface than the required number of parameters defined by each command,
it is invalid and ignored.
■Command Input
The XCS chip select must be set "L" while transmitting 1 byte of serial data (1Packet). The XCS chip select
must be set “L” when SCLK is “L”.
It is necessary to keep XCS at “L” level while transmitting serial data (1packet). When set “H” at XCS during 1
packet transmitting , packet under transmitting is canceled. When “L” is set at XCS again, re-transmitting is
enabled.
XCS
SCLK
DIN
C7 C6 C5 C4 C3 C2 C1 C0
P17 P16 P15 P14 P13 P12 P11 P10
P27 P26 P25 P24 P23 P22 P21 P20
2
4 3
Parameter2
Parameter1
Command
When XCS chip select is set “H” in the middle of a 1 byte serial data (1 packet), the current packet is
canceled. When the XCS chip select is set “L” again, re-transmitting is enabled.
XCS
SCLK
DIN
C7 C6 C5 C4 C3 C2 C1 C0
C7 C6 C5 C4 C3 C2 C1 C0
P17 P16 P15 P14 P13 P12 P11 P10
Command
Parameter1
Invalid Command
XCS
SCLK
DIN
C7-C0
P17-P10
Invalid
Parameter1
Invalid Packet
Command
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
C7-C0
Command
P17-P10
Parameter1
P27-P20
Parameter2
Re-transmitted Packet
16
■Data Read
Please follow the below sequence for “Measurement data reading”. XCS must be set “L” when SCLK is “L”
and the XCS must be hold “L” until data read is complete.
XCS must be set “H” after last bit is transmitted.
XCS
SCLK
DIN
C7 C6 C5 C4 C3 C2 C1 C0
DOUT
*
*
*
*
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Read DATA
Read Command
When XCS is set “H” during read data transmitting, the read condition is canceled. Set XCS “L” again,
issue another command.
Read condition is canceled.
It is nessesary to re-issue the read command again.
again.
XCS
SCLK
C7-C0
C7-C0
DIN
D11-D8
DOUT
Read
Command
D7-D0
D11-D8
Read DATA
Read
Command
Read DATA
Continuous Data Read
XCS
SCLK
Read
AIN1
DIN
DOUT
NOP
Read
AIN 2
D7-0
D11-8
AIN1 data
NOP
Read
AIN 3
D7-0
D11-8
AIN2 data
NOP
Read
AIN 4
D7-0
D11-8
AIN3 data
NOP
Read
AIN 5
D7-0
D11-8
AIN4 data
NOP
Read
AIN 6
D7-0
D11-8
AIN5 data
NOP
NOP
D7-0
D11-8
AIN6 data
When a channel data read command is input during the expected NOP period, the command is invalid and
ignored.
Invalid command
XCS
SCLK
DIN
DOUT
Read
AIN1
Read
AIN2
D11-8
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Read
AIN2
D7-0
AIN1 data
NOP
Read
AIN3
D7-0
D11-8
AIN2 data
NOP
Read
AIN4
D7-0
D11-8
AIN3 data
NOP
D7-0
D11-8
AIN4 data
17
Data Read （FIFO 4register/ch setting）
It has the FIFO function（max:28registers）
XCS
SCLK
DIN
DOUT
Read
NOP
AIN1
NOP
D11-0
AIN1_1
NOP
NOP
Read
NOP
AIN2
D11-0
D11-0
D11-0
AIN1_2 AIN1_3 AIN1_4
Invalid Command Period
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
NOP
NOP
D11-0
D11-0
AIN2_1 AIN2_2
NOP
Read
AIN3 NOP
NOP
NOP
NOP
NOP
D11-0
D11-0
D11-0
D11-0
D11-0
D11-0
AIN2_3 AIN2_4 AIN3_1 AIN3_2 AIN3_3 AIN3_4
Invalid Command Period
Invalid Command Period
18
6.2. Measurement Circuit
The measurement circuit of gyro sensor signal is output to ADC by mixed voltage with combined Out-Vref
differential voltage and AGND (standard voltage).
AGND=1/2xVDDA
Gyro sensor
AIN1_P
Vref
AIN1_N
Out
AIN2_P
Vref
AIN2_N
MUX
X
Out
ADC
Y
AIN3_P
Vref
MUX
Out
Z
AGND
AIN3_N
Fig 3 sensor - SC-Amp connection
Measurement timing
1msec (1kHz)
Meas.
計測
DE
Meas
Meas.
Meas.
Data trans
Data trans
Impossible
Possible
AIN1
AIN2
Measurement timing （As using FIFO
AIN3
AIN4
Meas.
AIN5
AIN6
4Register/ch setting）
1msec (1kHz)
Meas
Meas
DE
Meas
Meas
Meas
Meas
Data trans Impossible
Data trans
Possible
Meas CH
AIN1
AIN2
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
AIN3
AIN4
AIN5
AIN6
19
6.3. ADC circuit
Successive approximation type 12bitADC is embedded.
9ch multi input compliant.
Measurement channel sequence is
AIN1→AIN2→AIN3→AIN4→AIN5→AIN6→AIN7→AIN8→Temp-Volt.
If measurement channel is disabled (command: CAh) the channel is skipped.
6.4. Digital filter
Internal digital filter.
Separate cut off frequency setting is available for channel AIN1-3,AIN4-6,AIN7,AIN8,and Temp-Volt.
Cut off frequency is selectable 250Hz, 125Hz, bypass. (Sampling frequency fs=1 kHz)
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
20
6.5. Power supply and configration control option
Embedded 3 voltage regulators as below.
VDDA: Supply 3.0V for measurement circuit and sensors.
AGND: Supply standard voltage (VDDA/2) for measurement circuit.
VDDL: Supply 1.8V for internal logic.
6.5.1.VDDA regulator
Operated by control terminal (XEN28) and command.
XEN28=”L”: Using internal regulator
ON/OFF controlled by command.
XEN28=”H”: Using externally supplied VDDA
Control is not possible by command.
Output is fixed 3.0V+/-10mV by before shipment from plant.
6.5.2.AGND regulator
ON/OFF controlled by command.
VDDA/2 is out on AGND.
6.5.3.VDDL regulator
Operated by control terminal (XEN18).
XEN18=”L”: Using Internal regulator.
Regulator is triggered by VDD power on.
XEN18=”H”: Using externally supplied voltage regulator.
VDD=3.2 to 3.6V
VDDA=3.0V±10mV
VDDI=1.65 to 3.6V
From system
To sensors
From system
VDDL=1.8V
AGND=VDDA/2
Meas. ADC
12bit
Logic
System
I/F
VSS=0V
From system
Fig4 Power supply block diagram
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
21
6.6. Power supply and connection example options
(1) Single power input XEN18=”L”、XEN28=”L”
I/F power with MCU: Externally supplied.
Analog power: VDDA control from internal regulator.
Internal logic power: VDDL control from internal regulator.
XEN28
XEN18I
3.2V to 3.6V
VDD
VDDA
VDDL
VDDI
VSS
1.65V to VDD
VSS
VSS
(2) Dual power input XEN18=”H”、XEN28=”L”
I/F power with MCU: Externally supplied with VDDI=VDDL.
Analog power: VDDA control from internal regulator.
Internal logic power: Externally supplied with VDDL=VDDI.Internal regulator is disabled.
VDDI
XEN28
XEN18I
3.2V to 3.6V
VDD
VDDA
VDDL
VDDI
1.65V to 1.95V
VSS
VSS
(3) Single power input XEN18=”L”、XEN28=”H”
I/F power with MCU: Externally supplied.
Analog power: Externally supplied with VDDA=VDD.Internal regulator is disabled.
Internal logic power: VDDL control from internal regulator.
VDDI
XEN28
XEN18I
3.0V to 3.6V
VDD
VDDA
VDDL
VDDI
VSS
1.65V to VDD
VSS
(4) Dual power input XEN18=”H”、XEN28=”H”
I/F power with MCU: Externally supplied with VDDI=VDDL.
Analog power: Externally supplied with VDDA=VDD.Internal regulator is disabled.
Internal logic power: Externally supplied with VDDL=VDDI.Internal regulator is disabled.
VDDI
XEN28
XEN18I
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
VDD
VDDA
VDDL
VDDI
3.0V to 3.6V
1.65V to 1.95V
22
6.7. Reset circuit
Digital circuit is reset by “Power on reset”,”External in: XRES”, or “Software reset command”.
Initialization by asserting XRES during power on is recommended. After reset by XRES, each terminal should
be under normal control. Pulse width of reset “L” must be longer than 20nsec.
Initialization reset timing is shown by below for “Power on reset”,”External in: XRES”, “Software reset
command”.
6.7.1. Power on and circuit initialization timing
Power on reset
Power on signal is generated by monitoring the internal logic power supply VDDL.
Power on reset timing
VDDL
Internal
Reset signal
DE
Reset length
Reset released
6.7.2. External reset control (XRES=H->L->H）
Manual asynchronous hardware reset available by a level sensitive external XRES input pin (no relation
with clock.
External reset timing
XRES
Internal
Reset signal
DE
Reset length
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Reset released
23
6.7.3. Software reset
The software reset by command interface is available.
The reset length is from the software reset command input (the 8th SCLK) to rising edge of (the 2nd CLK).
During this reset period, any command input from the serial interface is not accessible.
Soft reset timing
the 8th SCLK
rising edge of the 2nd CLK
XCS
SCLK
CLK
DIN
Command (99h)
Internal
Reset signal
DE
Reset length
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Reset released
24
7. Command
There are two types of command. 1): Multi byte command with parameters. 2): 1 byte command without
parameters. The interpretation and execution of command is done without external clock. The command
and the parameter are defined by one bytes lengths (eight bits).
Do not use other command codes that are not on the command table as below.
7.1. Command table
No.
Command
code
(Hex)
Command name
Instruction
length
(Byte)
Command
Execution
timing
immediately after
command issue
immediately after
command issue
immediately after
command issue
immediately after
command issue
Function
1
Start measurement
AF
1
2
Stop measurement
AE
1
3
REG_ON
BF
1
4
REG_OFF
BE
1
5
Measurement setting
CA
3
Measuring time
Measurement setting
6
Digital filter setting
CC
3
Measuring time
Digital filter setting
7
Read data
5‐
1
8
General port setting
D5
2
9
Software reset
99
1
10
NOP
00
1
immediately after
command issue
immediately after
command issue
immediately after
command issue
Start measurement
Stop measurement
Internal regulator(VDDA)on
Internal regulator(VDDA)off
Read data
General port setting
Software reset
Command that does no
operation
―
7.2. Parameter default table
No.
Command
5
Measurement setting
6
Digital filter setting
8
General port
Parameter
P1
P2
P1
P2
P1
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Code (bin)
D7
1
*
0
*
*
D6
1
*
0
*
*
D5
1
0
0
*
*
D4
0
0
0
*
*
D3
0
0
0
*
*
Hex
D2
0
0
0
*
*
D1
0
0
0
0
*
D0
0
0
0
0
0
E0
00
00
00
00
Default condition
No measure channel
1kHz Sampling
Digital filter 250Hz
Digital filter 250Hz
General port “L”out
25
7.3. Command function
7.3.1. Measurement start (command: AFh parameter: NONE)
D7
1
D6
0
D5
1
D4
0
D3
1
D2
1
D1
1
D0
1
Hex
AF
Function
Command measurement start
Begins measuring the sensor signal based on the measurement settings command and digital filter
settings. The REG_ON command should be issued before issuing the measurement start
command.
7,3,2, Measurement stop (command: AEh parameter: NONE)
D7
1
D6
0
D5
1
D4
0
D3
1
D2
1
D1
1
D0
0
Hex
AE
Function
Command measurement stop
Stops the sensor signal measurement. The measurement is stopped immediately after the
command is accepted.
7.3.3. REG_ON (command: BFh parameter: NONE)
D7
1
D6
0
D5
1
D4
1
D3
1
D2
1
D1
1
D0
1
Hex
BF
Function
Command regulator activation
The internal power supply (VDDA, AGND) is started. A delay of 500 msec or more is recommended
after entering the REG_ON command for the power supply circuits to stabilize before issuing a
measurement start command.
In case of XEN28 ="H” (VDDA is externally supplied), only the AGND of the internal power supply is
started by the REG_ON command.
7.3.4. REG_OFF (command: BEh parameter: NONE)
D7
1
D6
0
D5
1
D4
1
D3
1
D2
1
D1
1
D0
0
Hex
BE
Function
Command regulator stop
The internal power supply (VDDA, AGND) is stopped.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
26
7.3.5. Measurement setting (command: CAh parameter: 2)
D7
1
P17
P27
D6
1
P16
P26
D5
0
P15
P25
D4
0
P14
P24
D3
1
P13
P23
D2
0
P12
P22
D1
1
P11
P21
D0
0
P10
P20
Hex
CA
－
－
Function
Command measurement channel setting
Parameter 1 measurement channel set
Parameter 2 measurement timing set
Parameter 1 measurement channel set
“1”: Measurement
“0”: Non measurement
P10: AIN1, AIN2, AIN3 (Gyro sensor)
P11: AIN4, AIN5, AIN6 (Accelerometer)
P12:AIN7
P13:AIN8
P14:Temp-Volt
Measurement circuit set
“1”:Buff input
“0”:ADC direct input
P15:AIN7
P16:AIN8
P17:Temp-Volt
Please setting P15-17 when use Buff.
Set value
AIN7 use Buff
AIN7,AIN8 use Buff
AIN7,AIN8,Temp-Volt use Buff
AIN7,AIN8,Temp-Volt no use Buff
P15
1
1
1
0
P16
0
1
1
0
P17
0
0
1
0
Parameter 2 measurement Sampling timing set
The measurement cycle (sampling rate) is decided by external clock (CLK) .
P22-20：measurement cycle set
P22
P21
P20
Set valu
0
0
0
CLK Clock frequency /2048(Hz)
0
0
1
CLK Clock frequency /1024(Hz)
0
1
0
CLK Clock frequency /4096(Hz)
0
1
1
CLK Clock frequency /512(Hz)
1
0
0
CLK Clock frequency /256(Hz)
The setting not described is prohibited.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Reference value
CLK=2048KHz
1ksps
2ksps
500sps
4ksps
8ksps
27
P25-23
：FIFO Data Register set（Number of registers for each CH）
FIFO has 28 register max. Therefore, when AIN1-7 is measured, the maximum supported is four
registers/CH P22-20=[010] .
P25
0
0
0
0
1
1
1
1
P24
0
0
1
1
0
0
1
1
P23
0
1
0
1
0
1
0
1
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Set value
1 registers/CH
2 registers/CH
4 registers/CH
6 registers/CH
8 registers/CH
10 registers/CH
12 registers/CH
16 registers/CH
28
7.3.6. Digital filter setting (command: CCh parameter: 2)
D7
1
P17
*
D6
1
P16
*
D5
0
P15
*
D4
0
P14
*
D3
1
P13
*
D2
1
P12
*
D1
0
P11
P21
D0
0
P10
P20
Hex
CC
－
Function
Command digital filter setting
Parameter 1 cut off frequency set
Parameter 2 cut off frequency set
Internal digital filter is set.
The digital filter setting command is only valid while the measurement is stopped and the digital filter
setting command is ignored if sent while measurement is already started. When changing the digital
filter setting is required after measurement has started, issue the measurement stop command and
input of the new digital filter setting command and the parameters is needed.
P11
P13
P15
P17
P21
0
0
1
1
P10
P12
P14
P16
P20
0
1
0
1
Cut off frequency
250Hz
125Hz
Setting prohibited
Through
P11, P10:AIN1 to 3 (Gyro sensor) input digital filter
P13, P12:AIN4 to 6 (Accelerometer) input digital filter
P15,P14 :AIN7 input digital filter
P17,P16 :AIN8 input digital filter
P21,P20 :Temp-Volt input digital filter
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
29
7.3.7. Read data (command: 5-h Read Data: 2)
D7
0
0
D7
D6
D5
D4
D3
D2
1
0
1
P13 P12
0
0
0
D11 D10
D6
D5
D4
D3
D2
D7-D4: read command
P13-P10: read channel setting
P13
P12
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
D1
P11
D9
D1
D0
P10
D8
D0
P11
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Hex
5－
－
－
Function
Command read data
Read Data 1 upper 4bit
Read Data 2 lower 8bit
P10
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Selected channel
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
Temp-Volt
Setting prohibited
Setting prohibited
Setting prohibited
Setting prohibited
Setting prohibited
Setting prohibited
Setting prohibited
Read data 0x00 is output for the below cases.
1) When specifying a AIN* channel that is not enabled by the measurement setting command.
2) When specifying and invalid AIN* channel setting parameter.
7.3.8. General port setting (command: D5h parameter: 1)
D7
1
*
D6
1
*
D5
0
*
D4
1
*
D3
0
*
D2
1
*
D1
0
*
D0
1
P0
Hex
D5
－
Function
Command general port setting
Parameter DIO data set
P0: set output value of general DIO.
P0=1: out”H” level.
P0=0: out”L” level.
7.3.9. Software reset (command: 99h parameter: NONE)
D7
1
D6
0
D5
0
D4
1
D3
1
D2
0
D1
0
D0
1
Hex
99
Function
Command Software reset
The software reset has similar effects to a hard reset.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
30
7.3.10. NOP (command: 00h parameter: NONE)
D7
0
D6
0
D5
0
D4
0
D3
0
D2
0
D1
0
D0
0
Hex
00h
Function
Command Non Operation
The command for “No Operation” has no effect on chip operation.
Power on sequence
System
power
Command
from system
on
Measurement setting
Digital filter setting
REG_ON
500msec wait
Start measurement
Data reading
Data transfer corresponding to DE signal.
Stop measurement
REG_OFF
System power off
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
31
8. Absolute maximum ratings
Table 6 absolute maximum ratings
item
code
rating
unit
Supply voltage(1)
VDD
-0.3 to
5.5
Supply voltage(2)
VDDA
-0.3 to
5.5
Supply voltage(3)
VDDL
-0.3 to
2.5
Supply voltage(4)
VDDI
-0.3 to
5.5
Supply voltage(5)
VSS
0.0
Logic input voltage
VLIN
-0.3 to VDD + 0.3
V
VLOUT
-0.3 to VDD + 0.3
V
Logic output voltage
Operating temperature
Storage temperature
ToPN
-40 to 85
Tstg
-55 to 125
V
°C
Note *1: All standard voltage is VSS = 0 V without notice.
*2: Based electric potential is VSS.
*3: When using over the range of stated above, IC might be destroyed. In additon it might influence
the reliability of the IC if it uses it for a long time in the state of the absolute maximum rating.
*4: Please supply the voltage to become VDD>VDDA.
9. Recommended operation conditions
Table 7 recommended conditions (VDDI≠VDDL, VDDL: using internal regulator)
Operating
item
code
voltage
Supply voltage(1)
VDD
3.0 to 3.6
Supply voltage(2)
VDDA
2.85 to VDD
Supply voltage(3)
VDDL
1.65 to 1.95
Supply voltage(4)
VDDI
1.65 to VDD
Supply voltage(5)
VSS
0.0
unit
V
Table 8 recommended conditions (VDDI=VDDL, VDDL: using external input)
Operating
item
code
voltage
Supply voltage(1)
VDD
3.0 to 3.6
Supply voltage(2)
VDDA
2.85 to VDD
Supply voltage(3)
VDDL
1.65 to 1.95
Supply voltage(4)
VDDI
1.65 to 1.95
Supply voltage(5)
VSS
0.0
unit
V
Note *1: The operation of IC is guaranteed within the range of recommended operation condition.
*2: Please insert the bypass capacitor for the noise reduction near the power supply terminal.
*3: Operation is not guaranteed if operative with a rapid supply voltage change.
*4: Please supply the voltage such that VDD>=VDDA and VDD>=VDDI>=VDDL.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
32
10. DC characteristics
Table 9 DC characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.0 to 3.6 V, Ta = -40 to 85ºC
item
code
“L”input voltage
VIL
“H”input voltage
VIH
Input leakage current
ILI
conditions
rating
Min.
Typ.
Max.
unit
terminal
V
Logic input
Logic input
VSS
－
0.2 × VDDI
0.8 × VDDI
－
VDDI
VIN = VDDI or VSS
-2.0
－
2.0
μA
ILA
VDDA=3.6V
VIN=VDDA or VSS
-4.8
－
4.8
μA
Output leakage current
ILo
VIN = VDDI or VSS
-2.0
－
2.0
μA
Logic input
In/out leakage current
ILIO
VIN = VDDI or VSS
-2.0
－
2.0
μA
Logic input
CIN
Ta = 25 °C, f=1 MHz
－
－
25
pF
VOL
VDD = 1.8 V
VSS
－
VSS + 0.3
“H”out voltage
VOH
IOL = 0.06 mA
IOH = -0.06 mA
VDDI - 0.3
－
VDDI
Static current
IDDIQ
－
－
consumption
IDDLQ
VDDI = VDDL = 1.8 V
－
IDDAQ
VDD =VDDA= 3.0 V
Analog leakage current
Input capacitance
“L”out voltage
－
IDDQ
Active current
consumption 1
VDDI = 1.8 V
VDD = 3.3 V
IDDI
IDD
VDDA,VDDL using
Internal Regulater
CLK=2MHz
7ch measurement
976.6sps
Active current
consumption 2
Analog input
Logic input
Analog input
V
Logic in/out-put
5.0
μA
VDDI
－
20.0
μA
VDDL
－
－
5.0
μA
VDDA
－
－
5.0
μA
VDD
－
－
10
μA
VDDI
－
202 *1
300
μA
VDD
－
41 *1
60
μA
VDDA
－
105 *1
150
μA
VDDL
VDDI = 1.8 V
IDDA
VDD = 3.3 V
Externally supplied with
VDDA,VDDL
VDDA=3.0V
VDDL=1.8V
IDDL
CLK=2MHz
7ch measurement
976.6sps
*1 Ta=25 ºC
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
33
ADC
Table 10 ADC characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.0 to 3.6 V, Ta = -40 to 85 ºC
item
Integral nonlinearity
Differential nonlinearity
Full scale error
Zero scale error
code
INL
DNL
FSE
ZSE
conditions
CLK=2.048MHz
CLK=2.048MHz
CLK=2.048MHz
CLK=2.048MHz
rating
Min.
Typ.
-3
-3
-8.0
-8.0
unit
Max.
3
3
8.0
8.0
LSB
LSB
mV
mV
Internal Regulater circuit
Table 11 Constant voltage circuit characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.2 to 3.6 V, Ta = -40 to 85 ºC
item
Output voltage (VDDL)
Output voltage (VDDA)
code
VDDL
VDDA
conditions
Ta=25 ºC、
VDD=3.3V
rating
Min.
1.7
2.990
Typ.
1.8
3.0
Max.
unit
1.9
3.010
V
V
Temp-Voltage Circuit
Table 12 Constant voltage circuit characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.0 to 3.6 V, Ta = -40 to 85 ºC
item
code
Output voltage
Vtemp
Scale Factor
dVtemp
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
conditions
Ta=25℃
VDDA=3.0V
VDDA=3.0V
rating
Min.
Typ.
Max.
unit
1393
1477
1589
Code
4.084
4. 800
5.515
code/℃
34
11.AC characteristics
11.1. Oscillating frequency
The external clock input frequency timing requirements are described below for the CLK pin terminal.
tCYC,
CLK
tCHW
Fig 5 external clock in
Table 13 External clock in characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.0 to 3.6 V, Ta = -40 to 85 ºC
item
External clock input
frequency
External clock input period
CLK duty
code
conditions
1/tCYC
tCYC
tCD
tCHW /tCYC
rating
unit
Min.
Typ.
Max.
－
－
2.048
MHz
0.488
40
－
－
－
60
usec
%
*1: All timing is provided for based on 20% and 80% of VDD.
*2: rise time (tr) and fall time (tf) is defined max.10 ns.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
35
11.2. Serial interface ( default : DOUT hold mode )
tCSH
tCSS
XCS
tSCYC,
SCLK
tSCLW
tSDS
tSCHW
tSDH
DIN,
tOH1
tACC
tOH2
DOUT,
Fig 6 serial interface
Table 14 serial interface characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.0 to 3.6 V, Ta = -40 to 85 ºC
item
code
conditions
Min.
Max.
tSCYC
－
100
－
SCLK low level pulse width
tSCLW
－
40
－
SCLK high level pulse width
tSCHW
－
40
－
XCS set up time
tCSS
－
30
tSCCL
XCS hold time
tCSH
－
30
tSCCL
Data set up time
tSDS
－
10
－
Data hold time
tSDH
－
10
－
Data out access time
tACC
CL = 30 pF
－
30
Data out hold time 1
tOH1
－
10
－
Data out hold time 2
tOH2
－
10
－
SCLK period
unit
ns
*1: All timing is provided for based on 20% and 80% of VDD.
*2: rise time (tr) and fall time (tf) is defined max.10 ns.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
36
11.3. Reset
tRW
XRES
tR
Resetting
Internal condition
Reset completed
Fig 7 Reset
Table 15 reset characteristics
VSS = 0 V, VDDI = 1.65 to 3.6V, VDDL = 1.65 to 1.95V, VDD = 3.0 to 3.6 V, Ta = -40 to 85 ºC
item
code
conditions
tR
Reset low level pulse width
tRW
Reset time
Min.
Max.
-
-
1
-
20
-
unit
μs
*1: All timing is provided for based on 20% and 80% of VDD.
*2: rise time (tr) and fall time (tf) is defined max.10 ns.
*3: When the power supply is turned on, the terminal XRES is recommended to be fixed at the “L" level.
*4: This condition is valid when resetting under stable power supply condition.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
37
12. Package outer dimension
12.1.QFP12-48PIN
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
38
13. Digital filter characteristics
■Cut off frequency fc=250Hz, sampling frequency fs=1 kHz
Amplitude characteristic
Delay characteristic
LPF (全帯域）
fc=250Hz, fs=1kHz
LPF (全帯域）
fc=250Hz, fs=1kHz
0
10
9
-20
8
7
gd [sample]
gain [dB]
-40
-60
-80
6
5
4
3
2
-100
1
-120
0
0.1
1
10
f [Hz]
100
1000
0.1
1
10
f [Hz]
■Cut off frequency fc=125Hz, sampling frequency fs=1 kHz
Amplitude characteristic
Delay characteristic
LPF (全帯域）
fc=125Hz, fs=1kHz
LPF (全帯域）
fc=125Hz, fs=1kHz
100
1000
100
1000
10
20
9
0
8
7
gd [sample]
gain [dB]
-20
-40
-60
6
5
4
3
-80
2
-100
1
0
-120
0.1
1
10
f [Hz]
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
100
1000
0.1
1
10
f [Hz]
39
14. Wiring example
NC
AIN2P
AIN2N
VDDA
VSS
VSS
VDD
VDDL
VSS
VDDI
XEN18
NC
GND_G
EN_Acc
Vout_AX
Vout_AY
Vout_AZ
GND_Ac
c
NC
AH6120LR
or
AP6110LR
Vout_GZ
Vdd
_Ac
c
Vdd_G
X
Vref_GX
Vout_GX
GND_G
Z
Vdd_G
Z
Vref_GZ
TP
NC
GND_G
X
NC
AIN1N
AIN1P
AIN3P
AIN3N
VSS
ITRS
AIN6
AIN5
AIN4
AIN7
NC
AFE-IC
NC
XEN28
DE
DIO
DIN
DOUT
TEST1
TEST2
VSS
SCLK
XCS
XRES
AIN8
TSEN
NC
VSS
NC
VDDA
VDD
VSS
CLK
NC
NC
NC
Vout_GY
Vref_GY
Vdd_G
Y
NC
To system
2.048MHz
Measurement signal input
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
40
15. The method of output code stabilization
We introduce the contents of evaluation checked at our company to the stabilization method of
output code.
1) It adds 47uF between AVDD（CN3) and VSS(CN9-2）
2) Measurement system
3) Measurement results
Gx
Gy
Gz
Ax
2.413
2.398
2.357
4.187
Without capacitor
With capacitor(47uF)
0.517
0.491
0.485
1.182
The code is stable by adding a capacitor between AVDD and VSS.
Standard deviation
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
Ay
4.150
1.142
Az
4.562
1.131
41
16.The method of analog output monitor
(1)How to monitor an analog output using a power supply with built-in AFE
The Gyro output can check CN12 pin and an acceleration output from CN11 pin, respectively.
When you don’t remove R1-6 and R107-109 which constitute the passive filter connected to the sensor
output, please take into consideration the influence of capacitance C1-9 (20nF).
If you would like to avoid the influence of the passive component part which constitutes the passive filter,
please remove R1-6 and R107-109.
CN4(VDDL)
CN3(VDDA)
CN1(VDD)
CN2(VDDI)
CN9_1(VSS)
open
3.2V
0V
CN10(DIO) open
(DE)
(DIN)
(DOUT)
(SCLK)
(XCS)
SW101 control
XEN18=L
XEN28=L
SW102 control
TEST1=L
TEST2=L
Connected to system
(VDDA starting command issue)
(2)How to monitor an analog output using external power supply
The Gyro output can check CN12 pin and an acceleration output from CN11 pin, respectively.
When using an external power supply, it is necessary to change the parts on a substrate.
About the step to change the parts on a substrate.
・The 0Ω resistance of R101 is removed, and 0Ω resistance is connected to R102.
(By this step, the power supply can be supplied from CN8 pin.)
・When you avoid the influence of the passive component part which constitutes the passive filter
connected to the sensor output, please remove resistance of R1-6 and R107-109.
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
CN8(VDDA)
CN4(VDDL)
CN3(VDDA)
CN1(VDD)
CN2(VDDI)
CN9_1,2(VSS)
open
CN10(DIO)
(DE)
(DIN)
(DOUT)
(SCLK)
(XCS)
open
3V
0V
SW101 Control
XEN18=L
XEN28=L
SW102 Control
TEST1=L
TEST2=L
42
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
43
17.Contact
America
Epson Electronics America, Inc.
214 Devcon Drive, San Jose, CA 95112, USA
Phone: +1-800-228-3964
FAX: +1-408-922-0238
Europe
Epson Europe Electronics GmbH
Riesstrasse 15, 80992 Munich, GERMANY
Phone: +49-89-14005-0
FAX: +49-89-14005-110
Asia
Epson (China) Co., Ltd.
7F, Jinbao Bldg., No.89 Jinbao Street Dongcheng District, Beijing, China, 100005
Phone: +86-10-8522-1199
FAX: +86-10-8522-1120
Shanghai Branch
High-Tech Building, 900 Yishan Road, Shanghai 200233, China
Phone: +86-21-5423-5577
FAX: +86-21-5423-4677
Shenzhen Branch
12/F, Dawning Mansion, #12 Keji South Road, Hi-Tech Park, Shenzhen, China
Phone: +86-755-2699-3828 FAX: +86-755-2699-3838
Epson Hong Kong Ltd.
Unit 715-723 7/F, Trade Square, 681 Cheung Sha Wan Road, Kowloon, Hong Kong
Phone: +852-2585-4600
FAX: +852-2827-2152
Epson Taiwan Technology & Trading Ltd.
14F, No. 7, Song Ren Road, Taipei 110, TAIWAN
Phone: +886-2-8786-6688
FAX: +886-2-8786-6660
Epson Singapore Pte., Ltd.
No 1 HarbourFront Place, #03-02 HarbourFront Tower One, Singapore 098633
Phone: +65-6586-5500
FAX: +65-6271-3182
Seiko Epson Corp. Korea Office
5F (63Bldg.,Yoido-dong) 50, 63-ro, Yeongdeungpo-gu, Seoul, 150-763, Korea
Phone: +82-2-784-6027
FAX: +82-2-767-3677
Seiko Epson Corporation
Document No.: EB02_ME_Ver.1.02
Date: Jun. 17. 2013
44