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PDF AK09915D Data sheet ( Hoja de datos )
| Número de pieza | AK09915D | |
| Descripción | 3-axis Electronic Compass | |
| Fabricantes | AKM | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AK09915D (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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[AK09915D]
AK09915D
3-axis Electronic Compass
1. General Description
AK09915D is 3-axis electronic compass IC with high sensitive Hall sensor technology.
Small package of AK09915D incorporates magnetic sensors for detecting terrestrial magnetism in the X-axis,
Y-axis, and Z-axis, a sensor driving circuit, signal amplifier chain, and an arithmetic circuit for processing the
signal from each sensor. Self-test function is also incorporated. From its compact foot print and thin package
feature, it is suitable for map heading up purpose in GPS-equipped smart phone and tablet to realize pedestrian
navigation function.
2. Features
Functions:
3-axis magnetometer device suitable for compass application
Built-in A to D Converter for magnetometer data out
16-bit data out for each 3-axis magnetic component
Sensitivity: 0.15 µT/LSB (typ.)
Serial interface
I2C bus interface
Standard, Fast and High-speed modes (up to 2.5 MHz) compliant with Philips I2C
specification Ver.2.1
4-wire SPI
Operation mode
Power-down, Single measurement, Continuous measurement and Self-test
Open Drain DRDY function for measurement data ready
Magnetic sensor overflow monitor function
Built-in oscillator for internal clock source
Power on Reset circuit
Self-test function with internal magnetic source
Built-in Noise Suppression Filter (NSF)
Selectable sensor drive
Low power drive / Low noise drive
Built-in magnetic sensitivity adjustment circuit
32 FIFO data buffer
Operating temperatures:
-30˚C to +85˚C
Operating supply voltage:
Analog power supply +1.7V to +3.6V
Digital Interface supply +1.65V to analog power supply voltage
Current consumption:
Power-down:
3 µA (typ.)
Measurement:
Average current consumption at 100 Hz repetition rate
Low power drive: 0.9 mA (typ.)
Low noise drive: 1.8 mA (typ.)
Package:
AK09915D 14-pin WL-CSP (BGA): 1.6 mm 1.6 mm 0.5 mm (typ.)
016009278-E-00
-1-
2016/7
1 page  
[AK09915D]
5. Pin Configurations and Functions
Pin Pin name I/O
No.
A1 ODDRDY O
A2 CSB
A3 SCL
I
I
SK
A4 SDA I/O
SI
B1 VDD
B3 N/C
B4 SO
I
-
-
O
C1 VSS
C2 N/C
C3 N/C
C4 VID
D1 CAD0
-
-
-
-
I
D2 CAD1 I
D4 RSTN I
Power
supply
VID
VID
VID
VID
-
-
VID
-
-
-
-
VDD
VDD
VID
Type
Function
Open
Drain
CMOS
CMOS
CMOS
Power
-
CMOS
Power
-
-
Power
CMOS
CMOS
CMOS
Open Drain Data Ready output pin.
“L” active. Informs measurement ended and data is ready to be read.
Connect to VID on contact with pull-up resister.
Do not apply more than VID voltage to ODDRDY pin.
Chip select pin for 4-wire SPI.
“L” active. Connect to VID when selecting I2C bus interface.
When the I2C bus interface is selected (CSB pin is connected to VID).
SCL: Control clock input pin
Input: Schmitt trigger
When the 4-wire SPI is selected.
SK: Serial clock input pin.
When the I2C bus interface is selected (CSB pin is connected to VID).
SDA: Control data input/output pin
Input: Schmitt trigger, Output: Open-drain
When the 4-wire SPI is selected.
SI: Serial data input pin
Positive power supply pin.
Non-connect
Connect to VSS or keep this pin non-connected.
When the I2C bus interface is selected (CSB pin is connected to VID)
Hi-Z output. Keep this pin electrically non-connected.
When the 4-wire SPI is selected.
Serial data output pin
Ground pin
Non-connect
Connect to VSS or keep this pin non-connected.
Non-connect
Connect to VSS or keep this pin non-connected.
Digital interface positive power supply pin.
When the I2C bus interface is selected (CSB pin is connected to VID)
CAD0:Slave address 0 input pin
Connect to VSS or VDD.
When the 4-wire serial interface is selected.
Connect to VSS.
When the I2C bus interface is selected (CSB pin is connected to VID).
CAD1:Slave address 1 input pin
Connect to VSS or VDD.
When the 4-wire serial interface is selected.
Connect to VSS.
Reset pin.
Resets registers by setting to “L”. Connect to VID when not in use.
016009278-E-00
-5-
2016/7
5 Page 
[AK09915D]
8.6. I2C Bus Interface
CSB pin = “H”
I2C bus interface is compliant with Standard mode, Fast mode and High-speed mode (Hs-mode).
Standard/Fast/Hs-mode is selected automatically by fSCL.
Standard mode
fSCL≤100kHz
Symbol
Parameter
Min.
Typ.
Max.
Unit
fSCL
tHIGH
tLOW
SCL clock frequency
SCL clock “High” time
SCL clock “Low” time
4.0
4.7
100 kHz
µs
µs
tR SDA and SCL rise time
1.0 µs
tF SDA and SCL fall time
0.3 µs
tHD:STA
Start Condition hold time
4.0
µs
tSU:STA
Start Condition setup time
4.7
µs
tHD:DAT SDA hold time (vs. SCL falling edge)
0
µs
tSU:DAT SDA setup time (vs. SCL rising edge)
250
ns
tSU:STO
Stop Condition setup time
4.0
µs
tBUF
Bus free time
4.7
µs
Fast mode
100kHz≤fSCL≤400kHz
Symbol
Parameter
fSCL
tHIGH
tLOW
SCL clock frequency
SCL clock “High” time
SCL clock “Low” time
tR SDA and SCL rise time
tF SDA and SCL fall time
tHD:STA
Start Condition hold time
tSU:STA
Start Condition setup time
tHD:DAT
SDA hold time (vs. SCL falling edge)
tSU:DAT
SDA setup time (vs. SCL rising edge)
tSU:STO
Stop Condition setup time
tBUF
Bus free time
tSP Noise suppression pulse width
Min.
0.6
1.3
0.6
0.6
0
100
0.6
1.3
Typ.
Max.
400
0.3
0.3
50
Unit
kHz
µs
µs
µs
µs
µs
µs
µs
ns
µs
µs
ns
[I2C bus interface timing]
1/fSCL
VIH2
SCL
VIL2
SDA
tBUF
tLOW tR
tHIGH tF
SCL
tHD:STA
Stop Start
016009278-E-00
tHD:DAT
tSU:DAT tSU:STA
Start
- 11 -
VIH2
VIL2
tSP
VIH2
VIL2
tSU:STO
Stop
2016/7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK09915D.PDF ] | |
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