as8510 austriamicrosystems, as8510 Datasheet - Page 37

• Manufacturer Part Number: as8510
• Description: Data Acquisition Device For Battery Sensors
• Manufacturer: austriamicrosystems

AS8510
Datasheet - D e t a i l e d D e s c r i p t i o n
Table 33. Control Registers
Note: All the registers from address 0x19 to 0x2C are read-only.
7.9.1 Standby Mode - Power Consumption
In Standby Mode 1 there is a timer based accurate measurement every Ta seconds. The device itself stays in idle-mode as long as it does not
get a different command from the SPI interface. Internal oscillator frequency is typically foscint=262 kHz to reduce power consumption as long as
the timer runs. After every time out of Ta secs, it performs accurate measurement of current, voltage/ temperature. Data ready is signaled to
microcontroller through an interrupt signal on INT and goes into STOP state.
In the SBM the following equations hold:
Power consumption = (DR
www.austriamicrosystems.com/AS8510
Addr in
HEX
T
and SBM2.
T
started. Any measurements performed during T
T1 = 3ms (by default setting, every third measurement is sent to microcontroller in the SBM mode 1) is the time needed to perform the first
measurement.
T
DR
46
47
sbm1
sett
meas
SBM
≈ 2ms (depending on external capacitors). This is the time required by the analog part to settle when the new measuring period is
= Ta= 10s (default value is 10secs); the power consumption is valid for this setting. This is the period of the repetition rate in SBM 1
=T
= T
sett
meas
+T1 is the total active time needed to get a valid result.
/T
DEC_REG_R2_V
FIR CTL_REG_V
sbm
Register Name
SBM
≈ 5ms/10s. This is the ratio of repetition time versus the active time (Device in NOM mode).
*NOM mode power consumption) + ((10s-5ms)/10s)*Stop mode power consumption)
sett
POR Value
0000_0100
0000_0000
produce invalid results.
R/W
R/W
R/W
Revision 3.4
D[7:5]
D[3:2]
D[1:0]
D[6:3]
D[2:0]
D[4]
D[7]
These two bits select the source of output 16-bit data in
Interrupt Mask Control for Voltage channel data Ready
0000
0001
0011
This bit selects FIR / MA Filter in Voltage channel.
0111
1111
Normal mode from Voltage channel. Default is 01
These bits select the number of data samples for
00
01
10
11
0
1
0
1
averaging in MA filter in Voltage channel.
8-bit Control / Status Data
Interrupt on INT pin (Default is 0)
Default is 0000 (bypass)
Default is 0 (FIR)
Dechop/Demod Output
Reserved
Reserved
Reserved
FIR / MA Output
CIC2 Output
CIC Output
Unmasked
MA Filter
Masked
bypass
FIR
15
1
3
7
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