ADIS16480 AD [Analog Devices], ADIS16480 Datasheet - Page 38

• Manufacturer Part Number: ADIS16480
• Description: Ten Degrees of Freedom Inertial Sensor
• Manufacturer: AD [Analog Devices]

ADIS16480
For example, set SLP_CNT[7:0] = 0x64 (DIN = 0x9064), then
set SLP_CNT[8] = 1 (DIN = 0x9101) to start a sleep period of
100 seconds.
Table 151. SLP_CNT (Page 3, Base Address = 0x10)
Bits
[15:10]
9
8
[7:0]
If the sleep mode and power-down mode bits are both set high,
the normal sleep mode (SLP_CNT[8]) bit takes precedence.
General-Purpose Registers
The USER_SCR_x registers (see Table 152, Table 153, Table 154,
and Table 155) provide four 16-bit registers for storing data.
Table 152. USER_SCR_1 (Page 2, Base Address = 0x74)
Bits
[15:0]
Table 153. USER_SCR_2 (Page 2, Base Address = 0x76)
Bits
[15:0]
Table 154. USER_SCR_3 (Page 2, Base Address = 0x78)
Bits
[15:0]
Table 155. USER_SCR_4 (Page 2, Base Address = 0x7A)
Bits
[15:0]
Real-Time Clock Configuration/Data
The VDDRTC power supply pin (see Table 5, Pin 23) provides
a separate supply for the real-time clock (RTC) function. This
enables the RTC to keep track of time, even when the main supply
(VDD) is off. Configure the RTC function by selecting one of
two modes in CONFIG[0] (see Table 106). The real-time clock
data is available in the TIME_MS_OUT register (see Table 156),
TIME_DH_OUT register (see Table 157), and TIME_YM_OUT
register (see Table 158). When using the elapsed timer mode,
the time data registers start at 0x0000 when the device starts
up (or resets) and begin keeping time in a manner that is
similar to a stopwatch. When using the clock/calendar mode,
Description
Not used
Power-down mode
Normal sleep mode
Programmable time bits; 1 sec/LSB;
0x00 = indefinite
Description
User-defined
Description
User-defined
Description
User-defined
Description
User-defined
Rev. 0 | Page 38 of 40
write the current time to the real-time registers in the following
sequence: seconds (TIME_MS_OUT[5:0]), minutes (TIME_
MS_OUT[13:8]), hours (TIME_DH_OUT[5:0]), day
(TIME_DH_OUT[12:8]), month (TIME_YM_OUT[3:0]),
and year (TIME_YM_OUT[14:8]). The updates to the timer
do not become active until there is a successful write to the
TIME_ YM_OUT[14:8] byte. The real-time clock registers
reflect the newly updated values only after the next seconds tick
of the clock that follows the write to TIME_YM_OUT[14:8]
(year). Writing to TIME_ YM_OUT[14:8] activates all timing
values; therefore, always write to this location last when
updating the timer, even if the year information does not
require updating.
Write the current time to each time data register after setting
CONFIG[0] = 1 (DIN = 0x8003, DIN = 0x8A01). Note that
CONFIG[1] provides a bit for managing daylight savings time.
After the CONFIG and TIME_xx_OUT registers are
configured, set GLOB_CMD[3] = 1 (DIN = 0x8003, DIN =
0x8208, DIN = 0x8300) to back up these settings in flash, and
use a separate 3.3 V source to supply power to the VDDRTC
function. Note that access to time data in the TIME_xx_OUT
registers requires normal operation (VDD = 3.3 V and full
startup), but the timer function only requires that VDDRTC =
3.3 V when the rest of the
Table 156. TIME_MS_OUT (Page 0, Base Address = 0x78)
Bits
[15:14]
[13:8]
[7:6]
[5:0]
Table 157. TIME_DH_OUT (Page 0, Base Address = 0x7A)
Bits
[15:13]
[12:8]
[7:6]
[5:0]
Table 158. TIME_YM_OUT (Page 0, Base Address = 0x7C)
Bits
[15]
[14:8]
[7:4]
[3:0]
Description
Not used
Minutes, binary data, range = 0 to 59
Not used
Seconds, binary data, range = 0 to 59
Description
Not used
Day, binary data, range = 1 to 31
Not used
Hours, binary data, range = 0 to 23
Description
Not used
Year, binary data, range = 0 to 99, relative to 2000 A.D.
Not used
Month, binary data, range = 1 to 12
ADIS16480
is turned off.
Data Sheet