Manual

RF22
Version: 0.1 Date: 12/23/2008
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64
Register 16h. Wake-Up Timer Period 3
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name wtm[7:0]
Type R/W
Reset value = 00000000
Bit Name Function
7:0 wtm[7:0] Wake Up Timer Mantissa (M) Value*.
*Note: The period of the wake-up timer can be calculated as T
WUT
= (32 x M x2
R-D
) / 32.768 ms.
Register 17h. Wake-Up Timer Value 1
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name wtm[15:8]
Type R
Reset value = xxxxxxxx
Bit Name Function
7:0 wtm[15:8] Wake Up Timer Current Mantissa (M) Value*.
*Note: The period of the wake-up timer can be calculated as TWUT = (32 x M x2R-D) / 32.768 ms.
Register 18h. Wake-Up Timer Value 2
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name wtm[7:0]
Type R
Reset value = xxxxxxxx
Bit Name Function
7:0 wtm[7:0] Wake Up Timer Current Mantissa (M) Value*.
*Note: The period of the wake-up timer can be calculated as TWUT = (32 x M x2R-D) / 32.768 ms.
Register 19h. Low-Duty Cycle Mode Duration
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name ldc[7:0]
Type R/W
Reset value = 00000000
Bit Name Function
7:0 ldc[7:0] Low-Duty Cycle Mode Duration (LDC)*.
*Note: The period of the low-duty cycle ON time can be calculated as
T
LDC_ON
= (32 * LDC * 2
R-D
) / 32.768 [ms]
R and D values are the same as in the wake-up timer setting in "Register 14h. Wake-Up Timer Period 1"
Register 1Ah. Low Battery Detector Threshold
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name Reserved lbdt[4:0]
Type R R/W
Reset value = xxx10100
Bit Name Function
7:5 Reserved Reserved.
4:0 lbdt[4:0] Low Battery Detector Threshold.
This threshold is compared to Battery Voltage Level. If the Battery Voltage is less than the
threshold the Low Battery Interrupt is set. Default = 2 V.*