Document Number: 002-14826 Rev. *G
Page 54 of 65
PRELIMINARY
CYW43903
16. System Power Consumption
Note:
Values in this data sheet are design goals and are subject to change based on the results of device characterization.
Note:
Unless otherwise stated, these values apply for the conditions specified in
Table 16, “Recommended Operating Conditions and
16.1 WLAN Current Consumption
The tables in this subsection show the typical, total current used by the CYW43903. Current values may be measured with the APPS
core powered off. The first column of the table, the mode description, will state the power condition of the APPS core.
16.1.1 2.4 GHz Mode
Table 30. 2.4 GHz Mode WLAN Current Consumption
Mode
V
BAT
= 3.6V
1
(μA)
1. Typical silicon.
VDDIO =
1, 2
(μA)
2. VIO is specified with all pins idle (not switching) and not driving any loads.
Sleep Modes
Radio off
3
3. REG_ON is low or the device is in hibernation, and all supplies are present.
3
3
Sleep
4,
5
4. REG_ON is high. APPS domain is powered down. WLAN domain is in low-power state retention mode. Top level is powered up.
5. Inter-beacon current.
6
160
IEEE Power Save, DTIM=1, single RX, APPS powered down
6
6. Beacon Interval = 102.4 ms. Beacon duration = 1 ms @ 1 Mbps. Average current over 3× DTIM intervals.
2180
160
IEEE Power Save, DTIM=3, single RX, APPS powered down
7
7. Beacon interval = 307.2 ms. Beacon duration = 1 ms @ 1 Mbps. Average current over 3× DTIM intervals.
680
160
IEEE Power Save, DTIM=9, single RX, APPS powered down
233
160
Active Modes
Continuous RX mode MCS7, HT20, 1SS, APPS powered up
8,
9
8. Duty cycle is 100%. Carrier sense (CS) detect/packet receive.
9. Measured using packet engine test mode.
57,200
60
CRS-HT20, APPS powered up
10
10. Carrier sense (CCA) when no carrier present.
55,200
60
Continuous TX mode 1 Mbps, APPS powered up
11
11. Duty cycle is 100%. TX power at chip output ~17.7 dBm.
325,000
60
Continuous TX mode MCS7, HT20, 1SS, 1 TX, APPS powered up
12
12. Duty cycle is 100%. TX power at chip output ~15.2 dBm.
302,000
60
Ping Modes
Ping to associated access point
11
336,000
60
Sleep
6
160