Table of Contents
Advertisement
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
DC
Characteristics,".
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
3
Radio off
4, 5
Sleep
IEEE Power Save, DTIM=1, single RX, APPS powered down
IEEE Power Save, DTIM=3, single RX, APPS powered down
IEEE Power Save, DTIM=9, single RX, APPS powered down
Continuous RX mode MCS7, HT20, 1SS, APPS powered up
CRS-HT20, APPS powered up
Continuous TX mode 1 Mbps, APPS powered up
Continuous TX mode MCS7, HT20, 1SS, 1 TX, APPS powered up
Ping to associated access point
Sleep
1. Typical silicon.
2. VIO is specified with all pins idle (not switching) and not driving any loads.
3. REG_ON is low or the device is in hibernation, and all supplies are present.
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. Beacon Interval = 102.4 ms. Beacon duration = 1 ms @ 1 Mbps. Average current over 3× DTIM intervals.
7. Beacon interval = 307.2 ms. Beacon duration = 1 ms @ 1 Mbps. Average current over 3× DTIM intervals.
8. Duty cycle is 100%. Carrier sense (CS) detect/packet receive.
9. Measured using packet engine test mode.
10. Carrier sense (CCA) when no carrier present.
11. Duty cycle is 100%. TX power at chip output ~17.7 dBm.
12. Duty cycle is 100%. TX power at chip output ~15.2 dBm.
Document Number: 002-14826 Rev. *G
PRELIMINARY
Mode
Active Modes
10
11
11
Table 16, "Recommended Operating Conditions and
V
= 3.6V
BAT
Sleep Modes
3
6
6
2180
680
7
233
57,200
8, 9
55,200
325,000
302,000
12
Ping Modes
336,000
6
CYW43903
VDDIO =
1
(μA)
VDDIO_HIB = 3.3V
3
160
160
160
160
60
60
60
60
60
160
1, 2
(μA)
Page 54 of 65
Advertisement
Table of Contents
