User Manual

SM-MSN09-C01 Datasheet
- 17 -
Revision 1.0 June 2014
Table 9 Power Mode Configuration
V
BAT
VDD_IO
V
EN
Power mode
Off
Off
X
Power Off mode
On
X
Off
Power Off mode
On
Off
On
Low Power Mode
On
On
On
Full power mode
Note: X: Don’t care
4.9 Reset and download concept
To enter reset there are 2 ways:
- Pulling V
EN
low (Hard Power Down state)
- If V
BAT
monitor is enabled: lowering V
BAT
below the monitor threshold (monitor mode, if V
EN
is kept above 1.1 V)This reset mode can be left if PbF is enabled when the field is high
enough (RF field detected) to enter PbF mode.
To get out of reset, there are 2 ways:
- Pulling V
EN
high with V
BAT
above V
BAT
monitor threshold if enabled
- Entering a field strong enough to power the IC
Figure 5 Reset via V
EN
pin
Table 10 Reset Timing
Symbol
Parameter
Condition
Min
Typ
Max
Unit
t
RESETVEN
V
EN
pulse
width to reset
3
μ s
t
BOOT
Boot time
10
ms