ATA5423 ATMEL Corporation, ATA5423 Datasheet - Page 32

• Manufacturer Part Number: ATA5423
• Manufacturer: ATMEL Corporation

Figure 5-2.
5.1
32
OFF Mode
ATA5423/25/28/29 [Preliminary]
Operation Modes Flow Chart
VSOUT = VS1 or
Bit AVCC_EN = 0 and OFF Command and
VSOUT = VS1
AVCC = VS1
DVCC = VS1
AVCC = VS1
DVCC = VS1
IDLE Mode
OPM1 OPM0
TX Mode
V_REG2
0
1
1
Pin T1, T2, T3, T4 and T5 = 1
Pin PWR_ON = 0 and
Pin T1, T2, T3, T4 or
Pin PWR_ON = 1 or
If the power supply (battery) is connected to pin VS1 and/or VS2, and if the voltage on pin VAUX
V
VSOUT are disabled, resulting in very low power consumption (I
mode the transceiver is not programmable via the 4–wire serial interface.
1
0
1
VAUX
TX Mode
RX Polling Mode
RX Mode
T5 = 0
OPM1 = 1 and OPM0 = 1
< 3.5 V (typically), then the transceiver is in OFF mode. In OFF mode AVCC, DVCC and
OPM1 = 0 and OPM0 = 1
OPM1 = 1 and OPM0 = 0
V
V
VAUX
VAUX
< VS1 + 0.5V
> VS1 + 0.5V
VSOUT_EN = 0
VSOUT = V_REG2
OPM1 = 0 and OPM0 = 1
RX Polling Mode
RX Polling Mode
VSOUT = VS1 or
VSOUT = OFF
VSOUT = OFF
DVCC = OFF
AVCC = OFF
DVCC = VS1
DVCC = VS1
DVCC = VS1
AVCC = VS1
AVCC = VS1
AVCC = VS1
IDLE Mode
OFF Mode
V_REG2
Statusbit Power_On = 1
or
Event on Pin T1, T2, T3, T4 or T5
Status bit Power_On = 1
or
Event on Pin T1, T2, T3,
T4 or T5
VSOUT_EN = 0
OPM1 = 1 and OPM0 = 0
OPM1 = 1 and OPM0 = 1
Pin T1, T2, T3, T4 and
Bit AVCC_EN = 0 and
Pin PWR_ON = 0 and
Pin T1, T2, T3, T4 or
Pin PWR_ON = 1 or
OFF Command and
or Bit check ok
Bit AVCC_EN = 1
Pin T5 = 0 or
T5 = 1
Bit check ok
V
VAUX
V
VAUX
> 3.5 V (typ)
< 3.5 V (typ)
VSOUT = V_REG2
DVCC = V_REG2
VSOUT = VS1 or
VSOUT = OFF
AVCC = OFF
S_OFF
AVCC = VS1
DVCC = VS1
AVCC = VS1
DVCC = VS1
IDLE Mode
AUX Mode
RX Mode
V_REG2
is typically 10 nA). In OFF
4841A–RKE–02/05