ATA5423_06 ATMEL [ATMEL Corporation], ATA5423_06 Datasheet - Page 30

• Manufacturer Part Number: ATA5423_06
• Description: UHF ASK/FSK Transceiver
• Manufacturer: ATMEL [ATMEL Corporation]

5. Power Supply
Figure 5-1.
30
ATA5423/25/28/29
PWR_ON
VSINT
VAUX
(Control Register 3)
(Control Register 1)
Power Supply
(Command via SPI)
VSOUT_EN
VS1
VS2
AVCC_EN
DVCC_OK
T1
T5
OFFCMD
0.55 V
VS1 +
typ.
IN
BR_Range ⇒
The supply voltage range of the ATA5423/ATA5425/ATA5428/ATA5429 is 2.4V to 3.6V or 4.4V
to 6.6V.
Pin VS1 is the supply voltage input for the range 2.4V to 3.6V and is used in 1 Li battery applica-
tions (3V) using a single lithium 3V cell. Pin VS2 is the voltage input for the range 4.4V to 6.6V
(2 Li battery application (6V) and Base-station Application (5V); in this case, the voltage regula-
tor V_REG1 regulates VS1 to typically 3.25V. If the voltage regulator is active, a blocking
capacitor of 2.2 µF has to be connected to VS1.
Pin VAUX is an input for an additional auxiliary voltage supply and can be connected, for exam-
ple, to an inductive supply (see
3.25 V typ.
≥ 1
≥ 1
V_REG2
(Status Register)
P_On_Aux
EN
S R Q
0 0 no change
0 1 0
1 0 1
1 1 1
IN
R
S
FF1
OUT
3.25 V typ.
Q
V_REG1
EN
and
OUT
SW_VSOUT
Figure 5-6 on page
BR_Range 0: T
BR_Range 1: T
BR_Range 2: T
BR_Range 3: T
SW_AVCC
SW_DVCC
36). This input can only be used together
2.38 V typ.)
XDCLK
XDCLK
XDCLK
XDCLK
V_Monitor
(2.3 V/
(1.5 V typ.)
V_Monitor
= 8 × T
= 4 × T
= 2 × T
= 1 × T
DCLK
DCLK
DCLK
DCLK
VSOUT_OK
(to XTO and
Reset Logic)
Low_Batt
(Status Register
and Reset Logic)
× X
× X
× X
× X
DVCC_OK
(to XTO and
Reset Logic)
AVCC
DVCC
VSOUT
Lim
Lim
Lim
Lim
4841C–WIRE–05/06