U2270B-MFP Atmel, U2270B-MFP Datasheet - Page 6
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U2270B-MFP
Manufacturer Part Number
U2270B-MFP
Description
IC RFID BASEREADER 125KHZ 16SOIC
Manufacturer
Atmel
Series
U2270Br
Datasheet
1.U2270B-MFPG3Y.pdf
(18 pages)
Specifications of U2270B-MFP
Rf Type
Read / Write
Frequency
125kHz
Features
Read/Write Base Station
Package / Case
16-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
U2270B-MFPG3Y
Manufacturer:
ATMEL
Quantity:
450
Part Number:
U2270B-MFPG3Y
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
U2270B-MFPY
Manufacturer:
MICROCHIP
Quantity:
1 200
Part Number:
U2270B-MFPY
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Table 3-1.
3.3
6
Operation Mode
One-rail operation
Two-rail operation
Battery-voltage operation
Oscillator (Osc)
U2270B
Characteristics of the Various Operation Modes
Figure 3-4.
The frequency of the on-chip oscillator is controlled by a current fed into the R
grated compensation circuit ensures a wide temperature range and a supply-voltage–
independent frequency which is selected by a fixed resistor between R
For 125 kHz, a resistor value of 110 k is defined. For other frequencies, use the following
formula:
This input can be used to adjust the frequency close to the resonance of the antenna. For more
details see Section
Figure 3-5.
R
External Components Required
1 voltage regulator
1 capacitor
2 voltage regulators
2 capacitors
1 transistor
2 capacitors
Optional, for load dump protection:
1 resistor
1 capacitor
t
k
=
-------------------- - 5
f
0
14375
kHz
Battery Operation
Equivalent Circuit of Pin R
–
“Applications” on page
DV
S
V
EXT
Supply-voltage Range
2 k
F
V
S
6V to 16V
10.
5V ±10%
5V ±10%
7V to 8V
V
Batt
Standby
V
R
S
F
7V to 16V
Voltage Swing
R
Driver Output
f
6V to 7V
4V
4V
F
(pin 15) and V
F
Standby Mode
input. An inte-
4684E–RFID–02/08
Available
Yes
No
No
S
(pin 14).