AT88RF1354_09 ATMEL [ATMEL Corporation], AT88RF1354_09 Datasheet - Page 17

• Manufacturer Part Number: AT88RF1354_09
• Description: 13.56 MHz Type B RF Reader Specification
• Manufacturer: ATMEL [ATMEL Corporation]

6.2.2. Digital I/O Characteristics
6.3.
6.3.1. System and Reset Timing
8547B–RFID–3/09
T
Note:
AC Characteristics
T
Note:
f
t
t
t
t
SCK
RST
OSC
RF_ON
RF_OFF
Symbol
C
V
V
V
R
R
R
R
C
Symbol
IL
IH
OL1
SDA
RST
PU
PD
= -40° to +85° C (unless otherwise noted)
= -40° to +85° C (unless otherwise noted)
1. Typical values at 25° C. Maximum values are characterized values and not test limits in production.
2. Optimum pull-up resistance is dependent on the total capacitance of the TWI serial interface bus.
3. This parameter is not tested. Values are based on characterization and/or simulation data.
1. Typical values at 25° C. Maximum values are characterized values and not test limits in production.
2. RF performance is dependent on the reader circuit design, PCB layout, and component specifications.
3. This parameter is not tested. Values are based on characterization and/or simulation data.
Serial Interface Clock Frequency
Minimum pulse width on ResetB Pin
Crystal Oscillator start-up time
RF Enable time
RF Disable time
Input Low Voltage
Input High Voltage
Output Low Voltage
(SDI pin TWI mode only)
I/O pin Pull-up Resistor
ResetB Pull-up Resistor
Input Pull-up Resistor
Input Pull-down Resistor
RF timing values in table are measured on an Atmel reference design.
Parameter
Parameter
(2) (3)
(2) (3)
(3)
(2) (3)
(3)
(3)
(3)
V
I
TWI mode, SCK = 100kHz
TWI mode, SCK = 1 MHz
Unused input pin
Unused input pin
OL
CC
= max
= 3
13.56 MHz Type B RF Reader Specification
Condition
TWI mode
SPI mode
At power-up
From end of command to RF 90% power
From end of command to RF 10% power
mA
(1)
(1)
Condition
0.7V
-0.5
Min
1.0
1.0
0
0
CC
V
CC
= 3.0 to 3.6 V
Typical
10
10
500
Min
V
CC
V
0.3V
CC
= 3.0 to 3.6 V
Max
0.4
4.0
2.0
Typical
1000
+0.5
4.5
1.7
CC
Max
1.0
2.0
0.7V
-0.5
Min
1.7
1.7
0
0
V
CC
CC
500
Min
V
= 4.5 to 5.5 V
CC
Typical
= 4.5 to 5.5 V
10
10
Typical
1000
1.8
1.7
V
0.3V
CC
Max
0.4
8.0
3.3
Max
1.0
2.0
+0.5
CC
Units
MHz
MHz
kOhm
kOhm
kOhm
kOhm
kOhm
17
Units
uS
uS
uS
uS
V
V
V