sri4k STMicroelectronics, sri4k Datasheet - Page 39

• Manufacturer Part Number: sri4k
• Description: 13.56 Mhz Short-range Contactless Memory Chip With 4096-bit Eeprom And Anticollision Functions
• Manufacturer: STMicroelectronics

SRI4K
10
DC and ac parameters
Table 7.
Table 8.
Table 9.
1. All timing measurements were performed on a reference antenna with the following characteristics:
MI
t
Symbol
RFR
Symbol
Symbol
t
t
C
CARRIER
MIN CD
V
RFSBL
External size: 75 mm x 48 mm
Number of turns: 3
Width of conductor: 1 mm
Space between 2 conductors: 0.4 mm
Value of the coil: 1.4 µH
Tuning Frequency: 14.4 MHz.
V
I
I
f
t
t
t
CC
CC
RET
TUN
t
CC
JIT
DR
f
t
t
t
DA
T
CC
W
, t
S
0
1
2
A
RFF
Regulated voltage
Supply current (active in Read)
Supply current (active in Write)
Retromodulation induced voltage
Internal tuning capacitor
External RF signal frequency
Carrier modulation index
10% Rise and Fall times
Minimum pulse width for Start bit
ASK modulation data jitter
Minimum time from carrier
generation to first data
Subcarrier frequency
Antenna reversal delay
Synchronization delay
Answer to new request delay
Time between request characters
Time between answer characters
Programming time for WRITE
Ambient operating temperature
Operating conditions
DC characteristics
AC characteristics
Parameter
Parameter
Parameter
(1)
With Auto-Erase cycle
With no Auto-Erase
Coupler to SRI4K
Coupler to SRI4K
SRI4K to Coupler
ISO 10373-6
V
V
MI=(A-B)/(A+B)
ETU = 128/f
13.56 MHz
Binary counter
Condition
CC
CC
cycle (OTP)
(EEPROM)
Condition
decrement
14 ETU
f
128/f
128/f
= 3.0 V
= 3.0 V
CC
/16
S
S
Min.
–20
CC
Min
2.5
20
DC and ac parameters
13.553
Min
132
0.8
–2
Max.
8
5
0
Typ
85
64
847.5
9.44
151
151
0
13.567
Max
2.5
Max
100
250
14
+2
57
3.5
3
5
7
Unit
°C
Unit
MHz
Unit
kHz
39/49
mV
µA
µA
pF
ms
ms
ms
ms
µs
µs
µs
µs
µs
µs
µs
µs
%
V