mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 93

• Manufacturer Part Number: mfrc531
• Description: Iso/iec 14443 Reader Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
MFRC531_34
Product data sheet
PUBLIC
13.4.1 Separate read/write strobe bus timing
13.4 AC electrical characteristics
Table 157. Antenna driver output pin characteristics
Table 158. Timing specification for separate read/write strobe
Symbol
V
V
I
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
O
LHLL
AVLL
LLAX
LLRWL
SLRWL
RWHSH
RLDV
RHDZ
WLQV
WHDX
RWLRWH
AVRWL
WHAX
RWHRWL
OH
OL
Parameter
HIGH-level output
voltage
LOW-level output
voltage
output current
Parameter
ALE HIGH time
address valid to ALE LOW time
address hold after ALE LOW
time
ALE LOW to read/write LOW
time
chip select LOW to read/write
LOW time
read/write HIGH to chip select
HIGH time
read LOW to data input valid
time
read HIGH to data input high
impedance time
write LOW to data output valid
time
data output hold after write
HIGH time
read/write LOW time
address valid to read/write
LOW time
address hold after write HIGH
time
read/write HIGH time
Rev. 3.4 — 26 January 2010
Conditions
V
V
V
V
transmitter; continuous wave;
peak-to-peak
056634
DD(TVDD)
DD(TVDD)
DD(TVDD)
DD(TVDD)
= 5.0 V; I
= 5.0 V; I
= 5.0 V; I
= 5.0 V; I
Conditions
ALE LOW to NRD or
NWR LOW
NCS LOW to NRD or
NWR LOW
NRD or NWR HIGH to
NCS HIGH
NRD LOW to data valid
NRD HIGH to data
high-impedance
NWR LOW to data valid
data hold time after
NWR HIGH
NRD or NWR
NRD or NWR LOW
(set-up time)
NWR HIGH (hold time)
OL
OL
OL
OL
= 20 mA
= 100 mA
= 20 mA
= 100 mA
ISO/IEC 14443 reader IC
Min
-
-
-
-
-
Min
20
15
8
15
0
0
-
-
-
8
65
30
8
150
MFRC531
© NXP B.V. 2010. All rights reserved.
Typ
4.97 -
4.85 -
30
150
-
Typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Max Unit
-
-
200
Max Unit
-
-
-
-
-
-
65
20
35
-
-
-
-
-
93 of 116
V
V
mV
mV
mA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns