mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 96

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

NXP Semiconductors
MFRC531_34
Product data sheet
PUBLIC
Table 160. Common read/write strobe timing specification for EPP
Remark:
cycle. The timings for the address write and data write cycle are different. In EPP mode,
the address lines (A0 to A2) must be connected as described in
Symbol
t
t
t
t
t
t
t
t
DSHDZ
DSLQV
DSHQX
DSHWX
DSLDSH
WLDSL
DSL-WAITH
DSH-WAITL
Fig 22.
Figure 22
Timing diagram for common read/write strobe; EPP
Parameter
data strobe HIGH to data input high
impedance time
data strobe LOW to data output
valid time
data output hold after data strobe
HIGH time
write hold after data strobe HIGH
time
data strobe LOW time
write LOW to data strobe LOW time nWrite valid to
data strobe LOW to WAIT HIGH
time
data strobe HIGH to WAIT LOW
time
D0 to D7
nDStrb
nAStrb
nWrite
nWait
NCS
does not distinguish between the address write cycle and a data write
Rev. 3.4 — 26 January 2010
056634
t
WLDSL
t
SLDSL
t
DSL-WAITH
t
t
DSLQV
DSLDV
Conditions
read cycle
nDStrb LOW
NCS HIGH
nWrite
nDStrb
nDStrb LOW
nDStrb LOW to
nWrite HIGH
nDStrb HIGH to
nWrite LOW
t
DSLDSH
D0 to D7
A0 toA7
ISO/IEC 14443 reader IC
t
Section 9.1.3 on page
DSHSH
…continued
t
t
DSHQX
DSHDZ
t
DSH-WAITL
t
Min Typ Max Unit
-
-
8
8
65
8
-
-
DSHWX
MFRC531
001aaj640
© NXP B.V. 2010. All rights reserved.
-
-
-
-
-
-
-
-
20
35
-
-
-
-
75
75
96 of 116
ns
ns
ns
ns
ns
ns
ns
ns
8.