AT85C51SND3B1 Datasheet, PDF (246/263 Pages) ATMEL Corporation – Single-Chip Digital Audio Decoder - Encoder with USB 2.0 Interface

AC Characteristics
NFC Interface
Definition of Symbols
Timings
AT85C51SND3Bx
Table 1. NFC Interface Timing Symbol Definitions
Signals
D
NFD7:0 In
H
O
NFD7:0 Out
L
R
NFRE
V
W
NFWE
X
E
NFCEn
Z
A
NFALE
C
NFCLE
Conditions
High
Low
Valid
No Longer Valid
Floating
Table 267. NFC Interface AC timings
V_DD = 1.65 to 3.6 V; T_A = -40 to +85°C, CL ≤ 40pF (4 NF)
Symbol
Parameter
Min
Max
Unit
T_ELWH
T_WHEH
T_CHWH
T_WHCL
T_AHWH
T_WHAL
T_WLWH
T_OVWH
T_WHOX
T_ELDV
NFCEn Write Setup Time
NFCEn Write Hold Time
NFCLE Setup Time
NFCLE Hold Time
NFALE Setup Time
NFALE Hold Time
NFWE Pulse Width
Data Setup Time
Data Hold Time
NFCEn Access Time
T_RLRH
NFRE Pulse Width
T_RLDV
T_RHDX
T_RHDZ
T_EHDZ
Note:
NFRE Access Time
Data Hold Time
Data Float after NFRE High
Data Float after NFCEn High
1. Refer to TRS bit in NFCON register.
3·T_NFC-??
1·T_NFC-??
3·T_NFC-??
1·T_NFC-??
3·T_NFC-??
1·T_NFC-??
2·T_NFC-??
2·T_NFC-??
1·T_NFC-??
??
2·T_NFC-??
3·T_NFC-??
??
??
??
??
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns⁽¹⁾
ns
ns
ns
ns
9
7632A–MP3–03/06