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參數(shù)資料
| 型號： | TDA8031HL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | USB smart card reader (OTP or ROM) |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, MS-026, SOT-314-2, LQFP-64 |
| 文件頁數(shù)： | 32/57頁 |
| 文件大?。?/td> | 228K |
| 代理商： | TDA8031HL |
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2003 Jul 04
32
Philips Semiconductors
Product specification
USB smart card reader (OTP or ROM)
TDA8030; TDA8031
handbook, full pagewidth
MGU889
START
VUP
VCC
I/O
RST
CLK
t0
t1
t2
t3
t4 = tact
ATR
Fig.9 Activation sequence.
8.3.4
D
EACTIVATION SEQUENCE
When the session is completed, the microcontroller resets
START (t
10
). The circuit then executes an automatic
deactivation sequence as follows:
1.
Card reset (RST falls LOW; t
11
)
2.
Clock (CLK) is stopped LOW (t
12
)
3.
I/O, C4 and C8 fall to 0 V (t
13
)
4.
V
CC
falls to 0 V with typical 0.17 V/
μ
s slew rate (t
14
)
5.
The DC-to-DC converter is stopped and CLK, RST,
V
CC
,I/O,C4 and C8becomelow-impedancetoCGND
(t
15
).
Thus:
t
11
= t
10
+
1
64
t
t
12
= t
11
+
1
2
t
t
13
= t
11
+ t
t
14
= t
11
+
3
2
t
t
15
= t
11
+
7
2
t
t
de
= time that V
CC
needs to decrease to less than 0.3 V.
Automatic emergency deactivation is performed in the
following cases:
1.
Withdrawal of the card (PRES LOW)
2.
Overcurrent detection on V
CC
(bit PRTL set)
3.
Overcurrent detection on RST (bit PRTL set)
4.
Overheating (bit PTL set)
5.
Supply too low (bit SUPL set)
6.
RESET pin active HIGH.
In all of these cases, the deactivation sequence as
described above occurs.
If the reason for the deactivation is a card take-off, an
overcurrent or overheating, then INT0 will be LOW and the
corresponding bit in the Hardware Status Register will be
set. The START bit is automatically reset.
If the reason is a supply drop-out, then the deactivation
sequence occurs and a complete reset of the chip is
performed. When the supply recovers, then the SUPL bit
will be set in the HSR.
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| TDA8034AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart card interface |
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| TDA8034AT/C1,112 | 功能描述:接口 - 專用 SMART CARD INTERFACE RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| TDA8034AT/C1,118 | 功能描述:接口 - 專用 SMART CARD INTERFACE RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| TDA8034HN/C1,118 | 功能描述:接口 - 專用 SMART CARD INTERFACE RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
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