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ST8034C Datasheet(PDF) 11 Page - STMicroelectronics

Part # ST8034C
Description  16-pin smartcard interfaces
Download  39 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST8034C Datasheet(HTML) 11 Page - STMicroelectronics

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Pin description
ST8034T, ST8034AT, ST8034P, ST8034C
12/40
DocID024587 Rev 4
Table 3. Pin description ST8034P and ST8034C
Pin number
Symbol
Ref. supply
Function
1VDD(INTF)
Microcontroller interface supply voltage (input)
2RSTIN
VDD(INTF)
Card reset input from microcontroller
3CS
VDD(INTF)
Chip select input. CS = high => device is active, low =>
all microcontroller interface pins set to high impedance.
(ST8034C)
VCC_SEL
VDD(INTF)
VCC (card supply) selection input: logic high selects
VCC = 5 V, logic low selects VCC = 3 V, left-floating
selects VCC = 1.8 V. (ST8034P)
4CMDVCC
VDD(INTF)
Start activation sequence input (from microcontroller,
active low)
5PRES
VDD(INTF)
Card presence input (active low: PRES = low => card is
present). Debounced.
6I/O
VCC
Card input/output data line (C7); with internal 9 k
pull-up resistor to VCC
7
GND
Ground
8CLK
VCC
Clock to card (C3)
9RST
VCC
Card reset, output (C2)
10
VCC
Supply voltage for the card, output (C1)
11
VDDP
LDO supply voltage input (for VCC generation)
12
VDD
Control logic supply voltage input
13
PORADJ
VDD(INTF)
Power-on reset threshold adjustment input
14
OFF
VDD(INTF)
Interrupt to microcontroller (active low output, with
internal 20 k
 pull-up resistor to VDD(INTF))
15
I/OUC
VDD(INTF)
Microcontroller data I/O line (with internal 10 k
 pull-up
resistor connected to VDD(INTF))
16
CLKIN
VDD(INTF)
External clock input


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