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ST7SCR Fiches technique(PDF) 7 Page - STMicroelectronics

No de pièce ST7SCR
Description  8-BIT LOW-POWER, FULL-SPEED USB MCU WITH 16K FLASH, 768 RAM, SMARTCARD I/F, TIMER
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7SCR Fiches technique(HTML) 7 Page - STMicroelectronics

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ST7SCR
7/102
PIN DESCRIPTION (Cont’d)
Legend / Abbreviations:
Type: I = input, O = output, S = supply
In/Output level: CT = CMOS 0.3VDD/0.7VDD with
input trigger
Output level: HS = 10mA high sink (on N-buffer
only)
Port and control configuration:
– Input:float = floating, wpu = weak pull-up, int = in-
terrupt, ana = analog
– Output: OD = open drain, PP = push-pull
Refer to “I/O PORTS” on page 30 for more details
on the software configuration of the I/O ports.
Table 1. Pin Description
Pin n°
Pin Name
Level
Port / Control
Main
Function
(after reset)
Alternate Function
Input Output
1
5
CRDRST
O
CT X
X
Smartcard Reset
2
NC
Not Connected
3
6
CRDCLK
O
CT X
X
Smartcard Clock
4
NC
Not Connected
57
C4
O
CT X
X
Smartcard C4
6
8
CRDIO
I/O
CT
X
X
X
Smartcard I/O
79
C8
O
CT X
X
Smartcard C8
8
3
GND
S
Ground
9
PB0
O
CT
X
X
Port B0 1)
10
PB1
O
CT
X
X
Port B1 1)
11
PB2
O
CT
X
X
Port B2 1)
12
PB3
O
CT
X
X
Port B3 1)
13
PB4
O
CT
X
X
Port B4 1)
14
PB5
O
CT
X
X
Port B5 1)
15
PB6
O
CT
X
X
Port B6 1)
16
PB7
O
CT
X
X
Port B7 1)
17 10 CRDDET
I
CT
X
Smartcard Detection
18
VDD
S
Power Supply voltage 4V-5.5V
19 11
PA0/WAKUP2/
ICCDATA
I/O
CT
X
X
X
X
Port A0
Interrupt, In-Circuit Communication
Data Input
20 12
PA1/WAKUP2/
ICCCLK
I/O
CT
X
X
X
X
Port A1
Interrupt, In-Circuit Communication
Clock Input
21
PA2/WAKUP2
I/O
CT
X
X
X
X
Port A2 1)
Interrupt
22
PA3/WAKUP2
I/O
CT
X
X
X
X
Port A3 1)
Interrupt
23
PD0
O
CT
X
X
Port D0 1)
24
PD1
O
CT
X
X
Port D1 1)
25
PD2
O
CT
X
X
Port D2 1)
1


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