ST72611F1 Ver la hoja de datos (PDF) - STMicroelectronics
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ST72611F1 Datasheet PDF : 71 Pages
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ST7261
PIN DESCRIPTION (Cont’d)
Legend / Abbreviations:
Type:
I = input, O = output, S = supply
Input level: A = Dedicated analog input
Input level:
Output level:
C = CMOS 0.3VDD/0.7VDD,
CT= CMOS 0.3VDD/0.7VDD with input trigger
HS = high sink (on N-buffer only)
Port configuration capabilities:
– Input:
float = floating, wpu = weak pull-up, int = interrupt (\ =falling edge, / =rising edge),
ana = analog
– Output: OD = open drain, PP = push-pull
Table 1. Device Pin Description
Pin n°
Pin Name
Level
Port / Control
Input
Ou tput
Main
Fu nction
(after reset)
Alternate Function
9 14 VPP
11 16 OSCIN
12 17 OSCOUT
4 9 VSS
8 13 VDD
13 18 PB7/IT8
14 19 PB6/IT7/I CCDATA
15 20 PB5/IT6/I CCCLK
16 1 PB4/IT5
17 2 PB3
18 3 PB2
19 4 PB1
20 5 PB0/MCO
1 6 PA2/IT3
2 7 PA1/IT2
3 8 PA0/IT1/USBOE
10 15 RESET
5 10 USBDM
6 11 USBDP
7 12 USBVCC
S
x
S
S
I/O CT HS x
\
I/O CT HS x
\
I/O CT HS x
/
I/O CT HS x
/
I/O CT HS x
I/O CT HS x
I/O CT HS x
I/O CT HS x
I/O CT
x
\
I/O CT
X
\
I/O CT
X
\
I/O C
I/O
I/O
S
FLASH programming voltage (12V), must be
tied low in user mode.
These pins are used connect an external
clock source to the on-chip main oscillator.
Digital Ground Voltage
Digital Main Power Supply Voltage
x Port B7
x Port B6
x Port B5
x Port B4
Interrupt 8 input
Interrupt 7 input/In-Circuit
Communication Data
Interrupt 6 input/In-Circuit
Communication Clock
Interrupt 5 input
x Port B3
x Port B2
x Port B1
x Port B0
CPU clock output
x Port A2
Interrupt 3 input
x Port A1
Interrupt 2 input
x Port A0
Interrupt 1 input/USB Output
Enable
Top priority non maskable interrupt (active
low)
USB bidirectional data (data -)
USB bidirectional data (data +)
USB power supply 3.3V output
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