ST7260E1 STMicroelectronics, ST7260E1 Datasheet - Page 121

• Manufacturer Part Number: ST7260E1
• Description: LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 8K FLASH/ROM AND SERIAL COMMUNICATION INTERFACE (SCI)
• Manufacturer: STMicroelectronics

Specifications of ST7260E1

• 4 Or 8 Kbytes Program Memory: high density Flash (HDFlash), or FastROM with readout and write protection

ST7260xx
16.8
16.8.1
I/O port pin characteristics
General characteristics
Subject to general operating conditions for V
Table 70.
1. Configuration not recommended, all unused pins must be kept at a fixed voltage: using the output mode of
2. The R
3. To generate an external interrupt, a minimum pulse width has to be applied on an I/O port pin configured
Figure 51. Two typical applications with unused I/O pin
Symbol
t
t
t
f(IO)out
r(IO)out
w(IT)in
V
R
V
V
C
V
the I/O for example or an external pull-up or pull-down resistor (see
taken at a fixed V
production. This value depends on V
characteristics described in
as an external interrupt source.
I
I
hys
PU
S
IH
IN
L
IO
IL
V
PU
DD
Input low level voltage
Input high level voltage
Input voltage
Schmitt trigger voltage
hysteresis
Input leakage current
Static current
consumption induced by
each floating input pin
Weak pull-up equivalent
resistor
I/O pin capacitance
Output high to low level
fall time
Output low to high level
rise time
External interrupt pulse
time
pull-up equivalent resistor is based on a resistive transistor (corresponding I
10k
I/O port characteristics
Ω
(3)
Parameter
(2)
IN
UNUSED I/O PORT
value, based on design simulation and technology characteristics, not tested in
Figure
ST72XXX
(1)
52).
DD
True open drain I/O
pins
Other I/O pins
V
Floating input mode
V
C
Between 10% and
90%
and temperature values.
SS
IN
L
=50 pF
=
≤
V
V
Conditions
SS
IN
≤
V
DD
DD
V
, f
DD
CPU
=5 V
, and T
10k
Ω
0.7xV
Figure
Min
V
50
A
1
SS
unless otherwise specified.
DD
UNUSED I/O PORT
51). Static peak current value
Electrical characteristics
Typ
400
400
90
25
25
ST72XXX
5
PU
current
0.3xV
Max
V
120
6.0
±1
DD
DD
121/139
Unit
t
mV
CPU
kΩ
μA
pF
ns
V
V