ST72264G2 STMicroelectronics, ST72264G2 Datasheet - Page 144

• Manufacturer Part Number: ST72264G2
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72264G2

• 4 K Or 8 Kbytes Program Memory: ROM or single voltage extended Flash (XFlash) with read-out protection, write protection, In-Circuit Programming and In-Application Programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt,Wait and Slow
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes

ST72260Gx, ST72262Gx, ST72264Gx
13.8 I/O PORT PIN CHARACTERISTICS
13.8.1 General Characteristics
T
Notes:
1. Data based on characterization results, not tested in production.
2. I
respected, the injection current must be limited externally to the I
while a negative injection is induced by V
corresponding V
Caution: Negative current injection not allowed on Flash device pins PB0 and PB1.
3. Configuration not recommended, all unused pins must be kept at a fixed voltage: using the output mode of the I/O for
example and leaving the I/O unconnected on the board or an external pull-up or pull-down resistor (see
based on design simulation and/or technology characteristics, not tested in production.
4. The R
scribed in
5. To generate an external interrupt, a minimum pulse width has to be applied on an I/O port pin configured as an external
interrupt source.
Figure 76. Two typical Applications with unused I/O Pin configured as input
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ΣI
I
A
Symbol
INJ(PIN)
t
t
INJ(PIN)
t
f(IO)out
r(IO)out
w(IT)in
INJ(PIN)
V
R
= -40 to +85°C unless otherwise specified
C
V
V
I
I
hys
PU
S
IH
L
IO
IL
Note: I/O can be left unconnected if it is configured as output (0 or 1) by the software. This has the advantage of greater EMC
robustness and lower cost.
2)
PU
2)
Figure
must never be exceeded. This is implicitly insured if V
Input low level voltage
Input high level voltage
Schmitt trigger voltage hysteresis
Injected current on Flash device
pins PB0 and PB1
Injected Current on other I/O pins
Total injected current (sum of all I/O
and control pins)
Input leakage current
Static current consumption
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
IN
77).
maximum must always be respected.
V
DD
Parameter
10kΩ
UNUSED I/O PORT
1)
1)
5)
IN
ST7XXX
<V
4)
1)
SS
1)
1)
. For true open-drain pads, there is no positive injection current, and the
V
V
Floating input mode
V
C
Between 10% and 90%
DD
SS
IN
L
=50pF
=
≤
=5V
V
V
SS
IN
Conditions
≤
V
DD
V
V
INJ(PIN)
DD
DD
IN
=5V
=3V
maximum is respected. If V
3)
value. A positive injection is induced by V
10kΩ
0.7xV
V
170
ss
Min
50
1
- 0.3
UNUSED I/O PORT
1)
DD
ST7XXX
PU
Typ
400
400
190
85
25
25
5
current characteristics de-
IN
maximum cannot be
V
0.3xV
DD
230
Max
±25
250
+4
±4
±1
Figure
+ 0.3
1)
DD
76). Data
IN
t
Unit
mV
mA
CPU
µA
kΩ
pF
ns
V
>V
DD