ST72C334J2B6 STMicroelectronics, ST72C334J2B6 Datasheet - Page 128

• Manufacturer Part Number: ST72C334J2B6
• Description: 8-bit Microcontrollers - MCU Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334J2B6

• Product Category: 8-bit Microcontrollers - MCU
• Core: ST7
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• On-chip Adc: Yes
• Operating Supply Voltage: 3.2 V to 5.5 V
• Package / Case: SDIP-42
• Mounting Style: Through Hole
• A/d Bit Size: 8 bit
• A/d Channels Available: 8
• Data Rom Size: 256 B
• Interface Type: SCI, SPI
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 32
• Number Of Timers: 4 bit
• Program Memory Type: Flash
• Factory Pack Quantity: 13
• Supply Voltage - Max: 5 V
• Supply Voltage - Min: 3.2 V

ST72334J/N, ST72314J/N, ST72124J
16.8 I/O PORT PIN CHARACTERISTICS
16.8.1 General Characteristics
Subject to general operating conditions for V
Figure 82. Two typical Applications with unused I/O Pin
Figure 83. Typical I
Notes:
1. Unless otherwise specified, typical data are based on T
2. Data based on characterization results, not tested in production.
3. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.
4. Configuration not recommended, all unused pins must be kept at a fixed voltage: using the output mode of the I/O for
example or an external pull-up or pull-down resistor (see
characteristics, not tested in production.
5. The R
scribed in
6. Data based on characterization results, not tested in production.
7. 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.
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Symbol
t
t
t
f(IO)out
r(IO)out
w(IT)in
V
R
C
Ipu [µA]
70
60
50
40
30
20
10
V
V
I
I
0
hys
PU
S
IH
L
IO
IL
3.2
PU
Figure
pull-up equivalent resistor is based on a resistive transistor (corresponding I
Input low level voltage
Input high level voltage
Schmitt trigger voltage hysteresis
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
Ta=-40°C
Ta=25°C
3.5
83). This data is based on characterization results, tested in production at V
V
DD
PU
Parameter
10k
4
Vdd [V]
vs. V
Ta=85°C
Ta=125°C
DD
4.5
UNUSED I/O PORT
2)
2)
with V
4)
7)
ST72XXX
5
IN
6)
5)
6)
3)
=V
V
Floating input mode
V
C
Between 10% and 90%
SS
5.5
DD
SS
IN
L
=50pF
, f
V
V
SS
OSC
IN
Conditions
Figure
A
=25°C and V
V
, and T
DD
V
V
82). Data based on design simulation and/or technology
DD
DD
=5V
=3.3V
A
unless otherwise specified.
DD
10k
=5V.
0.7xV
Min
170
62
1
UNUSED I/O PORT
DD
Typ
ST72XXX
PU
400
120
200
25
25
5
current characteristics de-
DD
1)
max.
0.3xV
Max
200
250
300
±1
DD
Unit
t
mV
CPU
k
pF
ns
V
A