ST72561 datasheet(236/262 Pages) STMICROELECTRONICS

236 / 262 page

ST72561

236/262

12.9 I/O PORT PIN CHARACTERISTICS

12.9.1 General Characteristics

Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.

Notes:

1. Data based on characterization results, not tested in production.

2. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.

3. When the current limitation is not possible, the VIN absolute maximum rating must be respected, otherwise refer to

IINJ(PIN) specification. A positive injection is induced by VIN>VDD while a negative injection is induced by VIN<VSS. Refer

to Section 12.2 on page 222 for more details.

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 Figure 129). Data based on design simulation and/or technology

characteristics, not tested in production.

5. The RPU pull-up equivalent resistor is based on a resistive transistor (corresponding IPU current characteristics de-

scribed in Figure 130).

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.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIL

Input low level voltage 1)

CMOS ports

0.3xVDD

VIH

Input high level voltage 1)

0.7xVDD

Vhys

Schmitt trigger voltage hysteresis 2)

VIL

Input low level voltage 1)

TTL ports

0.8

VIH

Input high level voltage 1)

Vhys

Schmitt trigger voltage hysteresis 2)

400

IINJ(PIN)

Injected Current on PB3

VDD=5V

Injected Current on any other I/O pin

± 4

ΣI

INJ(PIN)

3) Total injected current (sum of all I/O

and control pins) 7)

± 25

Ilkg

Input leakage current on robust pins See “10-BIT ADC CHARACTERISTICS” on page 246

Input leakage current

VSS≤VIN≤VDD

±1

µA

Static current consumption 4)

Floating input mode

200

RPU

Weak pull-up equivalent resistor 5)

VIN=VSS

VDD=5V

250

Ω

CIO

I/O pin capacitance

tf(IO)out

Output high to low level fall time 6)

CL=50pF

Between 10% and 90%

tr(IO)out

Output low to high level rise time 6)

tw(IT)in

External interrupt pulse time 7)

1tCPU

ST72561 Datasheet(PDF) 236 Page - STMicroelectronics

ST72561 Datasheet(HTML) 236 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL