Infineon Technologies CYPRESS Traveo Series Manual page 155

• Use at DC voltage (current).
MCU is operational, IO is driving LOW level (i.e. NMOS transistor active), there are negative biased pulses (-B signal) applied
to active IO according to following specification (must not be exceeded).
Pulse condition specification:
U_pulse = max -40 V
T_pulse = max 1 ms
#_pulse = max 5000
Current and Power Dissipation
U_peak = -40 V
R_serial = 22 k
=> I_pin = 1.8 mA
U_out = -0.1 V (current drawn mainly over NMOS transistor)
=> I_total = 50 pins x 1.8 mA = 90 mA
=> P_total = 50 pins x (1.8 mA x 0.1V) = 9 mW
I_total and P_total are within allowed limits of extended specification.
• The - B signal should always be applied by connecting a limiting resistor between the - B signal and the microcontroller.
• The value of the limiting resistor should be set so that the current input to the microcontroller pin does not exceed rated
values at any time regardless of instantaneously or constantly when the - B signal is input.
• Do not leave - B input pins open.
Example of a recommended circuit
S6J3350 series
WARNING:
−
Semiconductor devices may be permanently damaged by application of stress (including, without limitation, voltage, current
or temperature) in excess of absolute maximum ratings. Do not exceed any of these ratings.
*C Relevant pins: All general-purpose ports and analog input pins
• Corresponding pins: all general-purpose ports
• Use within non operation conditions. The device is not supplied (VCC5: off, VCC12: off, VCC53: off).
Document Number: 002-10634 Rev. *J
S6J3350 Series
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