TC1775 Datasheet, PDF (25/101 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1775
Preliminary
Table 1
Pin Definitions and Functions (cont’d)
Symbol Pin
In Functions
Out
N.C.1
AB15, –
D10,
Y14
Not Connected 1
These pins must not be connected.
N.C.2
AB22, –
C14,
K3,
AC3,
L4,
D21,
Y16
Not Connected 2
For compatibility reasons, these pins should not be
connected. Any connection to 5 V does not harm the device.
1) _{After reset, an internal pull-up device is enabled for this pin.}
2) _{After reset, an internal pull-down device is enabled for this pin.}
3) _{These pins have an internal pull-down device connected.}
4) _{These pins have an internal pull-up device connected.}
5) _{The TC1775 BA11 step has an internal pull-up device connected to this pin.}
6) _{The voltage on power supply pins marked with} 8) _{has to be raised earlier or at least at the same time as on}
power supply pins marked with ⁶⁾ (details see power supply section on Page 62).
7) _{In order to minimize the danger of latch-up conditions, these 2.5 V VDD power supply pins should be kept at}
the same voltage level during normal operating mode. This condition is best achieved by generating the 2.5 V
power supplies from a single voltage source. The condition is also valid in normal operating mode if a separate
stand-by power supply V_DDSB is used.
8) _{The voltage on power supply pins marked with} 8) _{has to be raised earlier or at least at the same time as on}
power supply pins marked with ⁶⁾ (details see power supply section on Page 62).
Data Sheet
21
V1.2, 2002-05