C164CI datasheet(8/53 Pages) INFINEON

8 / 53 page

Semiconductor Group

1998-02

C164CI

PORT1:

P1L.0 –

P1L.7,

P1H.0 -

P1H.7

47 - 52,

57 - 58

59,

62 - 68

...

I/O

...

PORT1 consists of the two 8-bit bidirectional I/O ports P1L and

P1H. It is bit-wise programmable for input or output via

direction bits. For a pin configured as input, the output driver is

put into high-impedance state.

The following Port 1 pins also serve for alternate functions:

P1L.0

CC60

CAPCOM6: Input / Output of Ch. 0

P1L.1

COUT60

CAPCOM6: Output of Channel 0

P1L.2

CC61

CAPCOM6: Input / Output of Ch. 1

P1L.3

COUT61

CAPCOM6: Output of Channel 1

P1L.4

CC62

CAPCOM6: Input / Output of Ch. 2

P1L.5

COUT62

CAPCOM6: Output of Channel 2

P1L.6

COUT63

Output of 10-bit Compare Channel

P1L.7

CTRAP

CAPCOM6: Trap Input

CTRAP is an input pin with an internal pullup resistor. A low

level on this pin switches the compare outputs of the

CAPCOM6 unit to the logic level defined by software.

P1H.0

CC6POS0

CAPCOM6: Position 0 Input

EX0IN

Fast External Interrupt 0 Input

P1H.1

CC6POS1

CAPCOM6: Position 1 Input

EX1IN

Fast External Interrupt 1 Input

P1H.2

CC6POS2

CAPCOM6: Position 2 Input

EX2IN

Fast External Interrupt 2 Input

P1H.3

EX3IN

Fast External Interrupt 3 Input

T7IN

CAPCOM2: Timer T7 Count Input

P1H.4

CC24IO

CAPCOM2: CC24 Capture Input

...

P1H.7

CC27IO

CAPCOM2: CC27 Capture Input

XTAL1

XTAL2

XTAL1:

Input to the oscillator amplifier and input to the

internal clock generator

XTAL2:

Output of the oscillator amplifier circuit.

To clock the device from an external source, drive XTAL1,

while leaving XTAL2 unconnected. Minimum and maximum

high/low and rise/fall times specified in the AC Characteristics

must be observed.

RSTIN

Reset Input with Schmitt-Trigger characteristics. A low level at

this pin for a specified duration while the oscillator is running

resets the C164CI. An internal pullup resistor permits power-

on reset using only a capacitor connected to

SS.

In bidirectional reset mode (enabled by setting bit BDRSTEN

in register SYSCON) the RSTIN line is pulled low for the

duration of the internal reset sequence upon a software or

WDT reset. 1)

Pin Definitions and Functions (cont’d)

Symbol

Number

Input (I)

Output (O)

Function

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