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XC164KM

16-Bit Single-Chip Microcontroller with C166SV2 Core

Infineon Technologies 

XC164LM

Derivatives

General Device Information

Table 2

Pin Definitions and Functions

Sym- Pin Input Function

bol

Num. Outp.

RSTIN 63

I

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

at this pin while the oscillator is running resets the XC164LM.

A spike filter suppresses input pulses < 10 ns. Input pulses

> 100 ns safely pass the filter. The minimum duration for a

safe recognition should be 100 ns + 2 CPU clock cycles.

Note: The reset duration must be sufficient to let the

hardware configuration signals settle.

External circuitry must guarantee low-level at the

RSTIN pin at least until both power supply voltages

have reached the operating range.

NMI 64

I

Non-Maskable Interrupt Input. A high to low transition at this

pin causes the CPU to vector to the NMI trap routine. When

the PWRDN (power down) instruction is executed, the NMI

pin must be low in order to force the XC164LM into power

down mode. If NMI is high, when PWRDN is executed, the

part will continue to run in normal mode.

If not used, pin NMI should be pulled high externally.

Port 9 43-48 IO

P9.0 43

I/O

I

P9.1 44

I/O

P9.2 45

I/O

I

P9.3 46

I/O

P9.4 47

I/O

P9.5 48

I/O

Port 9 is a 6-bit bidirectional I/O port. Each pin can be

programmed for input (output driver in high-impedance state)

or output (configurable as push/pull or open drain driver). The

input threshold of Port 9 is selectable (standard or special).

The following Port 9 pins also serve for alternate functions:

CC16IO: (CAPCOM2) CC16 Capture Inp./Compare Outp.,

EX5IN: (Fast External Interrupt 5) Input (alternate pin A)

CC17IO: (CAPCOM2) CC17 Capture Inp./Compare Outp.,

CC18IO: (CAPCOM2) CC18 Capture Inp./Compare Outp.,

EX4IN: (Fast External Interrupt 4) Input (alternate pin A)

CC19IO: (CAPCOM2) CC19 Capture Inp./Compare Outp.,

CC20IO: (CAPCOM2) CC20 Capture Inp./Compare Outp.

CC21IO: (CAPCOM2) CC21 Capture Inp./Compare Outp.

Note: At the end of an external reset P9.4 and P9.5 also may

input startup configuration values

Data Sheet

9

V1.2, 2007-03

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