XC164CS datasheet(12/71 Pages) INFINEON

12 / 71 page

XC164

Derivatives

General Device Information

Data Sheet

V2.1, 2003-06

TRST

Test-System Reset Input. A high level at this pin activates

the XC164’s debug system. For normal system operation,

pin TRST should be held low.

P3.1

P3.2

P3.3

P3.4

P3.5

P3.6

P3.7

P3.8

P3.9

P3.10

P3.11

P3.12

P3.13

P3.15

I/O

Port 3 is a 14-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 3 is selectable (standard

or special).

The following Port 3 pins also serve for alternate functions:

T6OUT

GPT2 Timer T6 Toggle Latch Output,

RxD1

ASC1 Data Input (Async.) or Inp./Outp. (Sync.),

EX1IN

Fast External Interrupt 1 Input (alternate pin A),

TCK

Debug System: JTAG Clock Input

CAPIN

GPT2 Register CAPREL Capture Input,

TDI

Debug System: JTAG Data In

T3OUT

GPT1 Timer T3 Toggle Latch Output,

TDO

Debug System: JTAG Data Out

T3EUD

GPT1 Timer T3 External Up/Down Control Input,

TMS

Debug System: JTAG Test Mode Selection

T4IN

GPT1 Timer T4 Count/Gate/Reload/Capture Inp

TxD1

ASC0 Clock/Data Output (Async./Sync.),

BRKOUT

Debug System: Break Out

T3IN

GPT1 Timer T3 Count/Gate Input

T2IN

GPT1 Timer T2 Count/Gate/Reload/Capture Inp

BRKIN

Debug System: Break In

MRST0

SSC0 Master-Receive/Slave-Transmit In/Out.

MTSR0

SSC0 Master-Transmit/Slave-Receive Out/In.

TxD0

ASC0 Clock/Data Output (Async./Sync.),

EX2IN

Fast External Interrupt 2 Input (alternate pin B)

RxD0

ASC0 Data Input (Async.) or Inp./Outp. (Sync.),

EX2IN

Fast External Interrupt 2 Input (alternate pin A)

BHE

External Memory High Byte Enable Signal,

WRH

External Memory High Byte Write Strobe,

EX3IN

Fast External Interrupt 3 Input (alternate pin B)

SCLK0

SSC0 Master Clock Output / Slave Clock Input.,

EX3IN

Fast External Interrupt 3 Input (alternate pin A)

CLKOUT

System Clock Output (=CPU Clock),

FOUT

Programmable Frequency Output

Table 2

Pin Definitions and Functions (cont’d)

Symbol Pin

Num.

Input

Outp.

Function

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