C166 Просмотр технического описания (PDF) - Infineon Technologies

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C166

16-Bit Single-Chip Microcontroller

Infineon Technologies 

&3,

Table 1

Pin Definitions and Functions (continued)

Symbol Pin Pin Input Function

Num. Num. Outp.

TQFP MQFP

P3

IO Port 3 is a 15-bit bidirectional I/O port. 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. Port 3 outputs can be

configured as push/pull or open drain drivers. The input

threshold of Port 3 is selectable (TTL or special). The

following Port 3 pins also serve for alternate functions:

P3.0 7

9

I/O SCL0

I2C Bus Clock Line 0

P3.1 8

10 I/O SDA0

I2C Bus Data Line 0

P3.2 9

11 I

CAPIN GPT2 Register CAPREL Capture Input

P3.3 10 12 O T3OUT GPT1 Timer T3 Toggle Latch Output

P3.4 11 13 I

T3EUD GPT1 Timer T3 External Up/Down Ctrl.Inp

P3.5 12 14 I

T4IN

GPT1 Timer T4 Count/Gate/Reload/

Capture Input

P3.6 13 15 I

T3IN

GPT1 Timer T3 Count/Gate Input

P3.7 14 16 I

T2IN

GPT1 Timer T2 Count/Gate/Reload/

Capture Input

P3.8 15 17 I/O MRST SSC Master-Rec. / Slave-Trans. Inp/Outp.

P3.9 16 18 I/O MTSR SSC Master-Trans. / Slave-Rec. Outp/Inp.

P3.10 17 19 O T×D0

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

P3.11 18 20 I/O R×D0

ASC0 Data Input (Async.) or I/O (Sync.)

P3.12 19 21 O BHE

External Memory High Byte Enable Signal,

O WRH

External Memory High Byte Write Strobe

P3.13 20 22 I/O SCLK

SSC Master Clock Outp. / Slave Clock Inp.

P3.15 21 23 O CLKOUT System Clock Output (=CPU Clock)

O FOUT

Programmable Frequency Output

Note: Pins P3.0 and P3.1 are open drain outputs only.

Data Sheet

7

1999-07

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