C161K Просмотр технического описания (PDF) - Infineon Technologies

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производитель

C161K

16-Bit Single-Chip Microcontroller

Infineon Technologies 

C161K

C161O

Table 2

Pin Definitions and Functions (cont’d)

Symbol Pin Input Function

Num Outp.

P2

IO

Port 2 is a 7-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 2 outputs can be configured as push/

pull or open drain drivers. The following Port 2 pins serve for

alternate functions:

P2.9 72

I

EX1IN Fast External Interrupt 1 Input

P2.10 73

I

EX2IN Fast External Interrupt 2 Input

P2.11 74

I

EX3IN Fast External Interrupt 3 Input

P2.12 75

I

EX4IN Fast External Interrupt 4 Input

76

I

77

I

78

I

EX5IN Fast External Interrupt 5 Input

EX6IN Fast External Interrupt 6 Input

EX7IN Fast External Interrupt 7 Input

These external interrupts are only available in the C161O.

P5

I

P5.14 79

I

P5.15 80

I

Port 5 is a 2-bit input-only port with Schmitt-Trigger char. The

pins of Port 5 also serve as timer inputs:

T4EUD GPT1 Timer T4 External Up/Down Control Input

T2EUD GPT1 Timer T2 External Up/Down Control Input

VDD 4, 22, –

37, 64

Digital Supply Voltage:

+ 5 V or + 3 V during normal operation and idle mode.

≥ 2.5 V during power down mode.

VSS

1, 21, –

38, 63

Digital Ground.

Note: The following behavioral differences must be observed when the bidirectional

reset is active:

• Bit BDRSTEN in register SYSCON cannot be changed after EINIT and is cleared

automatically after a reset.

• The reset indication flags always indicate a long hardware reset.

• The PORT0 configuration is treated like on a hardware reset. Especially the bootstrap

loader may be activated when P0L.4 is low.

• Pin RSTIN may only be connected to external reset devices with an open drain output

driver.

• A short hardware reset is extended to the duration of the internal reset sequence.

Data Sheet

8

V2.0, 2001-01

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