C164SL datasheet(14/79 Pages) INFINEON

14 / 79 page

C164CI/SI

C164CL/SL

Data Sheet

V2.0, 2001-05

Note: The following behavioural 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 as if it were a hardware reset. In particular, 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.

P8.0

P8.1

P8.2

P8.3

I/O

Port 8 is a 4-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 8 outputs can be configured as push/

pull or open drain drivers. The input threshold of Port 8 is

selectable (TTL or special). Port 8 pins provide inputs/

outputs for CAPCOM2 and serial interface lines.1)

CC16IO

CAPCOM2: CC16 Capture Inp./Compare Outp.,

CAN1_RxD CAN 1 Receive Data Input

CC17IO

CAPCOM2: CC17 Capture Inp./Compare Outp.,

CAN1_TxD CAN 1 Transmit Data Output

CC18IO

CAPCOM2: CC18 Capture Inp./Compare Outp.,

CAN1_RxD CAN 1 Receive Data Input

CC19IO

CAPCOM2: CC19 Capture Inp./Compare Outp.,

CAN1_TxD CAN 1 Transmit Data Output

VAREF

–

Reference voltage for the A/D converter.

VAGND 80

–

Reference ground for the A/D converter.

VDD

7, 21,

40, 53,

–

Digital Supply Voltage:

+5 V during normal operation and idle mode.

≥2.5 V during power down mode.

VSS

6, 20,

41, 56,

–

Digital Ground.

1) The CAN interface lines are assigned to ports P4 and P8 under software control. Within the CAN module

several assignments can be selected.

Table 2

Pin Definitions and Functions (cont’d)

Symbol Pin

No.

Input

Outp.

Function

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