Datasheet

C164CI/SI
C164CL/SL
Data Sheet 10 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
P8.0
P8.1
P8.2
P8.3
72
73
74
75
IO
I/O
I
I/O
O
I/O
I
I/O
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
V
AREF
1 – Reference voltage for the A/D converter.
V
AGND
80 – Reference ground for the A/D converter.
V
DD
7, 21,
40, 53,
61
– Digital Supply Voltage:
+5 V during normal operation and idle mode.
≥2.5 V during power down mode.
V
SS
6, 20,
41, 56,
60
– 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