Datasheet

C167CR
C167SR
General Device Information
Data Sheet 12 V3.3, 2005-02
P3
P3.0
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
65
66
67
68
69
70
73
74
75
76
77
78
79
80
81
IO
I
O
I
O
I
I
I
I
I/O
I/O
O
I/O
O
O
I/O
O
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:
T0IN CAPCOM1 Timer T0 Count Input
T6OUT GPT2 Timer T6 Toggle Latch Output
CAPIN GPT2 Register CAPREL Capture Input
T3OUT GPT1 Timer T3 Toggle Latch Output
T3EUD GPT1 Timer T3 External Up/Down Control Input
T4IN GPT1 Timer T4 Count/Gate/Reload/Capture Inp.
T3IN GPT1 Timer T3 Count/Gate Input
T2IN GPT1 Timer T2 Count/Gate/Reload/Capture Inp.
MRST SSC Master-Receive/Slave-Transmit Inp./Outp.
MTSR SSC Master-Transmit/Slave-Receive Outp./Inp.
TxD0 ASC0 Clock/Data Output (Async./Sync.)
RxD0 ASC0 Data Input (Async.) or Inp./Outp. (Sync.)
BHE
External Memory High Byte Enable Signal,
WRH
External Memory High Byte Write Strobe
SCLK SSC Master Clock Output / Slave Clock Input.
CLKOUT System Clock Output (= CPU Clock)
OWE
(
V
PP
)
84 I Oscillator Watchdog Enable. This input enables the oscillator
watchdog when high or disables it when low e.g. for testing
purposes. An internal pull-up device holds this input high if
nothing is driving it.
For normal operation pin OWE should be high or not
connected.
In order to drive pin OWE low draw a current of at least
200 µA.
Table 2 Pin Definitions and Functions P-MQFP-144-8 (cont’d)
Symbol Pin
No.
Input
Outp.
Function