Datasheet

C167CS-4R
C167CS-L
Data Sheet 8 V2.2, 2001-08
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
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.
T
×D0 ASC0 Clock/Data Output (Async./Sync.)
R
×D0 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)
FOUT Programmable Frequency Output
N.C. 84 – This pin is not connected in the C167CS.
No connection to the PCB is required.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin
Num.
Input
Outp.
Function