Datasheet

XC164-32
Derivatives
General Device Information
Data Sheet 11 V1.1, 2006-08
TRST 36 I Test-System Reset Input. A high level at this pin activates
the XC164CS’s debug system. For normal system operation,
pin TRST
should be held low.
P3
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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
IO
O
I/O
I
I
I
I
O
O
I
I
I
O
O
I
I
I
I/O
I/O
O
I
I/O
I
O
O
I
I/O
I
O
O
Port 3 is a 14-bit bidirectional I/O port. Each pin can be
programmed for input (output driver in high-impedance
state) or output (configurable as push/pull or open drain
driver). The input threshold of Port 3 is selectable (standard
or special).
The following Port 3 pins also serve for alternate functions:
T6OUT GPT2 Timer T6 Toggle Latch Output,
RxD1 ASC1 Data Input (Async.) or Inp./Outp. (Sync.),
EX1IN Fast External Interrupt 1 Input (alternate pin A),
TCK Debug System: JTAG Clock Input
CAPIN GPT2 Register CAPREL Capture Input,
TDI Debug System: JTAG Data In
T3OUT GPT1 Timer T3 Toggle Latch Output,
TDO Debug System: JTAG Data Out
T3EUD GPT1 Timer T3 External Up/Down Control Input,
TMS Debug System: JTAG Test Mode Selection
T4IN GPT1 Timer T4 Count/Gate/Reload/Capture In.,
TxD1 ASC0 Clock/Data Output (Async./Sync.),
BRKOUT
Debug System: Break Out
T3IN GPT1 Timer T3 Count/Gate Input
T2IN GPT1 Timer T2 Count/Gate/Reload/Capture In.,
BRKIN
Debug System: Break In
MRST0 SSC0 Master-Receive/Slave-Transmit In/Out.
MTSR0 SSC0 Master-Transmit/Slave-Receive Out/In.
TxD0 ASC0 Clock/Data Output (Async./Sync.),
EX2IN Fast External Interrupt 2 Input (alternate pin B)
RxD0 ASC0 Data Input (Async.) or Inp./Outp. (Sync.),
EX2IN Fast External Interrupt 2 Input (alternate pin A)
BHE
External Memory High Byte Enable Signal,
WRH
External Memory High Byte Write Strobe,
EX3IN Fast External Interrupt 3 Input (alternate pin B)
SCLK0 SSC0 Master Clock Output / Slave Clock Input,
EX3IN Fast External Interrupt 3 Input (alternate pin A)
CLKOUT System Clock Output (= CPU Clock),
FOUT Programmable Frequency Output
Table 2 Pin Definitions and Functions (cont’d)
Sym-
bol
Pin
Num.
Input
Outp.
Function