C167CR
C167SR
General Device Information
Data Sheet
19
V3.3, 2005-02
P8
P8.0
P8.1
P8.2
P8.3
P8.4
P8.5
P8.6
P8.7
B10
A10
D9
C9
B9
A9
D8
C8
IO
I/O
Port 8 is an 8-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).
The following Port 8 pins also serve for alternate functions:
CC16IO
CAPCOM2: CC16 Capture Inp./Compare Outp.
CC17IO
CAPCOM2: CC17 Capture Inp./Compare Outp.
CC18IO
CAPCOM2: CC18 Capture Inp./Compare Outp.
CC19IO
CAPCOM2: CC19 Capture Inp./Compare Outp.
CC20IO
CAPCOM2: CC20 Capture Inp./Compare Outp.
CC21IO
CAPCOM2: CC21 Capture Inp./Compare Outp.
CC22IO
CAPCOM2: CC22 Capture Inp./Compare Outp.
CC23IO
CAPCOM2: CC23 Capture Inp./Compare Outp.
P6
P6.0
P6.1
P6.2
P6.3
P6.4
P6.5
P6.6
P6.7
A13
B12
D10
C11
A12
B11
C10
A11
IO
O
I
I/O
O
Port 6 is an 8-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 6 outputs can be configured as
push/pull or open drain drivers. The input threshold of Port 6
is selectable (TTL or special).
The Port 6 pins also serve for alternate functions:
CS0
Chip Select 0 Output
CS1
Chip Select 1 Output
CS2
Chip Select 2 Output
CS3
Chip Select 3 Output
CS4
Chip Select 4 Output
HOLD
External Master Hold Request Input
HLDA
Hold Acknowledge Output (master mode) or
Input (slave mode)
BREQ
Bus Request Output
NMI
C14
I
Non-Maskable Interrupt Input. A high to low transition at this
pin causes the CPU to vector to the NMI trap routine. When
the PWRDN (power down) instruction is executed, the NMI
pin must be low in order to force the C167CR to go into power
down mode. If NMI is high, when PWRDN is executed, the
part will continue to run in normal mode.
If not used, pin NMI should be pulled high externally.
Table 3
Pin Definitions and Functions P-BGA-176-2 (cont’d)
Symbol Pin
Num.
Input
Outp.
Function