Datasheet

C167CR
C167SR
General Device Information
Data Sheet 21 V3.3, 2005-02
PORT1
P1L.0-7
P1H.0-3
P1H.4
P1H.5
P1H.6
P1H.7
K13,
K14,
J13,
J14,
H11,
H12,
H13,
G11
G13,
F11,
F12,
G14
F13
F14
E14
E13
IO
I
I
I
I
PORT1 consists of the two 8-bit bidirectional I/O ports P1L
and P1H. 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. PORT1 is used as the 16-bit
address bus (A) in demultiplexed bus modes and also after
switching from a demultiplexed bus mode to a multiplexed
bus mode.
The following PORT1 pins also serve for alternate functions:
CC24IO CAPCOM2: CC24 Capture Input
CC25IO CAPCOM2: CC25 Capture Input
CC26IO CAPCOM2: CC26 Capture Input
CC27IO CAPCOM2: CC27 Capture Input
PORT0
P0L.0-7
P0H.0-7
N10,
L9,
P11,
M10,
N11,
M11,
P12,
N12
L10,
K11,
L12,
L14,
L13,
K12,
J11,
J12
IO PORT0 consists of the two 8-bit bidirectional I/O ports P0L
and P0H. 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.
In case of an external bus configuration, PORT0 serves as
the address (A) and address/data (AD) bus in multiplexed
bus modes and as the data (D) bus in demultiplexed bus
modes.
Demultiplexed bus modes:
8-bit data bus: P0H = I/O, P0L = D7 - D0
16-bit data bus: P0H = D15 - D8, P0L = D7 - D0
Multiplexed bus modes:
8-bit data bus: P0H = A15 - A8, P0L = AD7 - AD0
16-bit data bus: P0H = AD15 - AD8, P0L = AD7 - AD0
RD
L8 O External Memory Read Strobe. RD is activated for every
external instruction or data read access.
Table 3 Pin Definitions and Functions P-BGA-176-2 (cont’d)
Symbol Pin
Num.
Input
Outp.
Function