Oki MSM66201, Техническое описание, Страница: 7 / 31

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¡ Semiconductor MSM66201/66P201/66207/66P207
PIN DESCRIPTION
Type Description Symbol
P0.0–P0.7/
AD0–AD7
P1.0–P1.7/
A8–A15
P2.0–P2.2
P2.5/HLDA
P2.6/T
X
C
AD: Outputs the lower 8 bits of program counter during external program memory fetch,
and receives the addressed instruction under the control of
PSEN
. This pin also
outputs the address and outputs or inputs data during an external data memory
access instruction, under the control of ALE,
RD
, and
WR
.
P1: 8-bit input-output port. Each bit can be assigned to input or output.
A: Outputs the upper 8 bits of program counter (PC
8–15
) during external program
memory fetch. This pin also outputs the upper 8 bits of address during external
data memory access instructions.
P2: 8-bit input-output port. Each bit can be assigned to input or output.
T
X
C: Transmitter clock input/output pin.
P3: 8-bit input-output port. Each bit can be assigned to input or output.
P2.4/HOLD
HOLD: Input pin to request the CPU to enter the hardware power-down state.
P3.0/T
X
D
P3.1/R
X
D
P0: 8-bit input-output port. Each bit can be assigned to input or output.
I/O
I/O
I/O
T
X
D: Transmitter data output pin.
I/O
HLDA: HOLD ACKNOWLEDGE: the HLDA signal appears in response to the HOLD
signal and indicates that the CPU has entered the power-down state.
P2.3/CLKOUT CLKOUT: Output pin for supplying a clock to peripheral circuits.
P2.7/R
X
C R
X
C: Receiver clock input/output pin.
P3.2/
INT0
R
X
D: Receiver data input pin.
P3.3/
INT1 INT
: Interrupt request input pin.
Falling edge trigger or level trigger is selectable.
P3.4/TM0IO
TM0IO-TM3IO: One of the following signals is output or input.
P3.5/TM1IO
P3.6/TM2IO
P3.7/TM3IO
• Clock at twice the frequency range of the 16-bit timer overflow
• Load trigger signal to the capture register input
• Setting value output
Whether the signal is input or output depends on the mode.
P4.0/TM0CK P4: 8-bit input-output port. Each bit can be assigned to input or output.
P4.1/TM1CK TM0CK, TM1CK: Clock input pins of timer 0, timer 1.
P4.2/PWM0
P4.3/PWM1
P4.4
– P4.7/
TRANS0 –
TRANS3
TRANS: Transition detector.
The input pins which sense the falling edge and set the flag.
PWM: 16-bit pulse-width modulator output pin.
I/O
P5.0 – P5.7/
AI0 –AI7
P5: 8-bit input port.
AI: Analog signal input pin for A/D converter.
I