MSM65355 Просмотр технического описания (PDF) - Oki Electric Industry
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MSM65355 Datasheet PDF : 18 Pages
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¡ Semiconductor
MSM65355
PIN DESCRIPTIONS
Basic Function
Function Pin
Power
68
79
31
21
30
96
97
98
99
100
Oscillator 78
77
80
81
Control
87
Ports
76
to
69
67
to
60
86
to
82
22
to
29
51
to
44
43
to
36
Symbol Type
Description
VDD
GND
AVDD
AGND
– Digital power supply (5V)
– Digital ground
– Analog power supply (5V)
– Analog ground
VRH
VDD1
VDD2
VDD3
C1
C2
OSC0
OSC1
– Analog reference voltage
– LCD drive bias output
– LCD drive bias output
– LCD drive bias output
– Capacitor connecting pins for LCD drive bias generation
–
I Oscillator input pin: connects to a crystal oscillator (or ceramic
resonator) or external clock.
O Oscillator output pin: connects to a crystal oscillator (or ceramic
resonator). When an external clock is input to OSC0, leave OSC1
open.
XT
I XT-side oscillator input pin: connects a crystal oscillator of
32.768kHz or 75kHz.
XT
O XT-side oscillator output pin: connects a crystal oscillator of
32.768kHz or 75kHz.
RESET
I System reset input: when this pin goes low, the internal state of
the chip is initialized and program execution restarts from address
0040H. The input is pulled up to VDD with an internal pull-up
resistor.
P0.0 I/O 8-bit input-output port (port 0): input or output can be selected for
to
each bit by the port 0 direction register (P0DIR). In addition to their
P0.7
input-output port functions, the pins of port 0 have secondary
functions: see Secondary Function.
P1.0 I/O 8-bit input-output port (port 1): input or output can be selected for
to
each bit by the port 1 direction register (P1DIR). In addition to their
P1.7
input or output port functions, the pins of port 1 have secondary
functions: see Secondary Function.
P2.0 I/O 5-bit input-output port (port 2): input or output can be selected for
to
each bit by the port 2 direction register (P2DIR). In addition to their
P2.4
input or output port functions, P2.0 and P2.1 have secondary
functions: see Secondary Function.
P3.0
I 8-bit input port (port3): during A/D conversion, the pins of port 3
to
function as analog input channels.
P3.7
P4.0 I/O 8-bit input-output port (port 4).
to
P4.7
P5.0 I/O 8-bit input-output port (port 5): input or output can be selected for
to
each bit by the port 5 direction register (P5DIR).
P5.7
5/18
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