參數(shù)資料
型號(hào)： DOC4106
廠商： Atmel Corp.
英文描述： Single-Chip Microcontroller with MP3 Decoder and Man-Machine Interface
中文描述： 單片微控制器，帶有MP3解碼器和人機(jī)界面
文件頁(yè)數(shù)： 5/47頁(yè)
文件大?。?/td> 791K
代理商： DOC4106
5
AT8xC51SND1C
4106F–8051–10/02
P2.7:0
I/O
Port 2
P2 is an 8-bit bi-directional I/O port with internal pull-ups.
A15:8
P3.7:0
I/O
Port 3
P3 is an 8-bit bi-directional I/O port with internal pull-ups.
RXD
TXD
INT0
INT1
T0
T1
WR
RD
P4.7:0
I/O
Port 4
P4 is an 8-bit bi-directional I/O port with internal pull-ups.
MISO
MOSI
SCK
SS
P5.3:0
I/O
Port 5
P5 is a 4-bit bi-directional I/O port with internal pull-ups.
-
Table 2.
Clock Signal Description
Signal
Name
Type
Description
Alternate
Function
X1
I
Input to the on-chip inverting oscillator amplifier
To use the internal oscillator, a crystal/resonator circuit is connected to
this pin. If an external oscillator is used, its output is connected to this
pin. X1 is the clock source for internal timing.
-
X2
O
Output of the on-chip inverting oscillator amplifier
To use the internal oscillator, a crystal/resonator circuit is connected to
this pin. If an external oscillator is used, leave X2 unconnected.
-
FILT
I
PLL low pass filter input
FILT receives the RC network of the PLL low pass filter.
-
Table 3.
Timer 0 and Timer 1 Signal Description
Signal
Name
Type
Description
Alternate
Function
INT0
I
Timer 0 Gate Input
INT0 serves as external run control for timer 0, when selected by
GATE0 bit in TCON register.
External Interrupt 0
INT0 input sets IE0 in the TCON register. If bit IT0 in this register is set,
bit IE0 is set by a falling edge on INT0. If bit IT0 is cleared, bit IE0 is set
by a low level on INT0.
P3.2
INT1
I
Timer 1 Gate Input
INT1 serves as external run control for timer 1, when selected by
GATE1 bit in TCON register.
External Interrupt 1
INT1 input sets IE1 in the TCON register. If bit IT1 in this register is set,
bit IE1 is set by a falling edge on INT1. If bit IT1 is cleared, bit IE1 is set
by a low level on INT1.
P3.3
Table 1.
Ports Signal Description (Continued)
Signal
Name
Type
Description
Alternate
Function
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