参数资料
型号: AT89C51SND2C-7FTUL
厂商: Atmel
文件页数: 157/160页
文件大小: 0K
描述: IC 8051 MCU FLASH 64K MP3 100BGA
标准包装: 260
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,IDE/ATAPI,MMC,SPI,UART/USART,USB
外围设备: 音频,I²S,MP3,PCM,POR,WDT
输入/输出数: 32
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
RAM 容量: 2.25K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.3 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-TFBGA
包装: 托盘
其它名称: AT89C51SND2C7FTUL
6
4341H–MP3–10/07
AT8xC51SND2C/MP3B
4.3
Signals
All the AT8xC51SND2C and AT8XSND2CMP3B signals are detailed by functionality in Table 4-
1 to Table 14.
Table 4-1.
Ports Signal Description
Table 4-2.
Clock Signal Description
Table 4-3.
Timer 0 and Timer 1 Signal Description
Signal
Name
Type
Description
Alternate
Function
P0.7:0
I/O
Port 0
P0 is an 8-bit open-drain bidirectional I/O port. Port 0 pins that have 1s written
to them float and can be used as high impedance inputs. To avoid any parasitic
current consumption, floating P0 inputs must be polarized to V
DD or VSS.
AD7:0
P2.7:0
I/O
Port 2
P2 is an 8-bit bidirectional I/O port with internal pull-ups.
A15:8
P3.7:0
I/O
Port 3
P3 is an 8-bit bidirectional I/O port with internal pull-ups.
RXD
TXD
INT0
INT1
T0
T1
WR
RD
P4.3:0
I/O
Port 4
P4 is an 8-bit bidirectional I/O port with internal pull-ups.
MISO
MOSI
SCK
SS
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.
-
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
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