参数资料
型号: XR88C681P/40-F
厂商: Exar Corporation
文件页数: 19/101页
文件大小: 0K
描述: IC UART CMOS DUAL 40PDIP
标准包装: 9
特点: *
通道数: 2,DUART
FIFO's: 1 字节,3 字节
电源电压: 4.75 V ~ 5.25 V
带并行端口:
带CMOS:
安装类型: 通孔
封装/外壳: 40-DIP(0.600",15.24mm)
供应商设备封装: 40-PDIP
包装: 管件
其它名称: 1016-1640
XR88C681P/40-F-ND
XR88C681
24
Rev. 2.11
C.6.1.1 8051 Microcontroller
The 8051 family of microcontrollers is manufactured by Intel and comes with a variety of amenities. Some of these
amenities include:
D
On chip serial port
D
Four 8 bit I/O port (P0 - P3)
D
Two 16 bit timers
D
4k bytes of ROM
D
128 bytes of RAM
Figure 3 presents a block diagram of the 8051 microcontroller, and Figure 4 presents the pin out of this device.
Interrupt
Control
Other
Registers
128 bytes
RAM
(8032/8052)
128 bytes
RAM
ROM
0K - 8031/8032
4K - 8051
8K - 8052
Timer 2
(8032/8052)
Timer 1
Timer 0
CPU
Bus Control
I/O Ports
Serial Port
-RXD
-TXD
P 0
P1
P2
P3
Serial Port
Timer 0
Timer 1
Timer 2 (8032/8052)
-INT0
-INT1
Oscillator
-T2EX
-T2
-T1
-T0
-EA
RST
ALE
-PSEN
Figure 3. Block Diagram of the 8051 Microcontroller
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