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TSC87251G2D-24IC 参数 Datasheet PDF下载

TSC87251G2D-24IC图片预览
型号: TSC87251G2D-24IC
PDF下载: 下载PDF文件 查看货源
内容描述: 8位/ 16位微控制器,串行通信接口 [8/16-bit Microcontroller with Serial Communication Interfaces]
分类和应用: 微控制器通信
文件页数/大小: 63 页 / 813 K
品牌: TEMIC [ TEMIC SEMICONDUCTORS ]
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TSC80251G2D  
Signal  
Name  
Alternate  
Function  
Type  
Description  
VSS  
GND  
GND  
Circuit Ground  
Connect this pin to ground.  
VSS1  
Secondary Ground 1  
This ground is provided to reduce ground bounce and improve power supply bypassing.  
Connection of this pin to ground is recommended. However, when using the TSC80251G2D  
as a pin-for-pin replacement for a 8xC51 product, VSS1 can be unconnected without loss of  
compatibility.  
Not available on DIP package.  
VSS2  
GND  
Secondary Ground 2  
This ground is provided to reduce ground bounce and improve power supply bypassing.  
Connection of this pin to ground is recommended. However, when using the TSC80251G2D  
as a pin-for-pin replacement for a 8xC51 product, VSS2 can be unconnected without loss of  
compatibility.  
Not available on DIP package.  
WAIT#  
WCLK  
I
Real-time Synchronous Wait States Input  
P1.6  
The real-time WAIT# input is enabled by setting RTWE bit in WCON (S:A7h). During bus  
cycles, the external memory system can signal ‘system ready’ to the microcontroller in real  
time by controlling the WAIT# input signal.  
O
Wait Clock Output  
P1.7  
P3.6  
The real-time WCLK output is enabled by setting RTWCE bit in WCON (S:A7h). When  
enabled, the WCLK output produces a square wave signal with a period of one half the  
oscillator frequency.  
WR#  
O
I
Write  
Write signal output to external memory.  
XTAL1  
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. XTAL1 is the clock source for internal  
timing.  
XTAL2  
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 XTAL2 unconnected.  
Note:  
1. The description of A15:8/P2.7:0 and AD7:0/P0.7:0 are for the Non-Page mode chip configuration. If the chip is configured in Page mode  
operation, port 0 carries the lower address bits (A7:0) while port 2 carries the upper address bits (A15:8) and the data (D7:0).  
8
Rev. A - May 7, 1999