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89C1051U 参数 Datasheet PDF下载

89C1051U图片预览
型号: 89C1051U
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器,带有1K字节闪存 [8-Bit Microcontroller with 1K Bytes Flash]
分类和应用: 闪存微控制器
文件页数/大小: 14 页 / 204 K
品牌: ATMEL [ ATMEL ]
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AT89C1051U  
Serial Port Timing: Shift Register Mode Test Conditions  
(VCC = 5.0V ± 20%; Load Capacitance = 80 pF)  
12 MHz Osc  
Variable Oscillator  
Symbol  
tXLXL  
Parameter  
Min  
1.0  
700  
50  
Max  
Min  
12tCLCL  
10tCLCL-133  
2tCLCL-117  
0
Max  
Units  
µs  
Serial Port Clock Cycle Time  
tQVXH  
tXHQX  
tXHDX  
tXHDV  
Output Data Setup to Clock Rising Edge  
Output Data Hold After Clock Rising Edge  
Input Data Hold After Clock Rising Edge  
Clock Rising Edge to Input Data Valid  
ns  
ns  
0
ns  
700  
10tCLCL-133  
ns  
Shift Register Mode Timing Waveforms  
AC Testing Input/Output Waveforms(1)  
Float Waveforms(1)  
Note:  
1. AC Inputs during testing are driven at VCC - 0.5V for  
a logic 1 and 0.45V for a logic 0. Timing measure-  
ments are made at VIH min. for a logic 1 and VIL  
max. for a logic 0.  
Note:  
1. For timing purposes, a port pin is no longer float-  
ing when a 100 mV change from load voltage  
occurs. A port pin begins to float when 100 mV  
change from the loaded VOH/VOL level occurs.  
11