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73S1217F-IMR/F 参数 Datasheet PDF下载

73S1217F-IMR/F图片预览
型号: 73S1217F-IMR/F
PDF下载: 下载PDF文件 查看货源
内容描述: 总线供电80515的系统级芯片, USB , ISO 7816 / EMV ,密码键盘和更多 [Bus-Powered 80515 System-on-Chip with USB, ISO 7816 / EMV, PINpad and More]
分类和应用: 多功能外围设备微控制器和处理器时钟
文件页数/大小: 140 页 / 1066 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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DS_1217F_002  
73S1217F Data Sheet  
Keypad Scan Time Register (KSCAN): 0xD3 Å 0x00  
This register contains the values of scanning time and debouncing time.  
Table 71: The KSCAN Register  
MSB  
LSB  
DBTIME.5 DBTIME.4 DBTIME.3 DBTIME.2 DBTIME.1 DBTIME.0 SCTIME.1 SCTIME.0  
Bit  
Symbol  
Function  
KSCAN.7  
KSCAN.6  
KSCAN.5  
KSCAN.4  
KSCAN.3  
KSCAN.2  
KSCAN.1  
KSCAN.0  
DBTIME.5  
DBTIME.4  
DBTIME.3  
DBTIME.2  
DBTIME.1  
DBTIME.0  
SCTIME.1  
SCTIME.0  
De-bounce time in 4ms increments. 1 = 4ms de-bounce time, 0x3F =  
252ms, 0x00 = 256ms. Key presses and key releases are de-bounced by  
this amount of time.  
Scan time in ms. 01 = 1ms, 02 = 2ms, 00 = 3ms, 00 = 4ms. Time between  
checking each key during keypad scanning.  
Rev. 1.2  
71  
 
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