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73S1210F-44IM/F 参数 Datasheet PDF下载

73S1210F-44IM/F图片预览
型号: 73S1210F-44IM/F
PDF下载: 下载PDF文件 查看货源
内容描述: 自包含智能卡读卡器与密码键盘和电源管理 [Self-Contained Smart Card Reader with PINpad and Power Management]
分类和应用: 微控制器和处理器外围集成电路uCs集成电路uPs集成电路
文件页数/大小: 126 页 / 1200 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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DS_1210F_001  
73S1210F Data Sheet  
Keypad Column LS Scan Order Register (KORDERL): 0xD6 0x00  
In the KORDERL and KORDERH registers, Column Scan Order(14:0) is grouped into 5 sets of 3 bits  
each. Each set determines which column (COL(4:0) pin) to activate by loading the column number into  
the 3 bits. When in HW_Scan_Enable mode, the hardware will step through the sets from 1Col to 5Col  
(up to the number of columns in Colsize) and scan the column defined in the 3 bits. To scan in sequential  
order, set a counting pattern with 0 in set 0, and 1 in set 1,and 2 in set 2, and 3 in set 3, and 4 in set 4.  
The firmware should update this as part of the interrupt service routine so that the new scan order is  
loaded prior to the next key being pressed. For example, to scan COL(0) first, 1Col(2:0) should be  
loaded with 000’b. To scan COL(4) fifth, 5Col(2:0) should be loaded with 100’b.  
Table 69: The KORDERL Register  
MSB  
LSB  
3COL.1 3COL.0 2COL.2 2COL.1 2COL.0 1COL.2 1COL.1 1COL.0  
Bit  
Symbol  
3COL.1  
3COL.0  
2COL.2  
2COL.1  
2COL.0  
1COL.2  
1COL.1  
1COL.0  
Function  
KORDERL.7  
KORDERL.6  
KORDERL.5  
KORDERL.4  
KORDERL.3  
KORDERL.2  
KORDERL.1  
KORDERL.0  
Column to scan 3rd (lsb’s).  
Column to scan 2nd.  
Column to scan 1st.  
Keypad Column MS Scan Order Register (KORDERH): 0xD7 0x00  
Table 70: The KORDERH Register  
MSB  
LSB  
5COL.2 5COL.1 5COL.0 4COL.2 4COL.1 4COL.0 3COL.2  
Bit  
Symbol  
Function  
KORDERH.7  
KORDERH.6  
KORDERH.5  
KORDERH.4  
KORDERH.3  
KORDERH.2  
KORDERH.1  
KORDERH.0  
5COL.2  
5COL.1  
5COL.0  
4COL.2  
4COL.1  
4COL.0  
3COL.2  
Column to scan 5th.  
Column to scan 4th.  
Column to scan 3rd (msb).  
Rev. 1.4  
67