参数资料
型号: 73S1209F-68IMR/F
厂商: Maxim Integrated Products
文件页数: 85/123页
文件大小: 0K
描述: IC SMART CARD READER 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: 73S12xx
核心处理器: 80515
芯体尺寸: 8-位
速度: 24MHz
连通性: I²C,智能卡,UART/USART
外围设备: LED,POR,WDT
输入/输出数: 9
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 68-VFQFN 裸露焊盘
包装: 带卷 (TR)
73S1209F Data Sheet
DS_1209F_004
Keypad Column Register (KCOL): 0xD1
0x1F
This register contains the value of the column of a key detected as valid by the hardware. In bypass
mode, this register firmware writes directly this register to carry out manual scanning.
Table 65: The KCOL Register
MSB
LSB
COL.4
COL.3
COL.2
COL.1
COL.0
Bit
Symbol
Function
KCOL.7
KCOL.6
KCOL.5
KCOL.4
COL.4
Drive lines bit mapped to corresponding with pins COL(4:0). When a key
is detected, firmware reads this register to determine column. In bypass
(S/W keyscan) mode, Firmware writes this register directly. 0x1E =
COL(0) low, all others high. 0x0F = COL(4) low, all others high. 0x1F =
COL(4:0) all high.
KCOL.3
COL.3
KCOL.2
COL.2
KCOL.1
COL.1
KCOL.0
COL.0
Keypad Row Register (KROW): 0xD2
0x3F
This register contains the value of the row of a key detected as valid by the hardware. In bypass mode,
this register firmware reads directly this register to carry out manual detection.
Table 66: The KROW Register
MSB
LSB
ROW.5
ROW.4
ROW.3
ROW.2
ROW.1
ROW.0
Bit
Symbol
Function
KROW.7
KROW.6
KROW.5
ROW.6
Sense lines bit mapped to correspond with pins ROW(5:0). When key
detected, firmware reads this register to determine row. In bypass mode,
firmware reads rows and has to determine if there was a key press or not.
0x3E = ROW(0) low, all others high. 0x1F = ROW(5) low, all others high.
0x3F = ROW(5:0) all high.
KROW.4
ROW.4
KROW.3
ROW.3
KROW.2
ROW.2
KROW.1
ROW.1
KROW.0
ROW.0
64
Rev. 1.2
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