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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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73S1210F Data Sheet  
DS_1210F_001  
VCC Stable Timer Register (VccTmr): 0xFE04 0x0F  
A programmable timer is provided to set the time from activation start (setting the VCCSEL.1 and  
VCCSEL.0 bits to non-zero) to when VCC_OK is evaluated. VCC_OK must be true at the end of this  
timers programmed interval (tto in Figure 16) in order for the activation sequence to continue. If VCC_OK  
is not true and the end of the interval (tto), the Card Event interrupt will be set, and a deactivation  
sequence shall begin including clearing of the VCCSEL bits.  
Table 76: The VccTmr Register  
MSB  
LSB  
OFFTMR.3 OFFTMR.2 OFFTMR.1 OFFTMR.0 VCCTMR.3 VCCTMR.2 VCCTMR.1 VCCTMR.0  
Bit  
Symbol  
Function  
VccTmr.7 OFFTMR.3 VCC Off Timer - The bits set the delay (in number of ETUs) for  
deactivation after the VCCSEL.1 and VCC SEL.0 have been set  
to 0. The time value is a count of the 32768Hz clock and is given  
by tto = OFFTMR(7:4) * 30.5µs. This delay does not affect  
emergency deactivations due to VDD Fault or card events. A  
VccTmr.6 OFFTMR.2  
VccTmr.5 OFFTMR.1  
VccTmr.4 OFFTMR.0  
value of 0000 results in no additional delay.  
VccTmr.3 VCCTMR.3 VCC Timer - VCCOK must be true at the time set by the value in  
these bits in order for the activation sequence to continue. If not,  
the VCCSEL bits will be cleared. The time value is a count of the  
32768Hz clock and is given by tto = VCCTMR(3:0) * 30.5µs. A  
value of 0000 results in no timeout, not zero time, and activation  
requires that RDYST is set and RDY goes high.  
VccTmr.2 VCCTMR.2  
VccTmr.1 VCCTMR.1  
VccTmr.0 VCCTMR.0  
84  
Rev. 1.4