参数资料
型号: 73S1209F-68IM/F/P
厂商: Maxim Integrated Products
文件页数: 98/123页
文件大小: 0K
描述: IC SMART CARD READER PROG 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 260
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: 管件
73S1209F Data Sheet
DS_1209F_004
VCC
VCCOK
RSTCRD
RST
CLK
IO
t1
t2
t3
t4
tto
VCCSEL
bits
t1: The time from setting VCCSEL bits until VCCOK = 1.
tto: The time from setting VCCSEL bits until VCCTMR times out. At t1 (if RDYST = 1) or tto (if RDYST = 0),
activation starts. It is suggested to have RDYST = 0 and use the VCCTMR interrupt to let MPU know when
sequence is starting.
t2: time from start of activation (no external indication) until IO goes into reception mode (= 1).
This is
approximately 4 SCCLK (or SCECLK) clock cycles.
t3: minimum one half of ETU period.
t4: ETU period.
Note that in Sync mode, IO as input is sampled on the rising edge of CLK. IO changes on the falling edge of CLK,
either from the card or from the 73S1209F. The RST signal to the card is directly controlled by the RSTCRD bit
(non-inverted) via the MPU and is shown as an example of a possible RST pattern.
Figure 19: Synchronous Activation
IO reception on
RST
CLK
CLKOFF
CLKLVL
Rlength Interrupt
RLength Count
RLenght = 1
TX/RXB Mode bit
(TX = '1')
1. Clear CLKOFF after Card is in reception mode.
2. Set RST bit.
3. Interrupt is generated when Rlength counter is MAX.
4. Read and clear Interrupt.
5. Clear RST bit.
6. Toggle TX/RXB to reset bit counter.
7. Reload RLength Counter.
Count MAX
1
2
4
7
5
t1. CLK wll start at least 1/2 ETU after CLKOFF is set low
when CLKLVL = 0
t1
3
6
Figure 20: Example of Sync Mode Operation: Generating/Reading ATR Signals
76
Rev. 1.2
相关PDF资料
PDF描述
73S1209F-44IMR/F/P IC SMART CARD READER PROG 44-QFN
73S1209F-44IM/F/P IC SMART CARD READER PROG 44-QFN
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