参数资料
型号: 73S1215F-44IM/F
厂商: Maxim Integrated Products
文件页数: 114/136页
文件大小: 0K
描述: IC SMART CARD READER 44-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,USB
外围设备: LED,POR,WDT
输入/输出数: 9
程序存储器容量: 64KB(64K 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: 44-VFQFN 裸露焊盘
包装: 管件
DS_1215F_003
73S1215F Data Sheet
Rev. 1.4
79
Smart card RST, I/O and CLK, C4, C8 shall be low before the end of the deactivation sequence. Figure
18 shows the timing for a deactivation sequence.
VCCSEL
bits
VCC
VCCOK bit
RSTCRD bit
RST
CLK
IO
t1
t2
t3
t4
t5
tto
See Note
ATR starts
t4
SELSC
bits
t1: SELSC.1 bit set (selects internal ICC interface) and a non-zero value in VCCSEL bits (calling for a
value of Vcc of 1.8, 3.0, or 5.0 volts) will begin the activation sequence. t1 is the time for Vcc to rise to
acceptable level, declared as Vcc OK (bit VCCOK gets set). This time depends on filter capacitor
value and card Icc load.
tto: The time allowed for Vcc to rise to Vcc OK status after setting of the VCCSEL bits. This time is
generated by the VCCTMR counter. If Vcc OK is not set, (bit VCCOK) at this time, a deactivation will
be initiated. VCCSEL bits are not automatically cleared. The firmware must clear the VCCSEL bits
before starting a new activation.
t2: Time from VCCTMR timeout and VCC OK to IO reception (high), typically 2-3 CLK cycles if
RDYST = 0. If RDYST = 1, t2 starts when VCCOK = 1.
t3: Time from IO = high to CLK start, typically 2-3 CLK cycles.
t4: Time allowed for start of CLK to de-assertion of RST. Programmable by RLength register.
t5: Time allowed for ATR timeout, set by the STSTO register.
Note: If the RSTCRD bit is set, RST is asserted (low). Upon clearing RSTCRD bit, RST will be
de-asserted after t4.
Figure 17: Asynchronous Activation Sequence Timing
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