参数资料
型号: 73S8024RN-DB
厂商: Maxim Integrated Products
文件页数: 4/27页
文件大小: 0K
描述: BOARD DEMO 73S8024RN 28-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
系列: *
73S8024RN Data Sheet
DS_8024RN_020
12
Rev. 2
8 Deactivation Sequence
Deactivation is initiated either by the system controller by setting the CMDVCC high, or automatically in
the event of hardware faults. Hardware faults are over-current, overheating, VDD fault, VPC fault, VCC fault,
and card extraction during the session. To be noted that VPC and VCC faults are linked together so that a
fault is generated when VPC goes lower than VCC.
The following steps show the deactivation sequence and the timing of the card control signals when the
system controller sets the CMDVCC high or OFF goes low due to a fault or card removal:
RST goes low at the end of t1.
CLK is set low at the end of t2.
I/O goes low at the end of t3. Out of reception mode.
VCC is shut down at the end of time t4. After a delay t5 (discharge of the VCC capacitor), VCC is low.
RST
CLK
I/O
VCC
t1
t2
t3
t4
t5
CMDVCC
-- OR --
OFF
t1 = > 0.5s, timing by 1.5MHz internal Oscillator
t2 = > 7.5s
t3 = > 0.5s
t4 = > 0.5s
t5 = depends on VCC filter capacitor.
For NDS application, CF=1F makes t1 + t2 + t3 + t4 + t5 < 100s
Figure 4: Deactivation Sequence
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