參數(shù)資料
型號： ST52430K3
英文描述： MAX 7000 CPLD 64 MC 84-PLCC
中文描述： 8位三個定時器/脈寬調(diào)制重癥監(jiān)護病房。 ADC的。脊髓損傷。水分散粒劑。提供了8K存儲器
文件頁數(shù)： 19/88頁
文件大小： 1162K
代理商： ST52430K3
ST52T430/E430
3.1.4 EPROM Read/Verify Margin Mode.
The read phase is executed with VPP= 5V±5%,
instead of the verify phase that needs VPP=
12V
±5%.
The Memory Verify operation is available in order
to verify the accuracy of the data written. A
Memory Verify Margin Mode operation can be
executed immediately after writing each byte, in
this case (see Figure ):
1) a positive pulse on RST_CONF signal resets the
EPROM Control Register, if it wasn’t already reset;
2) one positive pulse on INC_CONF loads the
Memory Read/Verify operation code;
3) a negative pulse (100 ns) on the PHASE signal
validates the Memory Reading / Verify operation;
4) a negative pulse on RST_CONF signal puts in
the PA(0:7) port the value stored in the actual
memory address and resets the EPROM Control
Register;
If an error occurred writing, the user has to repeat
EPROM writing.
3.1.5 Stand by Mode.
EPROM has a standby mode, which reduces the
active current from 10mA (Programming mode) to
less than 100
A. Memory is placed in standby
mode by setting the PHASE signal at a high level
or when the EPROM Control Register value is 0
and the PHASE signal is low.
3.1.6 ID code.
A software identification code, called ID code may
be written in order to distinguish which software
version is stored in the memory.
64 Bytes are dedicated to store this code by using
the address values from 0 to 63.
The ID Code may be read or verified even if the
Memory Lock Status is “0".
The timing signals are the same as that of a normal
operation.
3.2 Eprom Erasure
The
transparent
window
available
in
the
CSDIP32W package, allows the memory contents
to be erased by exposure to UV light.
Erasure begins when the device is exposed to light
with a wavelength shorter than 4000. Sunlight, as
well as some types of artificial light, includes
wavelengths in the 3000-4000 range which, on
prolonged exposure can cause erasure of memory
contents. Therefore, it is recommended that
EPROM devices be fitted with an opaque label
over the window area in order to prevent
unintentional erasure.
The erasure procedure recommended for EPROM
devices consists of exposure to short wave UV
light having a wavelength of 2537. The minimum
integrated dose recommended (intensity x expo-
sure time) for complete erasure is 15Wsec/cm 2.
This is equivalent to an erasure time of 15-20
minutes using a UV source having an intensity of
12mW/cm 2 at a distance of 25mm (1 inch) from
the device window.
相關(guān)PDF資料
PDF描述
ST52440F2 MAX 7000 CPLD 64 MC 100-TQFP
ST52440F3 MAX 7000 CPLD 64 MC 44-TQFP
ST52440G2 MAX 7000 CPLD 64 MC 44-TQFP
ST52440G3 MAX 7000 CPLD 64 MC 44-TQFP
ST52501LF1 MAX 7000 CPLD 128 MC 84-PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST52440F2 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM
ST52440F3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM
ST52440G2 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM
ST52440G3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT ICU WITH TIMER/PWM. ANALOG COMPARATOR. TRIAC/PWM TIMER. WDG. UP TO 8K EPROM
ST5-24B19 功能描述:電源變壓器 SPLIT BOBBIN HORZ MOUNT XFMR RoHS:否 制造商:Triad Magnetics 功率額定值:12 VA 初級電壓額定值:115 V / 230 V 次級電壓額定值:12 V / 24 V 安裝風(fēng)格:SMD/SMT 一次繞組:Dual Primary Winding 二次繞組:Dual Secondary Winding 長度:2.5 in 寬度:2 in 高度:1.062 in
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