參數(shù)資料
型號(hào)： M80C186EB-13
廠商： Intel Corp.
英文描述： 16-Bit High-Integration Embedded Processor(16位高集成嵌入式處理器)
中文描述： 16位高性能嵌入式處理器集成（16位高集成嵌入式處理器）
文件頁(yè)數(shù)： 33/56頁(yè)
文件大?。?/td> 855K
代理商： M80C186EB-13
M80C186EB
RESET
The M80C186EB will perform a reset operation any
time the RESIN pin active. The RESIN pin is actually
synchronized before it is presented internally, which
means that the clock must be operating before a
reset can take effect. From a power-on state, RESIN
must be held active (low) in order to guarantee cor-
rect initialization of the M80C186EB.
Failure to pro-
vide RESIN while the device is powering up will
result in unspecified operation of the device.
Figure 17 shows the correct reset sequence when
first applying power to the M80C186EB. An external
clock connected to CLKIN must not exceed the V
CC
threshold being applied to the M80C186EB. This is
normally not a problem if the clock driver is supplied
with the same V
CC
that supplies the M80C186EB.
When attaching a crystal to the device, RESIN must
remain active until both V
CC
and CLKOUT are stable
(the length of time is application specific and de-
pends on the startup characteristics of the crystal
circuit). The RESIN pin is designed to operate cor-
rectly using an RC reset circuit, but the designer
must ensure that the ramp time for V
CC
is not so
long that RESIN is never really sampled at a logic
low level when V
CC
reaches minimum operating
conditions.
Figure 18 shows the timing sequence when RESIN
is applied after V
CC
is stable and the device has
been operating. Note that a reset will terminate all
activity and return the M80C186EB to a known oper-
ating state. Any bus operation that is in progress at
the time RESIN is asserted will terminate immediate-
ly (note that most control signals will be driven to
their inactive state first before floating).
While RESIN is active, bus signals LOCK, A19/
ONCE, and A18:16 are configured as inputs and
weakly held high by internal pullup transistors. Only
19/ONCE can be overdriven to a low and is used to
enable ONCE Mode. Forcing LOCK or A18:16 low at
any time while RESIN is low is prohibited and will
cause unspecified device operation.
33
相關(guān)PDF資料
PDF描述
M80C186EB-16 16-Bit High-Integration Embedded Processor(16位高集成嵌入式處理器)
M80C186EB-8 16-Bit High-Integration Embedded Processor(16位高集成嵌入式處理器)
M80C186 CHMOS HIGH INTEGRATION 16-BIT MICROPROCESSOR
M80C186XL10 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
M80C186XL12 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M80C186EB-16 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
M80C186EB-8 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
M80C186XL10 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
M80C186XL12 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
M80C186XL16 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSOR
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