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参数资料
| 型号： | S80C188EB-13 |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, 13 MHz, MICROPROCESSOR, PQFP80 |
| 封装： | EIAJ, QFP-80 |
| 文件页数： | 37/59页 |
| 文件大小： | 1928K |
| 代理商： | S80C188EB-13 |
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80C186EB80C188EB 80L186EB80L188EB
RESET
The processor 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 processor Failure to pro-
vide RESIN while the device is powering up will
result in unspecified operation of the device
Figure 14 shows the correct reset sequence when
first applying power to the processor An external
clock connected to CLKIN must not exceed the VCC
threshold being applied to the processor This is nor-
mally not a problem if the clock driver is supplied
with the same VCC that supplies the processor
When attaching a crystal to the device RESIN must
remain active until both VCC 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 VCC is not so
long that RESIN is never really sampled at a logic
low level when VCC reaches minimum operating
conditions
Figure 16 shows the timing sequence when RESIN
is applied after VCC is stable and the device has
been operating Note that a reset will terminate all
activity and return the processor to a known operat-
ing state Any bus operation that is in progress at the
time RESIN is asserted will terminate immediately
(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 A1816 are configured as inputs and
weakly held high by internal pullup transistors Only
19ONCE can be overdriven to a low and is used to
enable ONCE Mode Forcing LOCK or A1816 low at
any time while RESIN is low is prohibited and will
cause unspecified device operation
42
相关PDF资料 |
PDF描述 |
|---|---|
| S80C188EB-20 | 16-BIT, 20 MHz, MICROPROCESSOR, PQFP80 |
| SB80C188EB-20 | 16-BIT, 20 MHz, MICROPROCESSOR, PQFP80 |
| SB80C188EB-25 | 16-BIT, 25 MHz, MICROPROCESSOR, PQFP80 |
| S80L186EB-13 | 16-BIT, 13 MHz, MICROPROCESSOR, PQFP80 |
| SB80L188EB-13 | 16-BIT, 13 MHz, MICROPROCESSOR, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| S80C188EB20 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
| S80C188EB25 | 功能描述:IC MPU 16-BIT 5V 25MHZ 80-MQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:- 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘 |
| S80C188EB-25 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:16-Bit Microprocessor |
| S80C188EC13 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS |
| S80C188EC-13 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:16-Bit Microprocessor |
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