BP87C51FB

更新时间： 2024-02-22 00:26:50

品牌	Logo	应用领域
英特尔 - INTEL		微控制器和处理器外围集成电路光电二极管可编程只读存储器时钟
页数	文件大小	规格书
18页	280K
描述
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

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技术参数
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BP87C51FB 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	PLASTIC, DIP-40	针数：	40
Reach Compliance Code：	compliant	HTS代码：	8542.31.00.01
风险等级：	5.8	Is Samacsys：	N
具有ADC：	NO	地址总线宽度：	16
位大小：	8	CPU系列：	8051
最大时钟频率：	12 MHz	DAC 通道：	NO
DMA 通道：	NO	外部数据总线宽度：	8
JESD-30 代码：	R-PDIP-T40	长度：	52.26 mm
I/O 线路数量：	32	端子数量：	40
最高工作温度：	125 °C	最低工作温度：	-40 °C
PWM 通道：	YES	封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP40,.6
封装形状：	RECTANGULAR	封装形式：	IN-LINE
电源：	5 V	认证状态：	Not Qualified
RAM（字节）：	256	ROM（单词）：	32768
ROM可编程性：	OTPROM	座面最大高度：	5.08 mm
速度：	12 MHz	子类别：	Microcontrollers
最大压摆率：	30 mA	最大供电电压：	6 V
最小供电电压：	4 V	标称供电电压：	5 V
表面贴装：	NO	技术：	CMOS
温度等级：	AUTOMOTIVE	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	15.24 mm	uPs/uCs/外围集成电路类型：	MICROCONTROLLER
Base Number Matches：	1

BP87C51FB 数据手册

AUTOMOTIVE 87C51FA/FB/FC/FC-20

To drive the device from an external clock source,

XTAL1 should be driven, while XTAL2 floats, as

shown in Figure 5. There are no requirements on the

duty cycle of the external clock signal, since the in-

put to the internal clocking circuitry is through a di-

vide-by-two flip-flop, but minimum and maximum

high and low times specified on the data sheet must

be observed.

IDLE MODE

The user’s software can invoke the Idle Mode. When

the microcontroller is in this mode, power consump-

tion is reduced. The Special Function Registers and

the onboard RAM retain their values during Idle, but

the processor stops executing instructions. Idle

Mode will be exited if the chip is reset or if an en-

abled interrupt occurs. The PCA timer/counter can

optionally be left running or paused during Idle

Mode.

An external oscillator may encounter as much as

100 pF load at XTAL1 when it starts up. This is due

to interaction between the amplifier and its feedback

capacitance. Once the external signal meets V and

specifications the capacitance will not exceed

20 pF.

POWER DOWN MODE

To save even more power, a Power Down mode can

be invoked by software. In this mode, the oscillator

is stopped and the instruction that invoked Power

Down is the last instruction executed. The on-chip

RAM and Special Function Registers retain their val-

ues until the Power Down mode is terminated.

On the 87C51FA/FB/FC either a hardware reset or

external interrupt can cause an exit from Power

Down. Reset redefines all the SFRs but does not

change the on-chip RAM. An external interrupt al-

lows both the SFRs and the on-chip RAM to retain

their values.

270961–5

30 pF 10 pF for Crystals

C1, C2

For Ceramic Resonators, contact resonator manufac-

turer.

To properly terminate Power Down the reset or ex-

ternal interrupt should not be executed before V is

Figure 4. Oscillator Connections

restored to its normal operating level and must be

held active long enough for the oscillator to restart

and stabilize (normally less than 10 ms).

With an external interrupt. INT0 or INT1 must be en-

abled and configured as level-sensitive. Holding the

pin low restarts the oscillator (the oscillator must be

allowed time to stabilize after start up, before this pin

is released high) but bringing the pin back high com-

pletes the exit. Once the interrupt is serviced, the

next instruction to be executed after RETI will be the

one following the instruction that put the device into

Power Down.

270961–6

Figure 5. External Clock Drive Configuration

1...3 4 567 8 9...18

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与BP87C51FB相关器件

型号	品牌	描述	获取价格	数据表
BP87C51FB-1	INTEL	Microcontroller, 8-Bit, UVPROM, 8051 CPU, 16MHz, CMOS, PDIP40	获取价格
BP87C51FB12	INTEL	Microcontroller, 8-Bit, OTPROM, 12MHz, CMOS, PDIP40, PLASTIC, DIP-40	获取价格
BP87C51FB16	INTEL	Microcontroller, 8-Bit, OTPROM, 16MHz, CMOS, PDIP40, PLASTIC, DIP-40	获取价格
BP87C51FB-2	INTEL	Microcontroller, 8-Bit, UVPROM, 8051 CPU, 12MHz, CMOS, PDIP40	获取价格
BP87C51FB20	INTEL	Microcontroller, 8-Bit, OTPROM, 20MHz, CMOS, PDIP40, PLASTIC, DIP-40	获取价格
BP87C51FC	INTEL	CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER	获取价格

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