參數(shù)資料
型號(hào)： P87C591
廠商： NXP Semiconductors N.V.
英文描述： Single-chip 8-bit microcontroller with CAN controller
中文描述： 單芯片8 - CAN控制器位微控制器
文件頁(yè)數(shù)： 83/161頁(yè)
文件大?。?/td> 588K
代理商： P87C591
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1999 Aug 19
83
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
15.2.12.1 ENS1, the SIO1 enable bit
ENS1 = “0”: When ENS1 is “0”, the SDA and SCL input
signals are ignored, SIO1 is in the not addressed slave
state, and the STO bit in S1CON is forced to 0. No other
bits are affected.
ENS1 = “1”: When ENS1 is 1, I
2
C is enabled. Note, that
P1.6 and P1.7 have to set to Open Drain by writing the Port
mode registers P1M1.x and P1M2.x bits 6 and 7 with a 1
(see Section 6.2 “Pin description”).
ENS1 should not be used to temporarily release SIO1 from
the I
2
C bus since, when ENS1 is reset, the I
2
C bus status
is lost. The AA flag should be used instead (see
description of the AA flag in the following text).
In the following text, it is assumed that ENS1 = 1.
15.2.12.2 STA, the START flag
STA = “1”: When the STA bit is set to enter a master mode,
the SIO1 hardware checks the status of the I
2
C bus and
generates a START condition if the bus is free. If the bus
is not free, then SIO1 waits for a STOP condition (which
will free the bus) and generates a START condition after a
delay of a half clock period of the internal serial clock
generator.
If STA is set while SIO1 is already in a master mode and
one or more bytes are transmitted or received, SIO1
transmits a repeated START condition. STA may be set at
any time. STA may also be set when SIO1 is an addressed
slave.
STA = “0”: When the STA bit is reset, no START condition
or repeated START condition will be generated.
15.2.12.3 STO, the STOP Flag
STO = “1”: When the STO bit is set while SIO1 is in a
master mode, a STOP condition is transmitted to the I
2
C
bus. When the STOP condition is detected on the bus, the
SIO1 hardware clears the STO flag. In a slave mode, the
STO flag may be set to recover from an error condition. In
this case, no STOP condition is transmitted to the I
2
C bus.
However, the SIO1 hardware behaves as if a STOP
condition has been received and switches to the defined
not addressed slave receiver mode. The STO flag is
automatically cleared by hardware.
If the STA and STO bits are both set, the a STOP condition
is transmitted to the I
2
C bus if SIO1 is in a master mode (in
a slave mode, SIO1 generates an internal STOP condition
which is not transmitted). SIO1 then transmits a START
condition.
STO = “0”: When the STO bit is reset, no STOP condition
will be generated.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P87C591VFA/00,512 功能描述:8位微控制器 -MCU 80C51 16K OTP/CAN RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
P87C654X2BBD,157 功能描述:8位微控制器 -MCU 16K/256 OTP 12/6 CLK I2C LQFP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
P87C654X2FA 制造商:NXP Semiconductors 功能描述:P87C654X2FA 8bit microcontroller,33MHz
P87C654X2FA,529 功能描述:8位微控制器 -MCU 16K/256 OTP 12/6 CLK RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
P87C654X2FA-S 功能描述:8位微控制器 -MCU 16K/256 OTP 12/6 CLK I2C PLCC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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