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| 型號(hào)： | ST90R158M9LVT6 |
| 英文描述： | FUSE,5A,250V,5X20MM,FAST ACTING |
| 中文描述： | 16位產(chǎn)品微控制器（MCU），并配備16至64K的光盤(pán)。檢察官辦公室或EPROM。 512 2K的內(nèi)存- ST9家庭 |
| 文件頁(yè)數(shù)： | 90/199頁(yè) |
| 文件大小： | 2813K |
| 代理商： | ST90R158M9LVT6 |
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ST90158 - I/O PORTS
PORT CONTROL REGISTERS
(Cont’d)
During Reset, ports with weak pull-ups are set in
bidirectional/weak pull-up mode and the output
Data Register is set to FFh. This condition is also
held after Reset, except for Ports 0 and 1 in ROM-
less devices, and can be redefined under software
control.
Bidirectional ports without weak pull-ups are set in
high impedance during reset. To ensure proper
levels during reset, these ports must be externally
connected to either V
DD
or V
SS
through external
pull-up or pull-down resistors.
Other reset conditions may apply in specific ST9
devices.
8.4 INPUT/OUTPUT BIT CONFIGURATION
By programming the control bits PxC0.n and
PxC1.n (see
Figure 49
) it is possible to configure
bit Px.n as Input, Output, Bidirectional or Alternate
Function Output, where X is the number of the I/O
port, and n the bit within the port (n = 0 to 7).
When programmed as input, it is possible to select
the input level as TTL or CMOS compatible by pro-
gramming the relevant PxC2.n control bit, except
where the Schmitt trigger option is assigned to the
pin.
The output buffer can be programmed as push-
pull or open-drain.
A weak pull-up configuration can be used to avoid
external pull-ups when programmed as bidirec-
tional (except where the weak pull-up option has
been permanently disabled in the pin hardware as-
signment).
Each pin of an I/O port may assume software pro-
grammable Alternate Functions (refer to the de-
vice Pin Description and to Section 8.5 ALTER-
NATE FUNCTION ARCHITECTURE). To output
signals from the ST9 peripherals, the port must be
configured as AF OUT. On ST9 devices with A/D
Converter(s), configure the ports used for analog
inputs as AF IN.
The basic structure of the bit Px.n of a general pur-
pose port Px is shown in
Figure 50
.
Independently of the chosen configuration, when
the user addresses the port as the destination reg-
ister of an instruction, the port is written to and the
data is transferred from the internal Data Bus to
the Output Master Latches. When the port is ad-
dressed as the source register of an instruction,
the port is read and the data (stored in the Input
Latch) is transferred to the internal Data Bus.
When Px.n is programmed as an Input
:
(See
Figure 51
).
– The Output Buffer is forced tristate.
– The data present on the I/O pin is sampled into
the Input Latch at the beginning of each instruc-
tion execution.
– The data stored in the Output Master Latch is
copied into the Output Slave Latch at the end of
the execution of each instruction. Thus, if bit Px.n
is reconfigured as an Output or Bidirectional, the
data stored in the Output Slave Latch will be re-
flected on the I/O pin.
9
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PDF描述 |
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| ST90R158T6 | 8/16-BIT MICROCONTROLLER (MCU) WITH 16 TO 64K ROM. OTP OR EPROM. 512 TO 2K RAM - ST9 + FAMILY |
| ST901 | HIGH VOLTAGE IGNITION COIL DRIVER NPN POWER DARLINGTON |
| ST901T | HIGH VOLTAGE IGNITION COIL DRIVER NPN POWER DARLINGTON |
| ST9291J7B1 | Microcontroller |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST90R158Q6 | 功能描述:8位微控制器 -MCU ROMless SPI/2xSCI 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 |
| ST90R158T1 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM |
| ST90R158T6 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8/16-BIT MICROCONTROLLER (MCU) WITH 16 TO 64K ROM. OTP OR EPROM. 512 TO 2K RAM - ST9 + FAMILY |
| ST90R26B1 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Microcontroller |
| ST90R26B6 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Microcontroller |
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