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參數(shù)資料
| 型號： | ST90158 |
| 廠商： | 意法半導體 |
| 英文描述： | 8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM |
| 中文描述： | 微控制器16位產(chǎn)品的家庭多達64K的ROM /檢察官/ EPROM和2K的內(nèi)存 |
| 文件頁數(shù)： | 95/190頁 |
| 文件大?。?/td> | 1152K |
| 代理商： | ST90158 |
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ST90158 - I/O PORTS
8.5 ALTERNATE FUNCTION ARCHITECTURE
Each I/O pin may be connected to three different
types of internal signal:
– Data bus Input/Output
– Alternate Function Input
– Alternate Function Output
8.5.1 Pin Declared as I/O
A pin declared as I/O, is connected to the I/O buff-
er. This pin may be an Input, an Output, or a bidi-
rectional I/O, depending on the value stored in
(PxC2, PxC1 and PxC0).
8.5.2 Pin Declared as an Alternate Input
A single pin may be directly connected to several
Alternate inputs. In this case, the user must select
the required input mode (with the PxC2, PxC1,
PxC0 bits) and enable the selected Alternate
Function in the Control Register of the peripheral.
No specificport configuration is required toenable
an Alternate Function input, since the input buffer
is directly connected to each alternate function
module on the shared pin. As more than one mod-
ule canuse the sameinput, it is up to the user soft-
ware to enable the required moduleas necessary.
Parallel I/Os remain operational even when using
an Alternate Function input. The exception to this
is when an I/O port bit is permanently assigned by
hardware as an A/D bit. In this case , after soft-
ware programmingof the bit inAF-OD-TTL, the Al-
ternate function output is forced to logic level 1.
The analog voltage level on the corresponding pin
is directly input to the A/D.
8.5.3 Pin Declared as an Alternate Function
Output
The user must select the AF OUT configuration
using the PxC2, PxC1, PxC0 bits. Several Alter-
nate Functionoutputs may drive a common pin. In
such case, the Alternate Function output signals
are logically ANDed before driving the common
pin. The user must therefore enable the required
Alternate Function Output by software.
WARNING
: Whena pin isconnected both to an al-
ternate functionoutput and to an alternate function
input, it should be noted that the output signal will
always be present on the alternate function input.
8.6 I/O STATUS AFTER WFI, HALT AND RESET
The status of the I/O ports during the Wait For In-
terrupt, Halt and Reset operational modes is
shown in thefollowing table. The External Memory
Interface ports are shown separately. If only the in-
ternal memory is being used and theports are act-
ing as I/O, the status is thesame as shown for the
other I/O ports.
Mode
Ext. Mem - I/O Ports
P0
High Imped-
ance ornext
address (de-
pending on
the last
memory op-
eration per-
formed on
Port)
High Imped-
ance
I/O Ports
P1, P2, P6
WFI
Next
Address
Not Affected (clock
outputs running)
HALT
Next
Address
Not Affected (clock
outputs stopped)
Bidirectional Weak
Pull-up (High im-
pedance when disa-
bled in hardware).
RESET
Alternate function push-
pull (ROMless device)
9
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| ST90158M9T1 | 8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ST90158-EMU2B | 功能描述:仿真器/模擬器 ST9 Emulator Board RoHS:否 制造商:Blackhawk 產(chǎn)品:System Trace Emulators 工具用于評估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
| ST90158M7 | 制造商:未知廠家 制造商全稱: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 |
| ST90158M7LVT6 | 制造商:未知廠家 制造商全稱: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 |
| ST90158M7Q6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM |
| ST90158M7T6 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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