參數(shù)資料
型號(hào)： ST72215G2B1
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
中文描述： 8位單電壓閃存微控制器。 ADC的。 16位定時(shí)器。的SPI。
文件頁數(shù)： 68/140頁
文件大?。?/td> 1349K
代理商： ST72215G2B1
ST72104G, ST72215G, ST72216G, ST72254G
33/140
I/O PORTS (Cont’d)
CAUTION: The alternate function must not be ac-
tivated as long as the pin is configured as input
with interrupt, in order to avoid generating spurious
interrupts.
Analog alternate function
When the pin is used as an ADC input, the I/O
must be configured as floating input. The analog
multiplexer (controlled by the ADC registers)
switches the analog voltage present on the select-
ed pin to the common analog rail which is connect-
ed to the ADC input.
It is recommended not to change the voltage level
or loading on any port pin while conversion is in
progress. Furthermore it is recommended not to
have clocking pins located close to a selected an-
alog pin.
WARNING: The analog input voltage level must
be within the limits stated in the absolute maxi-
mum ratings.
10.3 I/O PORT IMPLEMENTATION
The hardware implementation on each I/O port de-
pends on the settings in the DDR and OR registers
and specific feature of the I/O port such as ADC In-
put or true open drain.
Switching these I/O ports from one state to anoth-
er should be done in a sequence that prevents un-
wanted side effects. Recommended safe transi-
tions are illustrated in Figure 22 Other transitions
are potentially risky and should be avoided, since
they are likely to present unwanted side-effects
such as spurious interrupt generation.
Figure 22. Interrupt I/O Port State Transitions
The I/O port register configurations are summa-
rized as follows.
Interrupt Ports
PA7, PA5, PA3:0, PB7:0, PC5:0 (with pull-up)
True Open Drain Interrupt Ports
PA6, PA4 (without pull-up)
Table 8. Port Configuration
MODE
DDR
OR
floating input
0
pull-up interrupt input
0
1
open drain output
1
0
push-pull output
1
MODE
DDR
OR
floating input
0
floating interrupt input
0
1
open drain (high sink ports)
1
X
01
floating/pull-up
interrupt
INPUT
00
floating
(reset state)
INPUT
10
open-drain
OUTPUT
11
push-pull
OUTPUT
XX
= DDR, OR
Port
Pin name
Input (DDR = 0)
Output (DDR = 1)
OR = 0
OR = 1
OR = 0
OR = 1
High-Sink
Port A
PA7
floating
pull-up interrupt
open drain
push-pull
Yes
PA6
floating
floating interrupt
true open-drain
PA5
floating
pull-up interrupt
open drain
push-pull
PA4
floating
floating interrupt
true open-drain
PA3:0
floating
pull-up interrupt
open drain
push-pull
Port B
PB7:0
floating
pull-up interrupt
open drain
push-pull
No
Port C
PC7:0
floating
pull-up interrupt
open drain
push-pull
相關(guān)PDF資料
PDF描述
ST72215G2B3 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72E25G2D0 8-BIT MICROCONTROLLER
ST72E251G2D0 8-BIT MICROCONTROLLER
ST72C254G2M7 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72C254G2M6 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72215G2B1/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
ST72215G2B3 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72215G2B3/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
ST72215G2B5 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72215G2B5/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*