參數(shù)資料
型號: ST72774S9T1
廠商: 意法半導(dǎo)體
元件分類: ADC
英文描述: 8-BIT USB MCU FOR MONITORS, WITH UP TO 60K OTP, 1K RAM, ADC, TIMER, SYNC, TMU, PWM/BRM, H/W DDC & I2C
中文描述: 8位USB單片機的顯示器,高達60K章檢察官辦公室,每1000內(nèi)存,模數(shù)轉(zhuǎn)換器,定時器,同步,材質(zhì)單元,脈寬調(diào)制/的BRM,的H / W DDC的
文件頁數(shù): 27/144頁
文件大?。?/td> 1280K
代理商: ST72774S9T1
ST72774/ST727754/ST72734
27/144
4 ON-CHIP PERIPHERALS
4.1 I/O PORTS
4.1.1 Introduction
The I/O ports allow the transfer of data through
digital inputs and outputs, and, for specific pins,
the input of analog signals or the Input/Output of
alternate signals for on-chip peripherals (DDC,
TIMER...).
Each pin can be programmed independently as
digital input or digital output. Each pin can be an
analog input when an analog switch is connected
to the Analog to Digital Converter (ADC).
Figure 15. I/O Pin Typical Circuit
Note:
This is the typical I/O pin configuration. For cost optimization, each port is customized with a specific configuration.
DR
latch
DDR
latch
D
DR SEL
DDR SEL
V
DD
PAD
Analog
Switch (if required)
Analog Enable
(ADC)
Alternate enable
Alternate Enable
Digital Enable
Alternate enable
1
C
Alternate
output
Alternate Input
PULL-UP (if required)
P-BUFFER
(if required)
N-BUFFER
0
1
0
V
SS
5
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